# Codex 0.159.1

By Steven Van · 2026-09-29

Codex 0.159.1 sets GPT-6.1 Sol as the default model in its bundled catalog and in the Amazon Bedrock Mantle and Runtime catalogs.

GPT-6.1 Sol is now the default model in the bundled catalog for [Codex](<https://creatorstoolbox.com/tools/openai-codex>). It is also the default in the Amazon Bedrock Mantle and Runtime catalogs. The change comes in [release 0.159.1](<https://github.com/openai/codex/releases/tag/rust-v0.159.1>), a point release on top of 0.159.0 that backports the catalog updates.

![Codex](<https://creatorstoolbox.com/images/codex.png>)

Codex

Cloud-based AI coding agent by OpenAI — assign tasks and Codex writes, tests, and ships code in a sandboxed environment.

[View Codex →](<https://creatorstoolbox.com/tools/openai-codex>)

[Read the original announcement →](<https://github.com/openai/codex/releases/tag/rust-v0.159.1>)

[Read Codex 0.159.1 on Creators Toolbox](<https://creatorstoolbox.com/blog/codex-codex-0-159-1>)

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Canonical source: https://creatorstoolbox.com/blog/codex-codex-0-159-1