Reimplements #36722 while fixing the race that required the revert in #36932. When no default model is configured, this picks an environment fallback by authenticating all providers. It always prefers the Zed cloud provider when it's authenticated, and waits for its models to load before picking another provider as the fallback, so we don't flicker from Zed models to Anthropic while sign-in is in flight. The fallback is recomputed whenever provider state changes (via `ProviderStateChanged`/`AddedProvider`/`RemovedProvider` events), so the selection becomes correct as soon as cloud models arrive. ### What changed vs. the original PR - `language_models::init` now owns `authenticate_all_providers` (previously done in `LanguageModelPickerDelegate` and `agent`'s `LanguageModels`). - After all authentications settle, and on any subsequent provider state change, `update_environment_fallback_model` recomputes the fallback. - The fallback logic prefers Zed cloud: if the cloud provider is authenticated, only use it (waiting for its models to load). Otherwise, fall through to the first authenticated provider with a default or recommended model. - `LanguageModelRegistry::default_model()` falls back to `environment_fallback_model` when no explicit default is set. - Existing `Thread`s that are empty are updated to the new default when `DefaultModelChanged` fires, so a blank thread started before sign-in switches to Zed models once the user signs in. Release Notes: - agent: Automatically select a model when there's no selected model or configured default
Zed
Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
Installation
On macOS, Linux, and Windows you can download Zed directly or install Zed via your local package manager (macOS/Linux/Windows).
Other platforms are not yet available:
- Web (tracking issue)
Developing Zed
Contributing
See CONTRIBUTING.md for ways you can contribute to Zed.
Also... we're hiring! Check out our jobs page for open roles.
Licensing
License information for third party dependencies must be correctly provided for CI to pass.
We use cargo-about to automatically comply with open source licenses. If CI is failing, check the following:
- Is it showing a
no license specifiederror for a crate you've created? If so, addpublish = falseunder[package]in your crate's Cargo.toml. - Is the error
failed to satisfy license requirementsfor a dependency? If so, first determine what license the project has and whether this system is sufficient to comply with this license's requirements. If you're unsure, ask a lawyer. Once you've verified that this system is acceptable add the license's SPDX identifier to theacceptedarray inscript/licenses/zed-licenses.toml. - Is
cargo-aboutunable to find the license for a dependency? If so, add a clarification field at the end ofscript/licenses/zed-licenses.toml, as specified in the cargo-about book.
Sponsorship
Zed is developed by Zed Industries, Inc., a for-profit company.
If you’d like to financially support the project, you can do so via GitHub Sponsors. Sponsorships go directly to Zed Industries and are used as general company revenue. There are no perks or entitlements associated with sponsorship.