OpenAI Codex CLI rust-v0.156.1

OpenAI Codex CLI rust-v0.156.1 was released on September 23, 2026.

Summary

OpenAI Codex CLI rust-v0.156.1 now lets you choose between two powerful new models, GPT-6 Sol and Luna, with smarter recommendations for your coding workflow. Check the full changelog to see what else improved under the hood.

Release Context

This was the 95th OpenAI Codex CLI release of 2026 tracked by Havoptic.
It shipped the same day as OpenAI Codex CLI rust-v0.156.0 (September 22, 2026).

Shipped around the same time

Within 3 days of this release, other AI coding tools also shipped:

Grok Build v1.0.42 (September 26, 2026)
Factory Droid v0.228.0 (September 26, 2026)
Claude Code v2.1.283 (September 25, 2026)
Antigravity CLI v1.2.11 (September 25, 2026)
Factory Droid v0.227.0 (September 25, 2026)

Compare OpenAI Codex CLI

Release Notes

New Features - Choose GPT-6 Sol or GPT-6 Luna from the model picker. The rate-limit switch prompt now recommends GPT-6 Luna. (47405) Changelog Full Changelog: https://github.com/openai/codex/compare/rust-v0.156.0...rust-v0.156.1 - 47405 [hotfix 0.156.0] Add GPT-6 Sol and Luna to the model catalog (47332) @imac-oai

View original release

Other Recent OpenAI Codex CLI Releases

rust-v0.169.0 (November 13, 2026)
rust-v0.168.0 (November 13, 2026)
rust-v0.167.2 (November 11, 2026)
rust-v0.167.1 (November 10, 2026)
rust-v0.167.0 (November 6, 2026)

Upgrading from rust-v0.156.1? See all 21 releases since.

All OpenAI Codex CLI releases · All AI coding tool releases on Havoptic