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Qwen2.5 Coder 3B

Model, local llm, by Alibaba Qwen

Assessment

The best small helper for a 6 GB card: fast, loads in a few gigabytes, and strong at the structured, code-shaped work an agent fans out. Keep it resident and send it small questions.

2026-10-09

Strengths

  • Code completion, small edits and JSON at about 48 tokens a second on a 6 GB card
  • Stays loaded at a 32K context in about 3.4 GB of VRAM
  • Fast fan-out: many small calls in parallel from an agent

Limitations

  • Reasoning across a whole repository
  • Shares a small card with any vision model, so a photo evicts it

Qwen2.5 Coder 3B is the code-specialised member of the Qwen2.5 family at the three-billion size.[1] It was trained on a large share of source code and code-adjacent text, which shows in two ways that matter for agents: it writes syntactically valid code and JSON more reliably than a general model of the same size, and it follows terse, tool-like instructions well.

What it is for

The helper role: the many small calls an agent makes around the main model. Rename a function, write a commit message, turn a sentence into a JSON object, pick a category, draft a prompt. Served through Ollama it decodes at about 48 tokens a second on a GTX 1060 and loads in about 3.4 GB at a 32K context, so it can stay resident on a card that size.[2]

Things to know

  • A 6 GB card holds one model at a time. If a vision model is loaded for a photo, this one is evicted and the next call pays a reload of about twelve seconds.
  • Send no keep_alive and no num_ctx from a client unless you mean to change what stays loaded; the server pins the model and a different context length is a reload.
  • It is not a reasoning model and does not pretend to be. For judgment, go up a tier.

History

  • 2026-10-09: article written and published.
  • 2026-10-09: entry created.

Practices

References

  1. qwen2.5-coder on Ollama ^
  2. Qwen2.5-Coder on GitHub ^

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