Pull Request #33972 in OpenAI’s Codex repository indicates that Codex’s model context size is being reduced from 372K to 272K tokens, a decrease of approximately 26.9%. The change was discussed on Hacker News on July 19, 2026, receiving a score of 371 across 166 comments. The supplied material does not establish the specific model, rationale, rollout schedule, or compatibility impact on existing workflows.
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