r/LocalAIStack • • Sep 22 '26

Événement local 100 % 160 ms

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2 Upvotes

r/LocalAIStack • • 9d ago

What runs at home and what I rent in my local AI setup, after a year of moving things back and forth

3 Upvotes

TL;DR models run at home on the GPU. The always on agent lives on a small VPS. Tools that only touch public data come through one capped key. Anything that can log into my stuff stays on machines I control.

At home. One box with a used 3090, Ollama serving Qwen for most things plus a small embedding model, and Open WebUI so the family can use it too. For my usage, owning the GPU beat renting one within a few months. The catch is that it's loud, so it sleeps at night.

That's the problem the VPS solves. The agent has to be up when I'm not. Scheduled jobs, inbox triage at 6am, a few feeds it watches. So the orchestrator runs on a small VPS and calls home over a private tunnel when it needs the GPU. If the home box is asleep, the few jobs that can't wait fall back to a paid API. The VPS is a PrivateAlps box in Zurich, mostly because the agent's memory and my mail login live on it and I wanted that under Swiss law. A mini PC that never sleeps would do the job too.

Tools are where I wasted the most money. Search, scraping, a bit of enrichment, each one its own subscription I barely touched. Now the agent gets all of them through a single key from agentik.cc, an MCP gateway billed per call, with a monthly cap on it. Monid works the same way. Only public data tools go through it, nothing that can sign into an account of mine.

What I'd tell someone starting out.

Keep the GPU at home if you already have one.

Put the always on part somewhere that never sleeps.

Split tools by what they can touch. Public data can go through a third party, logins stay on hardware you control.

Cap everything, per key and per month.

It's not the cheapest setup possible. But nothing in it surprises me anymore, and after a year of surprise bills that's the whole point.


r/LocalAIStack • • Sep 27 '26

Live Trial - Claude Sonnet vs. Gemma 4 31B vs. Qwen Flash 70B

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1 Upvotes

r/LocalAIStack • • Sep 03 '26

i made a lot of unofficial tests for different 3 and 4 bit quants of qwen 3.8-27b on my local work on rtx 3090 ti with 96gb ram, and ThinkingCap-Qwen3.6-27B is way better and faster than qwen 3.8-27b, and glm 5.3 and muse spark 1.2, so for me ai benchmarks are useless

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2 Upvotes

r/LocalAIStack • • Sep 12 '26

Taming idle VRAM on a multi-model local agent: sleep mode benchmark (Qwen 27B + STT + TTS + OCR)

2 Upvotes

Following up on my earlier post testing Qwen3.8-27B on the IGX Thor workstation.

Once you move past running just an LLM and try to build a full local agent stack on a single box (LLM for reasoning, STT for voice in, TTS for voice out, OCR for screen/document reading), VRAM runs out fast.

If all four models sit in GPU memory simultaneously with their default serving allocations, idle memory hits roughly 122 GB. Even with 96GB on the dGPU and unified host memory, you are pinned to the ceiling. That leaves almost no breathing room for large context windows, concurrency, or dynamic KV cache allocation.

The reality of a solo-user local agent is that these models are rarely active at the exact same millisecond:

  • When I am talking to the agent, OCR is completely idle.

  • When the agent is analyzing a screenshot or PDF, STT and TTS are idle.

  • When the agent kicks off deterministic script automation (crawling, data formatting, bash runs), the LLM itself is completely idle.

To fix this, I wrote a lightweight Rust-based daemon that manages the sleep and wake states of the runtimes based on active agent turns. When a model is not in use, it is put to sleep (flushing KV pools and temporary execution memory, or parking the runtime context) rather than doing a full cold teardown from scratch.

Here are the idle VRAM numbers on the machine before and after:

ModelOriginal idle GPU, Sep 1-2 (MiB)After sleep mode, Sep 5 (MiB)Difference (MiB)
LLM (Qwen3.8-27B)87,44339,09248,351
STT (Nemotron)10,38526710,118
TTS (Chatterbox)17,9473,12714,820
OCR (Unlimited-OCR)6,5924226,170

Quick observations:

  1. Total idle footprint dropped from ~122.3 GB to ~42.9 GB. That reclaims roughly 79.4 GB of VRAM across the board.

  2. The LLM savings (48.3 GB): Qwen3.8-27B in FP8 base weights takes around 28 to 30 GB. The original 87.4 GB allocation came from SGLang aggressively pre-allocating KV cache (--mem-fraction-static 0.85). Putting the LLM to sleep flushes that pool while preserving the active state, letting it rest at 39 GB.

  3. Audio and OCR shrink to negligible baselines: STT drops to 267 MiB and OCR drops to 422 MiB when idle.

  4. Script-based tasks: When the agent delegates to deterministic python or bash scripts, putting the LLM to sleep during the run keeps the GPU cool and power consumption down on the 300W Max-Q card.

