Codex CLI Version Tracker: Environment Variables, Models & Features#

Published on July 13, 2026

We analyze OpenAI's Codex CLI releases to document the environment variables, model IDs, and feature surface of each build. Because Codex is open source, every finding is grounded in the published source at the release tag and the tag-to-tag diff — commits, contributors, and the subsystems that moved — plus the official changelog.

Tracking the other agents too? See the Claude Code Version Tracker, OpenCode Version Tracker, Gemini CLI Version Tracker, and Amp Version Tracker.

Version History#

v0.146.0 — August 3, 2026#

Thread fork/pin/name · Agent Plugin marketplaces · Code Mode over WebSocket · 563 commits · 59 authors

Codex CLI v0.146.0 is the first release tracked since the 0.144.3 baseline. It makes conversations first-class threads you can name with /new or /clear, pin, and fork with full paginated history, building on the experimental thread history, resume, and memories added in 0.145.0. Agent Plugins gain manifests, workspace publishing, and marketplaces for Amazon Bedrock and Claude Code, while 0.145.0's /import pulls settings, MCP servers, plugins, and memories out of Cursor and Claude Code. The app-server now connects to remote Code Mode hosts over WebSocket, standalone web search opens to custom providers, and reliability work honors proxies across every network path. The diff is a fully staffed sprint: 563 commits from 59 mostly OpenAI-staff authors between July 20 and July 29, roughly 65 a day, landing almost entirely in the codex-rs workspace.

v0.144.3 — July 14, 2026#

178 env vars · 40 model IDs · baseline snapshot

The first tracked Codex CLI version, read from OpenAI's Rust source at tag rust-v0.144.3. 178 env vars and 40 model-ID strings cluster around sandboxing, a credential-brokering network proxy, cloud execution, and an app marketplace. The reference every later post diffs against.