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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
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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 plugins2 changes · 4 releases touched it · latest Sep 3, 2026 · rust-v0.153.0 ↗
MCP server config1 change · 8 releases touched it · latest Jul 29, 2026 · rust-v0.146.0 ↗
sandbox settings1 change · 5 releases touched it · latest Aug 7, 2026 · rust-v0.147.0 ↗
permission rules1 change · 4 releases touched it · latest Aug 26, 2026 · rust-v0.150.0 ↗
agent context files1 change · latest Aug 26, 2026 · rust-v0.150.0 ↗

Release signals

OpenAI Codex CLIrust-v0.146.0-alpha.3.1Jul 23, 2026

alpha.3.1

Release 0.146.0-alpha.3.1Primary source ↗
OpenAI Codex CLIrust-v0.146.0-alpha.5Jul 23, 2026

alpha.5

Release 0.146.0-alpha.5Primary source ↗
OpenAI Codex CLIrust-v0.146.0-alpha.4Jul 23, 2026

alpha.4

Release 0.146.0-alpha.4Primary source ↗
OpenAI Codex CLIrust-v0.146.0-alpha.3Jul 22, 2026

alpha.3

Release 0.146.0-alpha.3Primary source ↗
OpenAI Codex CLIrust-v0.146.0-alpha.2Jul 22, 2026

alpha.2

Release 0.146.0-alpha.2Primary source ↗
OpenAI Codex CLIrust-v0.146.0-alpha.1Jul 22, 2026

alpha.1

Release 0.146.0-alpha.1Primary source ↗
OpenAI Codex CLIrust-v0.145.0-alpha.30Jul 22, 2026

alpha.30

Release 0.145.0-alpha.30Primary source ↗
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 ↗
OpenAI Codex CLIrust-v0.145.0-alpha.29Jul 21, 2026

alpha.29

Release 0.145.0-alpha.29Primary source ↗
OpenAI Codex CLIrust-v0.145.0-alpha.28Jul 21, 2026

alpha.28

Release 0.145.0-alpha.28Primary source ↗
OpenAI Codex CLIrust-v0.145.0-alpha.27Jul 21, 2026

alpha.27

Release 0.145.0-alpha.27Primary source ↗
OpenAI Codex CLIrust-v0.145.0-alpha.25Jul 20, 2026

alpha.25

Release 0.145.0-alpha.25Primary source ↗
OpenAI Codex CLIrust-v0.145.0-alpha.24Jul 18, 2026

alpha.24

Release 0.145.0-alpha.24Primary source ↗
OpenAI Codex CLIrust-v0.144.6Jul 18, 2026

Refreshed bundled instructions for GPT-5.6 Sol, Terra, and Luna, and corrected their context windows to 272,000 tokens. (#33972, #34009)

  • #33972 Backport refreshed bundled model metadata to 0.144 @sayan-oai
  • #34009 Narrow 0.144 hotfix to GPT-5.6 prompts and context @sayan-oai
Primary source ↗
OpenAI Codex CLIrust-v0.145.0-alpha.23Jul 17, 2026

alpha.23

Release 0.145.0-alpha.23Primary source ↗

Polled sources

[openai-developers] OpenAI Developers Codex

html · every 720m

https://developers.openai.com/codex

[github-releases] GitHub Releases

github_releases · every 60m

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