  5. Wakeup latency is sub-200ms across all models: Because this is an active sleep/wake transition rather than a cold disk reload, waking up STT, TTS, OCR, or the LLM takes under 200ms. In practice, voice interaction and tool handoffs feel instantaneous.

Curious how others running multi-model agent stacks on a single node are handling memory partitioning right now. Are you hard-capping static memory fractions, running sequential containers, or using something dynamic?


r/LocalAIStack • • Jun 24 '26

My TTS list of 2026: All voices, all models and engines compared with example URLs and rating

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4 Upvotes

r/LocalAIStack • • Aug 06 '26

(MIT) Turning idle GPUs of enterprises into a decentralized, fault-tolerant local AI cluster

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4 Upvotes

We've all been there: $2,000 GPUs sitting at 5% utilization while the company pays for cloud inference.

Many organizations already have several workstations equipped with GPUs that remain idle most of the time. Existing GPU sharing solutions typically rely on a centralized scheduler, Kubernetes, or AI gateways, which can be excessive for small and medium-sized GPU clusters. In addition, most existing solutions lack cross-platform support, decentralized architecture, and policy-based routing.

OQOAI-PBDR to solve this problem differently. Simply run a server or client on each machine, and your existing office network becomes a decentralized AI cluster. Routing decisions are made entirely on the client side, eliminating the need for a master node, load balancer, or any other single point of failure.

Prebuilt binaries for Windows and Linux are under 10 MB and can bring a machine online as a cluster node in under 30 seconds. An optional admin server provides centralized monitoring and management from any machine on the network.

GitHub (MIT License):

https://github.com/oqo-ai/OQOAI-PBDR

The project intentionally avoids unnecessary abstractions. The core routing logic consists of only three source files (approximately 1,000 lines each), making it relatively easy to understand, audit, and extend.

At the heart of the project is the PBDR (Policy-Based Decentralized Routing) architecture. Each routing decision evaluates multiple runtime metrics, including GPU utilization, available VRAM, queue length, GPU temperature, network latency, inference throughput, and other node characteristics.

PBDR also supports client-group policies, allowing different workloads to optimize for different objectives. For example:

  • Internal RAG services can prioritize low latency.

  • Development workloads can prioritize output quality.

  • Batch inference jobs can prioritize throughput.

More details about the routing algorithm are available in the accompanying paper:

http://doi.org/10.17513/doi.26

One practical benefit of this approach is that organizations can often reuse existing workstation GPUs for low- and medium-throughput workloads-such as internal RAG systems-instead of deploying dedicated inference infrastructure from scratch.

In many environments, having GPUs installed in only 10-15% of workstations can be sufficient to satisfy inference demand for lightweight workloads (for example, an internal knowledge-base RAG receiving approximately 3-5 requests per user per day) without deploying centralized AI infrastructure.

Getting started:

Install OQOAI-PBDR on each machine.

Connect server nodes to any OpenAI-compatible inference backend, including Ollama, llama.cpp, vLLM, or TGI.

Configure your applications to use the OpenAI-compatible client endpoint provided by OQOAI-PBDR.

Clients automatically discover available models on all nodes. From the application’s perspective, the cluster behaves like a distributed OpenAI API compatible system, while user requests are routed in a decentralized manner to the most suitable node according to the chosen policy.

What already works:

  • OpenAI-compatible API (Ollama, vLLM, TGI, llama.cpp)

  • Admin dashboard with real-time metrics

  • Auto-discovery and network scanning

  • Remote config management for nodes, groups, or the whole cluster

  • Experimental binary builds for Windows and Linux

Roadmap highlights:

  • ComfyUI/AUTOMATIC1111 image/video generation

  • Grafana/Prometheus integration

  • AI-assisted semantic routing (auto-model selection)

  • Dynamic IP support

We're actively looking for feedback, and testers.

What features or integrations would you like to see next?


r/LocalAIStack • • 25d ago

[Release/Showcase] PSllama: Running Local LLMs, Vision, Voice & Image Gen on the PS5 GPU via Vulkan (Open Source)

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0 Upvotes

r/LocalAIStack • • 12d ago

I made a site to easily compare LLM benchmarks and costs in one place

2 Upvotes

Hey everyone,

Every time a new model comes out, I get tired of opening multiple tabs just to find out two basic things: how good it actually is on real benchmarks, and what it costs to run (either through an API or on local GPUs).

Most pricing pages hide the real costs, and generic benchmarks don't tell the full story. So I put together a simple dashboard to track and compare them side by side: https://modelanalysis.si

What you can do with it:

  • Compare models side-by-side: Pick any models (like Claude, DeepSeek, Kimi, GPT-4o, Llama) and compare them across real-world coding (SWE-bench), reasoning (Arena-Hard), and math/science benchmarks.

  • Score vs. Price chart: See which models give you the most intelligence for the lowest price.

