Codex: rust-v0.91.0 Release

Release date:
January 25, 2026
Previous version:
rust-v0.90.0 (released January 25, 2026)
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Release Notes Published

Chores

  • Reduced the maximum allowed number of sub-agents to 6 to tighten resource usage and guardrails in agent fan-out behavior (#9861)

Changelog

Full Changelog: https://github.com/openai/codex/compare/rust-v0.90.0...rust-v0.91.0

  • #9861 chore: half max number of sub-agents @jif-oai