Developer Switches to Local AI Model After Claude Session Limit Corrupts Git Commit

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A developer using a one-liner shell command to auto-generate Git commit messages via Claude AI ended up with the error message "You've hit your session limit" saved as an actual commit in their repository. The incident prompted them to explore running a local language model using Ollama, ultimately choosing the quantized qwen2.5-coder:1.5b model due to its low memory footprint of around 1.2 GB on an 8 GB RAM laptop. While the local setup worked without session limits, the developer discovered that Ollama restricts the default context window to 4,096 tokens based on available VRAM, causing the model to only process part of the diff and return inaccurate commit messages. Crucially, the model did not flag its own incomplete input — it responded confidently despite missing context, highlighting a key limitation of truncated inference. This led the developer to explore Modelfiles, a configuration layer in Ollama that allows tuning model parameters beyond prompt engineering alone.

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