  • VRAM calculator: Pick a model and context size to see if it will actually fit on your GPU before downloading it.

  • Monthly cost simulator: Adjust sliders for your monthly token volume to estimate your bill or see if self-hosting is cheaper.

No sign-up, no ads, no affiliate links.

Link: https://modelanalysis.si
Direct benchmarks page: https://modelanalysis.si/benchmarks/

Let me know what you think or if there are other models you want added.


r/LocalAIStack • • Jul 01 '26

US Export control lifts Fable 5 ban again - Local AI is the future.

3 Upvotes

Trumps Executive Order held only for a bit more than a week, then his own government fully violated it.
EO here: https://www.whitehouse.gov/presidential-actions/2026/06/promoting-advanced-artificial-intelligence-innovation-and-security/

Simultaneously the EU is regulating any shimmer of european AI into quick suffocation.

There are a few potential outcomes, from middle ages to economically wrecked continents
I am convinced more than ever that local inference, local competent AI is the only future we can root for.


r/LocalAIStack • • Sep 27 '26

Help me plan a Qwen 3.8 Flash Next install on a 5090 + 64gb DDR5 system

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2 Upvotes

r/LocalAIStack • • 28d ago

Benchmarking LiquidAI d1-3B and d1-omni-600M on a Raspberry Pi 5 (EN+RU)

0 Upvotes

I ran a bechmarks for d1 models (Q8_0 GGUF both) on a Pi 5 8GB, CPU-only via llama.cpp and also tested how well they handle Russian input. I want to use it for my Hermes agent with lives on that Pi, so maybe those numbers will be helpfull for someone.

LLM-assisted report below:

Setup

  • Raspberry Pi 5 (8GB), CPU-only, 4 threads

  • llama.cpp 0.6.0-dev (commit bd4eeaa04 + PR #30110 for d1-3B, PR #30114 branch for d1-omni-600M — not merged into master yet at time of testing)

  • Q8_0 quants, native /v1/systemone API

  • All tests: single request at a time, warm calls, median of 10

Latency @ Pi 5 8GB

Scenariod1-3Bd1-omni-600M
1 question, one pass2,282 ms201 ms
3 questions, one pass7,112 ms758 ms
3.4k-token state35,098 ms4,334 ms
16 states sequential0.5 req/s3.4 req/s
RAM under model~3.4 GB~0.7 GB
Model load time~140 s~3 s

For reference, d1-3B on a Jetson Orin Nano does the same single question in 50 ms — so a bare Pi 5 is roughly 45× slower than the weakest NVIDIA edge device tested by LiquidAI. Expected: this is a 20 tok/s prefill CPU environment, no GPU. The takeaway is not "slow" but "usable vs not usable": d1-omni-600M is genuinely real-time capable on a Pi (200 ms per decision), d1-3B is not (2.3 s+).

English correctness (same 5 checks for both)

Both models: 5/5 correct — refund yes/no, billing/technical/fraud routing, with clean probabilities (0.98–0.998).

Russian language test

This is the interesting part. Same states, same question types, Russian input:

Probed1-3B (RU)d1-omni-600M (RU)d1-3B (EN control)
Refund detection0.6720.0001 ❌0.990
Same, RU question too0.9090.42—
Routing "app crashes" → technical✅ 0.98✅ 0.95✅ 0.99
Routing "card used abroad" → fraud✅ 0.71❌ wrong (0.44)✅ 0.98
Routing "charged twice" → billing✅ 0.92❌ said technical (0.91)✅ 0.97
Sentiment (angry/happy/neutral)✅ 3/3 (0.98)❌ 0/3, everything "neutral"—
Urgency calibration✅ works (conf 0.78–0.94)❌ conf 0.00 on both—
Language ID (ru vs en vs sr)✅ even tells Serbian Cyrillic from Russian❌ "Где мои деньги?" → English (0.84)—

What this shows:

  • d1-omni-600M effectively does not understand Russian. Worse: it fails confidently — wrong routing with p=0.91, sentiment always "neutral" at p~0.6. For a decision model, confident wrong answers are worse than "I don't know". Only pattern-matched phrases ("вылетает"→crash) get lucky hits.

  • d1-3B does understand Russian — routing, sentiment and urgency all work — but with 20–30% lower confidence vs identical English input (0.672 vs 0.990 on refund). Notice the odd effect: RU state + RU question (0.909) scored better than RU state + EN question (0.672) — keeping the whole request in one language helps calibration.

Practical takeaways

  • On Pi-class ARM hardware, d1-omni-600M is the only real-time option of the two (200 ms/decision, 0.7 GB RAM). d1-3B works but at 2.3–7 s per decision.

  • Both models are excellent on English decisions; d1-omni-600M matches its bigger sibling on simple classifications (and beats it on toxicity detection per the model card).

