Summary
OpenAI’s Codex CLI (an open-source Rust release train) keeps shipping rapidly: v0.146.0, released July 29, 2026, adds Agent Plugins manifests with workspace plugin publishing and new plugin marketplaces including Amazon Bedrock and Claude Code, upgrades the CLI’s Auto-review model from GPT-5.4 to GPT-5.6 Luna, and improves session handling with named sessions (/new, /clear), pinned threads, side conversations, and forkable thread history. It can also connect its app-server to remote Code Mode hosts over WebSocket and run standalone web search for compatible custom model providers.
What changed
As of v0.146.0 (July 29, 2026), Codex CLI added Agent Plugins manifests, workspace plugin publishing, and additional plugin marketplaces (including Amazon Bedrock and Claude Code); upgraded Auto-review from GPT-5.4 to GPT-5.6 Luna; added named sessions (/new, /clear), pinned threads, and side conversations; forkable threads with paginated history and temporary forks; app-server to remote Code Mode hosts over WebSocket; and standalone web search for compatible custom model providers.
Why it matters
Publishing Codex plugins to rival marketplaces like Amazon Bedrock and Claude Code is a notable interoperability move, positioning Codex plugins as portable across competing agent ecosystems rather than locked to OpenAI. Swapping Auto-review onto the freshly discounted GPT-5.6 Luna ties directly to OpenAI's July 30 price cuts, making automated code review cheaper to run at scale.
Evidence excerpt
The latest version is v0.146.0, released on July 29, 2026 ... Support for Agent Plugins manifests, workspace plugin publishing, and additional plugin marketplaces for Amazon Bedrock and Claude Code ... OpenAI upgraded Auto-review in the Codex CLI from GPT-5.4 to GPT-5.6 Luna.