language_models: Change default fast model for Zed provider (#29600)
Marshall Bowers
created
This PR changes the default fast model for the Zed provider from Claude
3.5 Haiku to Claude 3.5 Sonnet.
We don't offer Claude 3.5 Haiku to users.
Closes https://github.com/zed-industries/zed/issues/29505.
Release Notes:
- agent: Changed the default fast model for the Zed provider to Claude
3.5 Sonnet.