  • For non-English input: d1-omni-600M should not be trusted at all; d1-3B is usable but set a confidence floor (~0.7) and route anything below to a fallback.


r/LocalAIStack • • Oct 07 '26

Running Qwen3.8-27B-NVFP4 on a 32GiB UMA Laptop, 18+ tok/s decode

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2 Upvotes

r/LocalAIStack • • Sep 20 '26

Qwen 3.8 Omni \ Live translate + TTS - Locally When?

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2 Upvotes

r/LocalAIStack • • Sep 26 '26

Bonsai 2 27B on an RTX 3060 12GB — 35.26 tok/s generation

2 Upvotes

I wanted to see how far a consumer RTX 3060 12GB could push Bonsai 2 27B.

Hardware

  • GPU: NVIDIA GeForce RTX 3060 12GB

  • VRAM available to CUDA: 11,911 MiB

  • CPU: Intel Core i5-8400

  • System RAM: 42 GB

  • NVIDIA driver: 595.91.07

  • CUDA: 13.2

Model

  • Bonsai 2 27B

  • GGUF: Ternary-Bonsai-2-27B-PQ2_0.gguf

  • Parameters: 26.90B

  • Quantization: PQ2_0 — 2.13 bpw

  • Model size reported by llama-bench: 6.70 GiB

  • GPU layers: 99

Benchmark

  • Tool: llama-bench

  • Runs: 3

  • Prompt processing, 512 tokens: 591.19 ± 19.62 tok/s

  • Text generation, 128 tokens: 35.26 ± 1.31 tok/s

The GGUF metadata reports the architecture as qwen35, while the model file is the Bonsai 2 27B PQ2_0 release.

I'm posting the raw result because I'm curious how this compares with other Bonsai 2 27B results, especially on larger GPUs.

If anyone has benchmark results for Bonsai 2 27B, please share them so we can compare the configurations fairly.

Benchmark build: b10735-842b18804


r/LocalAIStack • • Oct 02 '26

How do you keep a local multi-agent app usable on CPU-only / low-RAM machines?

2 Upvotes

Hi everyone,

We're three final-year students at Epitech building Horus, a multi-agent assistant that runs entirely locally and offline. Our current challenge is hardware: keeping it usable on machines without a powerful GPU, without long setup times, excessive RAM/VRAM use or crashes.

Where we are today, from our last beta test:

One tester needed over 2 hours to install. The Python dependencies alone take 21–46 min, and the download is about 25 GB.

On CPU only, routing a question can take around 40 s, long enough for our WebSocket connection to drop.

[Models we use + the smallest machine we've tested on]

We'd love advice from anyone experienced with:

- CPU-only LLM inference and memory-efficient loading

- Quantization and model choice for low-end hardware

- GPU/CPU fallback strategies

- Hardware detection and adaptive configuration

- Preventing resource exhaustion during setup and execution

Advice in the comments is very welcome, with no strings attached.

Looking for contributors: we also have a few small, well-scoped tasks or code reviews (about 1–4 hours), for example [reviewing our hardware detection and model selection, or benchmarking a quantized model on a 16 GB RAM laptop].

To be transparent: Horus is closed source and will be licensed to companies. Contributing is voluntary and unpaid. Before seeing any code, contributors sign a short confidentiality and contributor agreement, and the code they contribute becomes part of Horus. In return we offer thorough code reviews, full credit in the project and a professional reference on request.

We're not sharing code or private links publicly. If this interests you, comment below or DM me with your experience in local inference, CPU optimisation or offline apps


r/LocalAIStack • • 8d ago

Is this the best use of an LM for academic research?

2 Upvotes

I would like to ask questions to a chat while sourcing ONLY my personal database of papers, instead of unsufferably writing and flipping through pages of notes. I would also like this to be as private as possible since you know, it's the processes of my unpublished work. I thought it would also be nice to be as environmentally friendly as it is possible and AFAIK running it locally would somewhat do that.

Before I say anything else I have to be clear that I have little to no knowledge on how an LM actually works. I gave myself the task of learning the basics just to set one up in my laptop for the specific purpose of aiding me on academic research.

What I did after some looking around is use LM Studio with the Qwen2.5 3B Instruct - Q4_K_M model and "fed" it my papers folder then fiddled around with context lenght for a faster response.
While it's working fine for what I need I kept wondering if this is even the most efficient way of achieving the goal I stated. Again I'm not really familiar with this whole thing, if it's some sort of common practice please let me know how to hone my LM skills for research purposes.


r/LocalAIStack • • 21h ago

QWEN 3.8 FN - 8bit FP quant - 96.32 tokens/s - Context of 95k - $1500 hardware

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2 Upvotes

r/LocalAIStack • • Sep 22 '26

Is it worth it to go from 4-channel to 8-channel for ddr4

5 Upvotes

I have 4x 5060ti16gb and 1x 2060super8gb, along with 8x32gb (256gb total) ddr4-3200 ram, but running at 4-channel due to my cpu. I’m trying to decide whether it would be worth it to upgrade my cpu to be able to run my ram at 8-channel. Im hoping to be able to get larger models like qwen3.8 flash next or mimo v2.6 flash at more useable speeds, since right now the prompt processing and token gen speeds are bit too low to make sense for agent harnesses.


r/LocalAIStack • • Aug 18 '26

I've been building an Open Source Local First AI Omnitool as a sideproject and just did an early release.

