v0.52.26

charmbracelet/catwalkv0.52.26Sep 3, 2026by github-actions[bot]

AI Summary

v0.52.26 introduces support for new AI model versions, specifically adding Gemini 3.8 Flash for both Copilot and general Gemini usage, as well as the OpenAI GPT-6 Astra model.

Key Highlights

Added support for Gemini 3.8 Flash model
Added support for OpenAI GPT-6 Astra model
Verified artifacts via Sigstore for security
Maintenance updates to model integrations

New Features

Gemini 3.8 Flash integration
OpenAI GPT-6 Astra integration

Full Release Notes

## Changelog
### Other stuff
* a8ca699226e60d36c56d9a4854f926291c30eebe: chore(copilot): add gemini 3.8 flash (@andreynering)
* 3a60be0abf845955a3d5957d8d478a5b645f2b26: chore(gemini): add gemini 3.8 flash (@andreynering)
* 5b786200d83c4034d1632f8e4ea99aae94f3ef24: chore(openai): add gpt-6 astra (#569) (@andreynering)

---

<details>
<summary>Verifying the artifacts</summary>

First, download the [`checksums.txt` file](https://github.com/charmbracelet/catwalk/releases/download/v0.52.26/checksums.txt) and the [`checksums.txt.sigstore.json` file](https://github.com/charmbracelet/catwalk/releases/download/v0.52.26/checksums.txt.sigstore.json) files, for example, with `wget`:

```bash
wget 'https://github.com/charmbracelet/catwalk/releases/download/v0.52.26/checksums.txt'
wget 'https://github.com/charmbracelet/catwalk/releases/download/v0.52.26/checksums.txt.sigstore.json'
```

Then, verify it using [`cosign`](https://github.com/sigstore/cosign):

```bash
cosign verify-blob \
  --certificate-identity 'https://github.com/charmbracelet/meta/.github/workflows/goreleaser.yml@refs/heads/main' \
  --certificate-oidc-issuer 'https://token.actions.githubusercontent.com' \
  --bundle 'checksums.txt.sigstore.json' \
  ./checksums.txt
```

If the output is `Verified OK`, you can safely use it to verify the checksums of other artifacts you downloaded from the release using `sha256sum`:

```bash
sha256sum --ignore-missing -c checksums.txt
```

Done! You artifacts are now verified!

</details>

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