Code & Chain · Signal Desk

Codex Raises GPT-6.1 Sol Default Context to 500k

Original sourceThe New Way

Summary

OpenAI Codex has raised the default context for GPT-6.1 Sol from 272k to 500k tokens, extendable to 1 million tokens, with no extra long-context charge for Sol subscribers. The change was described publicly by Codex team member Tibo Sottiaux and has not yet been reflected in OpenAI's official chang…

Key points

  • A larger default context directly reduces how often large projects need manual context splitting—especially noticeable for long-running coding agents.
  • Context window is a core constraint for coding agents, and doubling the default will change how agents are used on large projects.
  • Developers using Codex can have agents handle larger codebases at once, but official docs are not yet updated, so stability still needs hands-on validation.

Editorial note

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