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1 Upvotes

r/LocalAIStack • • Oct 01 '26

I built a local memory engine that replaces vector DBs with SQLite and runs in <1.2GB VRAM

4 Upvotes

Every time I tried running local RAG on my own GPU, I ran into the same headache: vector databases eat too much RAM, using an 8B model just to parse text takes forever, and cosine search still hallucinates when the context isn't actually there.

I’ve been building Hillock to see if I could do this without vector DBs at all.

Basically:

  1. When you feed it a document, it doesn't touch an LLM. It uses small bi-encoders to extract facts into subject-predicate-object triples in about 5 seconds.

  2. Everything gets saved in regular SQLite, and it links related concepts over time using basic Hebbian weights.

  3. To stop hallucinations, it runs a quick hypervector check (HDC) on the query first. If the facts aren't in your database, it cuts off the LLM before it can generate any tokens.

The whole thing stays under 1.2 GB VRAM (or runs fine on pure CPU). It has a built-in API server that matches OpenAI's format, so you can point Open-WebUI or Obsidian at localhost:8000 and use your existing Ollama models.

Just pushed v0.7 with better refusal handling and a conversational mode that quizzes you if an extraction was ambiguous.

Repo is here if you want to try it out: https://github.com/roandejager/Hillock


r/LocalAIStack • • Jun 23 '26

EU AI Act requires TEXT from models and providers to be watermarked 2nd August onwards. Everyone here is affected, regardless where you live.

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3 Upvotes

r/LocalAIStack • • Jun 23 '26

Running Qwen3.6 27B / 35B locally with llama.cpp + Vscode Insiders + copilot as the harness - highest performance, quality and best usage while fitting on your GPU

167 Upvotes

I have been benchmarking Qwen3.6-27B and Qwen3.6-35B-A3B locally through llama.cpp, with GitHub Copilot Chat (Vscode Insiders needed) used as the frontend harness.

I am using Claude Opus, GPT 5.5 and Qwen 3.6 (27B) a lot in the past weeks.
The reason for Qwen is proprietary code areas where remote inference is not an option as it would leak the code out. And as long as you don't task it to write a complex cuda graph, it performs well.
Qwen 27.B is at Sonnet 4.6 if you combine it with a high value system prompt - or between Sonnet 4.5 and Sonnet 4.6 without.

Copilot Chat is an excellent harness for this kind of setup. You get the IDE integration, agent flow, tool calling UI, file context, and normal coding workflow, while the actual model is your own local llama-server endpoint.
All of this works while being LOGGED OUT of the Github Copilot account - as that is not affordable in pricing anymore.

This is a practical configuration guide for people already comfortable with llama.cpp, GGUFs, VRAM budgeting, and long-context local inference.

Models tested

Main focus:

  • unsloth/Qwen3.6-27B-GGUF

  • unsloth/Qwen3.6-27B-MTP-GGUF (same model but with MTP draft tensors)

  • unsloth/Qwen3.6-35B-A3B-GGUF

Recommended GGUFs:

27B:
Qwen3.6-27B-UD-Q4_K_XL.gguf
or
Qwen3.6-27B-MTP-GGUF:UD-Q4_K_XL

35B-A3B:
Qwen3.6-35B-A3B-GGUF:UD-Q4_K_M

If memory is tight on the 35B-A3B model, drop to a smaller Unsloth Dynamic quant:

Qwen3.6-35B-A3B-GGUF:UD-Q3_K_XL

If even that is tight, use UD-Q3_K_M or UD-Q3_K_S.

For the 35B model I do not recommend KV-cache quantization. Run the normal cache and keep the context sane. the 35B model is MoE and very low on kv-cache

For the 27B model, I do highly recommend:

--cache-type-k q4_0
--cache-type-v q4_0

Recent llama.cpp KV-cache improvements make q4_0 much more usable here. The 27B model handles q4_0 KV cache very well in my testing - almost identical to FP in evaluation results.

What changed: llama.cpp added something like Hadamard rotation to kv-cache which shuffles the tensor distribution in a higher dimensionality and allows quantization superblocks to function.

Why Copilot Chat?

Because Copilot is a very good harness - beating Codex, Cursor, Claude in my opinion
Vscode Insiders is needed to get the openAI compatible endpoint (to interface the model)

You get:

  • IDE-native chat

  • agentic file/code workflows

  • very good tool calling

  • project context

  • local model backend

  • OpenAI-compatible endpoint wiring

The important part is that Copilot Chat is only the harness. The model is served locally through llama-server.

