September 25, 2026
Codex CLI gains GPT-6 models: version 0.157.0 adds Sol and Luna
At 02:31 on Sep 25, Codex CLI 0.157.0 was released with the gpt-6-sol and gpt-6-luna models. OpenAI recommends moving from gpt-5.5, gpt-5.6-sol, and gpt-5.6-terra to Sol, and from gpt-5.6-luna to Luna. In Bedrock, GPT-6 Sol became the primary and fallback model.
Previously, Codex CLI used gpt-5.5 and the gpt-5.6 line. OpenAI now recommends a path to two GPT-6 models, and the Amazon Bedrock catalog has added `openai.gpt-6-sol` and `openai.gpt-6-luna` in `global.` and `us.` variants.
Sessions are preserved. In compatible interactive sessions, Codex automatically starts a background server and offers recovery if its settings are unsuitable. `/import` now works in both remote sessions and local sessions with a background server.
Full-screen transcript mode is enabled by default, Shift-click expands a selection, and the `f` key creates a conversation branch from another application and preserves queued prompt drafts. During temporary failures, Codex retries file uploads, and the timeout limit has increased from 60 seconds to 5 minutes. To update on macOS and Linux, OpenAI specifies the command `curl -fsSL https://chatgpt.com/codex/install.sh | sh`.
In Bedrock Runtime, gpt-6-sol is now selected as both the primary and fallback model.
