OpenAI reduces Codex Model Context Size from 372k to 272k
Summary
OpenAI Codex PR #33972 documents backporting refreshed bundled model metadata to version 0.144, merged July 18, 2026. The change updates a single JSON file and references commits across the Codex repository, illustrating routine metadata maintenance for the model. The article's title mentions a context-size change, but the content focuses on metadata updates rather than a direct adjustment to Codex's context length.