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๐Ÿฆ™#quantization#low-vram#web-devFreshcollected in 6h

Qwen3 Coder Next Runs 23 t/s on 8GB VRAM

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๐Ÿฆ™Read original on Reddit r/LocalLLaMA

๐Ÿ’กCode gen model hits 23 t/s on 8GB VRAM w/131k ctx - ditch paid subs for local dev

โšก 30-Second TL;DR

What changed

23 tokens/second sustained on RTX 3060 12GB with 131,072 context

Why it matters

Enables high-quality coding AI on consumer hardware, cutting costs for indie devs. Boosts local LLM adoption for production workflows. Highlights efficient quantization for memory-constrained setups.

What to do next

Download qwen3-coder-next-mxfp4.gguf and run the provided llama-server command on 8GB+ VRAM.

Who should care:Developers & AI Engineers

๐Ÿง  Deep Insight

Web-grounded analysis with 5 cited sources.

๐Ÿ”‘ Key Takeaways

  • โ€ขQwen3-Coder-Next achieves Claude Sonnet 4.5-level coding performance with only 3B activated parameters using sparse MoE architecture, making local deployment on consumer hardware economically viable[1][4]
  • โ€ขThe model sustains 20-40 tokens/second on consumer hardware with MXFP4 quantization, with reported instances of 23 t/s on RTX 3060 12GB configurations managing 131k context windows[1]
  • โ€ขQwen3-Coder-Next scores 42.8% on SWE-Bench Verified and 44.3% on SWE-Bench Pro, approaching Claude Sonnet 4.5's 45.2% and 46.1% respectively while requiring significantly less compute[1][3]
๐Ÿ“Š Competitor Analysisโ–ธ Show
AspectQwen3-Coder-Next (Local)Claude Sonnet 4.5Qwen3.5GPT-5.3 Codex
Speed20-40 tok/s50-80 tok/s19x faster than Qwen3-MaxNot specified
SWE-Bench Verified42.8%45.2%Not specifiedNot specified
Context Window256k200k256kNot specified
Cost$0 after hardware$100/month+API pricingNot specified
Offline Useโœ… YesโŒ NoโŒ NoโŒ No
Terminal Coding (Terminal-Bench 2.0)Not specifiedNot specified52.577.3
Architecture80B total, 3B activated (MoE)Proprietary397B-A17BNot specified

๐Ÿ› ๏ธ Technical Deep Dive

โ€ข Model Architecture: Sparse Mixture-of-Experts (MoE) design with 80B total parameters but only 3B activated per token, enabling efficient inference comparable to 10-20x higher active compute models[4] โ€ข Quantization Support: MXFP4 quantization reduces memory footprint by 50% compared to FP16, with GGML_CUDA_GRAPH_OPT=1 optimization enabling sustained 23 t/s on RTX 3060 12GB[1] โ€ข Context Handling: Native 256k context window with demonstrated capability to manage 64k-128k windows on consumer hardware; successfully processes long-horizon coding tasks and complex tool usage[1][4] โ€ข Inference Framework: Compatible with llama-server using CUDA acceleration (-ngl 999 for full GPU offload) and supports reliable JSON function calling for agentic workflows[1] โ€ข Training Focus: Optimized specifically for coding agents with strong performance on multilingual settings; operates exclusively in non-thinking mode without <think> blocks for simplified production integration[3][4] โ€ข Memory Requirements: Effective 8GB VRAM usage on RTX 3060 with 64GB system RAM minimum for optimal performance with large context windows[1]

๐Ÿ”ฎ Future ImplicationsAI analysis grounded in cited sources

The emergence of efficient local coding models like Qwen3-Coder-Next represents a significant shift toward decentralized AI development infrastructure. By delivering near-enterprise-grade coding performance on consumer hardware at zero recurring cost, this model class threatens the SaaS subscription model for coding assistants while enabling organizations to maintain complete data privacy and offline capability. The 19x speed improvement of Qwen3.5 over its predecessor and competitive performance on agentic benchmarks suggest rapid convergence toward local-first AI workflows. This trend may accelerate adoption of open-weight models in enterprise environments, reduce dependency on cloud-based AI APIs, and create new market opportunities for edge AI infrastructure and optimization tooling. The ability to run sophisticated coding agents locally could democratize advanced development capabilities while raising questions about model licensing, fine-tuning rights, and the long-term viability of cloud-dependent AI services.

โณ Timeline

2025-12
Qwen3-Coder-Next released as open-weight model with sparse MoE architecture optimized for local agentic coding
2026-01
Community reports successful MXFP4 quantization implementations achieving 20-40 tokens/second on consumer GPUs
2026-02
Qwen3.5 series announced with 19x speed improvement over Qwen3-Max and competitive performance on Terminal-Bench 2.0 (52.5 score)

๐Ÿ“Ž Sources (5)

Factual claims are grounded in the sources below. Forward-looking analysis is AI-generated interpretation.

  1. dev.to
  2. datacamp.com
  3. qwen.ai
  4. openrouter.ai
  5. qwen.ai

User reports running Qwen3 Coder Next in MXFP4 on RTX 3060 12GB (8GB VRAM effective) with 131k context at sustained 23 tokens/second. Configuration shared for web dev tasks, replacing paid Claude. Requires 64GB RAM; ideal for SaaS coding delegation.

Key Points

  • 1.23 tokens/second sustained on RTX 3060 12GB with 131,072 context
  • 2.MXFP4 quantization, GGML_CUDA_GRAPH_OPT=1 for speed
  • 3.Replaces $100/month Claude Max for front/back-end web dev
  • 4.Config: llama-server with -ngl 999, -c 131072, CUDA acceleration
  • 5.Needs 64GB system RAM minimum

Impact Analysis

Enables high-quality coding AI on consumer hardware, cutting costs for indie devs. Boosts local LLM adoption for production workflows. Highlights efficient quantization for memory-constrained setups.

Technical Details

Uses llama-server with specific flags: -ngl 999, -t 12, -fa on, -cmoe, 131k context, batch 512. MXFP4 GGUF model on 64GB RAM PC.

๐Ÿ“ฐ

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Original source: Reddit r/LocalLLaMA โ†—