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Assistants/OpenAI Codex CLI

OpenAI Codex CLI

OpenAI · cli agent · paid

Lightweight coding agent that runs in your terminal (Codex CLI).

agentcliopenaicodex
Website ↗Docs ↗
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Config files OpenAI Codex CLI has changed

Config you own — hooks, permission rules, MCP servers, settings — that releases below state a change to. Counted from the release notes we track, newest change first. How a harness is layered.

skills and plugins3 changes · 9 releases touched it · latest Sep 29, 2026 · rust-v0.159.0 ↗
agent context files3 changes · latest Oct 15, 2026 · rust-v0.163.0 ↗
MCP server config2 changes · 16 releases touched it · latest Sep 9, 2026 · rust-v0.154.0 ↗
permission rules2 changes · 6 releases touched it · latest Oct 15, 2026 · rust-v0.163.0 ↗
hooks1 change · 6 releases touched it · latest Oct 15, 2026 · rust-v0.163.0 ↗
sandbox settings1 change · 6 releases touched it · latest Aug 7, 2026 · rust-v0.147.0 ↗

Security advisories

2 published for Codex CLI, from the GitHub Advisory Database.

Release signals

OpenAI Codex CLIrust-v0.145.0Jul 21, 2026

Added experimental paginated thread history with efficient resume, search, persisted names, sub-agent support, and memories. (#33364, #33907, #34085, #34229, #34386)

  • Expanded `/import` to migrate Cursor and Claude Code settings, MCP servers, plugins, sessions, commands, and project-scoped memories. (#31672, #33411, #33426, #33444)
  • Added experimental Amazon Bedrock login, custom endpoint and authentication support, and GPT-5.6 Sol as the default Bedrock model. (#31327, #33170, #33175, #32288, #33695)
  • +149 more changes
Read the full release note

New Features

  • Added experimental paginated thread history with efficient resume, search, persisted names, sub-agent support, and memories. (#33364, #33907, #34085, #34229, #34386)

  • Expanded /import to migrate Cursor and Claude Code settings, MCP servers, plugins, sessions, commands, and project-scoped memories. (#31672, #33411, #33426, #33444)

  • Added experimental Amazon Bedrock login, custom endpoint and authentication support, and GPT-5.6 Sol as the default Bedrock model. (#31327, #33170, #33175, #32288, #33695)

  • Added audio inputs and tool outputs, including common local audio formats, and introduced streaming realtime V3 conversations. (#33261, #33856, #33932, #34080, #34385)

  • Stabilized the opt-in multi-agent V2 experience with configurable sub-agent models, reasoning levels, concurrency, restored roles, and improved agent navigation. (#33550, #33631, #33657, #33841, #34383)

  • Added secure, clickable inline visualization links in the terminal UI. (#33925, #34217, #34346)

Bug Fixes

Excerpt ends here — this release continues at the source ↗.

Primary source ↗

Polled sources

[openai-developers] OpenAI Developers Codex

Product page · not polled

https://developers.openai.com/codex

[github-releases] GitHub Releases

GitHub Releases · last read Oct 24, 2026

https://github.com/openai/codex/releases