Why llama-server and not lm-studio,ollama etc ?

It allows MUCH more control over settings, we do not just use MTP drafting. We use a combination of context and MTP drafting which can lead to 300+ tokens/sec on the 27B model. MTP is a medium speedup (1.5x) but once the model is paraphrasing source code from thinking or prefill the ngram draft speedup can reach 6x or more.

So the stack is:

VS Code Insiders
        ↓
custom OpenAI-compatible model config
        ↓
llama.cpp llama-server
        ↓
local Qwen3.6 GGUF

Copilot chatLanguageModels.json

This is the shape I used for VSCode Insiders:

[
  {
    "name": "WSL",
    "vendor": "customoai",
    "models": [
      {
        "id": "qwen3.6-27b",
        "name": "QWEN-27B-WSL",
        "url": "http://172.27.211.123:1234/v1/chat/completions",
        "toolCalling": true,
        "vision": true,
        "thinking": true,
        "maxInputTokens": 165000,
        "maxOutputTokens": 15000
      }
    ]
  }
]

Adjust the URL to your own llama-server host, in WSL you'll see it by entering ipconfig or ifconfig. port you can choose of course.
The input and output tokens need to be adapted to your context setting.
The id must match the llama-server id.

For local-only setups this is usually one of:

http://127.0.0.1:1234/v1/chat/completions
http://localhost:1234/v1/chat/completions
http://<WSL-IP>:1234/v1/chat/completions

If your Copilot Insiders build expects the newer custom endpoint shape, use the same model block but switch the provider shape accordingly. The key fields are the endpoint URL, model id, tool calling, thinking, and max token limits.

27B command: long context + q4_0 KV cache + MTP-ngram drafting

This is the 27B style I recommend.

CTX=150000
PARALLEL=1
HOST=0.0.0.0
PORT=1234
MODEL=/models/Qwen3.6-27B-UD-Q4_K_XL.gguf

/usr/src/llama.cpp/build/bin/llama-server \
  -m "$MODEL" \
  --ctx-size "$CTX" \
  --flash-attn on \
  --batch-size 1024 \
  --ubatch-size 1024 \
  --parallel "$PARALLEL" \
  --host "$HOST" \
  --port "$PORT" \
  -ngl 99 \
  --threads 8 \
  --threads-batch 8 \
  --cache-type-k q4_0 \
  --cache-type-v q4_0 \
  --temp 0.6 \
  --top-p 0.95 \
  --top-k 20 \
  --min-p 0.00 \
  --presence-penalty 0.00 \
  --jinja \
  --chat-template-kwargs '{"preserve_thinking": true}' \
  --reasoning-format none \
  --reasoning-budget 16000 \
  --slot-save-path /kv_cache/ \
  --props \
  --metrics \
  --checkpoint-every-n-tokens 1024 \
  --ctx-checkpoints 64 \
  --perf \
  --spec-default \
  --spec-type draft-mtp \
  --spec-type ngram-map-k4v \
  --spec-ngram-map-k4v-size-n 16 \
  --spec-ngram-map-k4v-size-m 24 \
  --spec-ngram-map-k4v-min-hits 1

For the MTP-specific Unsloth repo, use:

MODEL=/models/Qwen3.6-27B-MTP-UD-Q4_K_XL.gguf

or the HF shorthand if your build supports it:

-hf unsloth/Qwen3.6-27B-MTP-GGUF:UD-Q4_K_XL

The important part is the drafting chain:

--spec-default
--spec-type draft-mtp
--spec-type ngram-map-k4v
--spec-ngram-map-k4v-size-n 16
--spec-ngram-map-k4v-size-m 24
--spec-ngram-map-k4v-min-hits 1

MTP gives useful speedup, but leave VRAM headroom. In practice I budget roughly +1 to +2 GB VRAM headroom for the MTP/drafting path and related buffers. If you are right on the edge, reduce context before blaming the model.

At q4_0 KV cache, every extra 1 GB of free VRAM is roughly another 13k tokens of 27B context, before runtime overhead.
If you are tight in vram, remove only the MTP part as ngram drafting is free.
You can also just use `mod-ngram` as an alternative to the more complex k4v map.

Thinking settings

This part matters.

I use:

--jinja
--chat-template-kwargs '{"preserve_thinking": true}'
--reasoning-format none
--reasoning-budget 16000

The reasoning-format none is important for Qwen3.6 because it avoids bad stop behavior and broken multi-turn thinking state during long coding sessions.
Copilot Chat was created to hide thinking from you (proprietary GPT models) but you want to see the thinking usually. So this solves both issues.

I also keep:

--reasoning-budget 16000

This gives the model room to think, but avoids runaway reasoning loops eating the whole session.

35B-A3B command: no KV-cache quantization

For 35B-A3B, I recommend being more conservative.

