v0.52.39

Name: catwalk
Author: charmbracelet

charmbracelet/catwalkv0.52.39Sep 14, 2026by github-actions[bot]

Upgrading?

What changed from v0.52.38 → v0.52.39?What's new in v0.52.40 after v0.52.39?

AI Summary

This release focuses on fixing model configuration issues for the Kimi and DeepSeek providers, including removing duplicates and correcting image attachment support. It also introduces the DeepSeek V4.1 Flash model to the Alibaba provider.

Key Highlights

Fixed duplicate Kimi K3 models in the Copilot integration.
Corrected DeepSeek-V4-Flash to accept image attachments.
Added DeepSeek V4.1 Flash model to the Alibaba provider.
Verified artifact integrity using Cosign and checksums.

New Features

Added DeepSeek V4.1 Flash model support.

Full Release Notes

## Changelog
### Fixed
* b093c07082cffd7c023cd4012e31139210455e33: fix(copilot): remove duplicated kimi k3 models (@andreynering)
* 20825482c7424be7f5ac683362f9a888825b9973: fix(deepseek): mark deepseek-v4-flash as accepting image attachments (#594) (@m1k3s0)
### Other stuff
* 4eb322e1da8342c40a21ad05613b06306be41874: chore: add deepseek v4.1 flash to alibaba (#596) (@andreynering)
* 4ccd35f74353dd7e068595c7587ae003b5311ae7: chore: auto-update generated files (#592) (@github-actions[bot])

---

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

First, download the [`checksums.txt` file](https://github.com/charmbracelet/catwalk/releases/download/v0.52.39/checksums.txt) and the [`checksums.txt.sigstore.json` file](https://github.com/charmbracelet/catwalk/releases/download/v0.52.39/checksums.txt.sigstore.json) files, for example, with `wget`:

```bash
wget 'https://github.com/charmbracelet/catwalk/releases/download/v0.52.39/checksums.txt'
wget 'https://github.com/charmbracelet/catwalk/releases/download/v0.52.39/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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