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OpenAI ships Codex rust-v0.166.0 with GPT-6.1 Terra

Agent runtimes expand native model catalogs.

  • TOOLING
Releaserust-v0.166.029 October 2026

codex

Terminal coding agent adding GPT-6.1 Terra support, transcript selection, and queue resumption.

Bundles direct support for newly released flagship model tiers across bundled, Vertex, and Bedrock catalogs.

Licence
Apache-2.0
Platform
Cross-platform terminal agent runtime (Rust / Node.js 24.22.1)
Releasev2.1.31631 October 2026

claude-code

Terminal coding agent adding pooled group budgets, layered gateway policy modes, and Bedrock guardrail input tagging.

Deepens enterprise gateway governance controls while signaling the upcoming retirement of Opus 4.8 fast mode.

Licence
NOASSERTION
Platform
Terminal agent runtime across macOS, Linux, and Windows

What this changes

Agent runtimes are formalizing enterprise cost controls and expanding model catalogs. Teams must audit gateway policies and prepare for upcoming model tier deprecations before migrating workflows; teams should validate it against their own stack before adoption.

The card

OpenAI ships Codex rust-v0.166.0 with GPT-6.1 Terra — the card published on 31 October 2026

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Sources

OpenAI Codex GitHub Releases (https://github.com/openai/codex/releases/tag/rust-v0.166.0); Anthropic Claude Code GitHub Releases (https://github.com/anthropics/claude-code/releases/tag/v2.1.316)

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