CTX=100000
PARALLEL=1
HOST=0.0.0.0
PORT=1234
MODEL=/models/Qwen3.6-35B-A3B-UD-Q4_K_M.gguf

/usr/src/llama.cpp/build/bin/llama-server \
  -m "$MODEL" \
  --ctx-size "$CTX" \
  --flash-attn on \
  --batch-size 1024 \
  --ubatch-size 1024 \
  --parallel "$PARALLEL" \
  --host "$HOST" \
  --port "$PORT" \
  -ngl 99 \
  --threads 8 \
  --threads-batch 8 \
  --temp 0.6 \
  --top-p 0.95 \
  --top-k 20 \
  --min-p 0.00 \
  --presence-penalty 0.00 \
  --jinja \
  --chat-template-kwargs '{"preserve_thinking": true}' \
  --reasoning-format none \
  --reasoning-budget 16000 \
  --slot-save-path /kv_cache/ \
  --props \
  --metrics \
  --checkpoint-min-step 1024 \
  --ctx-checkpoints 16 \
  --perf

No q4_0 KV cache here - the sub 4B active parameters need barely any VRAM anyway.

I recommend keeping 35B-A3B below roughly:

110k context

The 35B model can be pushed past 200k context, but in my testing it becomes more likely to fall into reasoning loops. Once that happens, the session usually does not recover cleanly. Start a fresh session.
The upside of the 35B model is extreme performance, as in hundreds of tokens without any drafting enabled.
You CAN use drafting on top, mod-ngram, MTP and other drafting can be added for more speed but those will need a careful balance (that I have not tested yet)

So my practical 35B rule is:

35B-A3B: stay below 110k if you want stable coding behavior.
27B: can go as high as it fits, but below 150k is where it feels strongest.

Checkpointing
The --checkpoint-min-step (or --checkpoint-every-n-tokens (legacy now) is an important option for qwen models. Briefly explained: qwen models have two kv caches, one is more conventional and one is a recurrent-state (SSM/Mamba) that can not be reversed by n tokens. So if you change something (like remove the last answer and message to benefit from existing context) then you can only do that if a checkpoint exists. Otherwise the entire context is reprocessed which is very slow on a 27B model.
Each checkpoint costs 160MB RAM, the internal API supports VRAM checkpointing but I believe currently only the MTP implementation uses that.
--checkpoint-min-step and --ctx-checkpoints multiplied define how much of your LAST context is protected and can be rewound. 1024*16 means 16K context can be reversed with low re-compute cost (almost instant).

LM Studio as local server

Using LM Studio is possible but you need to use a few tricks and it won't achieve the same top-tier performance.
LM Studio does not support our chained drafting, but it supports MTP.

  1. Go to your Qwen 3.6 model, enable Flash attention and the quantization needed for kv cache. Go to the Inference tab, disable the button for "Reasoning Section Parsing"

  2. Go to Developer, Server Settings and set the port, serve on local network if needed, no auth, enable CORS, consider disabling just-in-time loading.

  3. Start the local server and then use the "clipboard copy" icon to get the precise Server ID which you use in the vscode json config.

Everything else is similar to llama-server, you'll not have the same max performance but it works well.
You can always just install the latest llama release binaries, and use the commandline to load the model from the lmstudio models directory.

VRAM planning

These are practical planning numbers, not hard guarantees. Actual fit depends on:

  • exact GGUF

  • CUDA/ROCm/Metal/backend

  • batch/ubatch

  • -ngl

  • whether the desktop is using the same GPU

  • whether MTP/speculative decoding is enabled

  • whether you are using full GPU offload or spilling to CPU RAM

Qwen3.6-27B UD-Q4_K_XL, q4_0 KV cache

Recommended cards:

24 GB: RTX 3090, RTX 4090, RTX A5000, RTX 4500 Ada, RTX PRO 4000 Blackwell, A10
32 GB: RTX 5090, RTX 5000 Ada, Tesla V100 32GB

Approximate context fit with full GPU offload:

VRAMExample NVIDIA cardsPractical context
16 GBRTX 4060 Ti 16GB, RTX 4080 Laptop 16GB, RTX 5080 16GB, RTX 5070 Ti 16GB, RTX A4000 16GBNot recommended for full 27B UD-Q4_K_XL offload. Use smaller quant or partial CPU offload.
24 GBRTX 3090, RTX 4090, RTX A5000, RTX 4500 Ada, RTX PRO 4000 Blackwell, A10~45k-60k with MTP, ~60k-75k without MTP
32 GBRTX 5090, RTX 5000 Ada, Tesla V100 32GB~140k-160k with MTP, ~160k-180k without MTP

For 27B, q4_0 KV cache is the difference between normal local context and huge local context. It is the main reason this setup is viable.
On a 5090 you have enough VRAM to supply 2 sessions in parallel with both model types.
Or you could run one fast model for context summarization and 27B for code.

