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Anyone using Open Source LLMs for Code Generation?

Do any of you work with open source models for code generation?

I actually only use Claude 4.5 Sonnet as a coding agent. It seems to work best for me by far, but it's not really "indie" if you make yourself dependent on a proprietary provider. I would love to work with a free LLM. Does anybody have any experience with this?

Thank you very much for sharing!

on January 16, 2026
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    I've been testing multiple open source models while building PromptProbe , a tool for measuring prompt reliability across repeated runs. My experience is that many open source models are surprisingly capable for code generation , but consistency is where they still lag behind claude. A model can solve the task once , but repeating the same prompt several times often produces noticeably different outputs. Curious if anyone here has found an open source that's both strong and consistently reliable for coding.