How to enable 1M-token context window in GPT-5.6 Sol
JeremyNguyenPhD · x · 2026-08-18
This post explains how to enable a 1-million-token context window for GPT-5.6 Sol within Codex. By updating the /.codex/config.toml file with specific settings for model, modelcontextwindow, and modelautocompacttokenlimit, users can allow the model to retain significantly more code and conversation history before summarization.
Related event: Codex Users Unlock 1M Token Context for GPT-5.6 Sol with a Config Tweak(12 posts)→
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