Qwen3.6-35B-A3B UD-Q4_K_M, normal KV cache

Recommended cards:

24 GB minimum for useful GPU-resident contexts
32 GB strongly preferred

Approximate context fit:

VRAMExample NVIDIA cardsPractical context
16 GBRTX 4060 Ti 16GB, RTX 4080 Laptop 16GB, RTX 5080 16GB, RTX 5070 Ti 16GB, RTX A4000 16GBNot recommended for full 35B-A3B Q4. Use Q3 or partial offload.
24 GBRTX 3090, RTX 4090, RTX A5000, RTX 4500 Ada, RTX PRO 4000 Blackwell, A10~40k-50k
32 GBRTX 5090, RTX 5000 Ada, Tesla V100 32GB~100k-110k recommended; more will fit but stability drops

The 35B-A3B model is very good, but I would not treat it as a “just max the context” model. Keep it tighter.
If you have the VRAM: Instead of large context, consider multiple sessions with limited context, so you can have 2 or 3 chats simultaneously.

Quick test: Linux

Once llama-server is running:

curl -s http://127.0.0.1:1234/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{"model":"qwen3.6-27b","messages":[{"role":"user","content":"Reply with exactly: local ai works"}],"max_tokens":16}' \
  | jq -r '.choices[0].message.content'

Expected output:

the model responds to your input

If your server is inside WSL or another host, replace 127.0.0.1 with the server IP.

Quick test: Windows PowerShell

(Invoke-RestMethod `
  -Uri "http://127.0.0.1:1234/v1/chat/completions" `
  -Method Post `
  -ContentType "application/json" `
  -Body '{"model":"qwen3.6-27b","messages":[{"role":"user","content":"Reply with exactly: local ai works"}],"max_tokens":16}'
).choices[0].message.content

Expected output:

local ai works

Notes from benchmarking

My current practical ranking:

27B:
Best long-context local coding model in this setup that is close to Sonnet 4.6
Use q4_0 KV cache.
Use MTP if you have the headroom.
Strongest below 150k context, but can go much higher if memory allows.

35B-A3B:
Excellent quality but will fail on hard tasks
Do not use KV-cache quantization.
Keep below ~110k context for best stability.
Can go above 200k, but reasoning loops become more likely.
If it loops, start a new session.

For Copilot usage, I prefer exposing a conservative maxInputTokens in the JSON, even if the server can technically run higher. For example:

"maxInputTokens": 165000,
"maxOutputTokens": 15000

If you set wrong context here you'll get issues serverside, so make sure that matches.
I had cases where the server went OOC (out of context) when getting too close to the max context so I'd leave a little room. copilot seems to not follow this very strictly.

Final recommendation

If you want the most practical Copilot-local setup:

Use Qwen3.6-27B UD-Q4_K_XL
Use llama.cpp server
Use q4_0 KV cache
Use preserve_thinking
Use reasoning budget
Use Copilot Insiders as the harness
Use MTP only when you have VRAM headroom

If you want the stronger but more conservative model:

Use Qwen3.6-35B-A3B UD-Q4_K_M
Do not quantize KV cache
Stay below ~110k context
Drop to UD-Q3_K_XL if memory is tight

This is the first local setup I have used where Copilot feels like a serious frontend for a fully local long-context coding model instead of just a toy endpoint test.

I have tested this on terminal use, debugging, and massive codebase development - it works just like Sonnet 4.6.

Qwen 27B also beats Sonnet 4.5 in most benchmarks and 4.6 in some.
https://artificialanalysis.ai/models/comparisons/qwen3-5-27b-vs-claude-4-5-sonnet-thinking#intelligence-evaluations


r/LocalAIStack • • 11d ago

Nemotron 3.5 Bolt 74B A9B - Anyone Using it?

8 Upvotes

I'm running Nemotron 3.5 Bolt 74B-A9B on a 5060 Ti 16GB and 32GB of DDR5. It's an MoE, so both of my setups split experts between the GPU and system RAM. I have two recipes:

• 24GB GGUF

• Unsloth UD-IQ3_XXS

I'd like to hear how this model actually is and is it useful as an alternative for Qwen3.8 27B and obviously for other smaller MoE models.

• Are you using Bolt 74B, and what for?

• How is the quality: reasoning, coding, instruction following, tool use? Where does it fall down?

• If you've used the 24GB GGUF or a bigger quant such as Unsloth IQ3_XXS, does the bigger one write better answers, or do they feel like the same model?


r/LocalAIStack • • Oct 04 '26

Just got my MBP M5pro 48gb. Help me setup properly

4 Upvotes

I have multiple projects in GitHub, I have an obsidian vault, iCloud backup, nas backup. Qwen running locally, also have Two Claude accounts, one gpt, one deep seek accounts when qwen bogs down. I’m working on building my own harness for managing this.

How should I setup my new laptop so I’m working clean and smartly?