**Observed behavior:** Inline assistant failed for GPT-4.1, Gemini, and other non-Anthropic models. Claude worked correctly because Anthropic's API accepts `"any"` as a valid value. ## Fix Renamed `ToolChoice::Any` → `ToolChoice::Required` in both `copilot_chat.rs` and `responses.rs`, matching the convention used by other OpenAI-compatible providers (`open_ai`, `lmstudio`, `open_router`). `copilot_chat::ToolChoice` is a wire type only for the `/chat/completions` path — Anthropic models go through `into_anthropic()` and never touch it, so no per-model logic is needed. Also fixes the same serialization bug in `responses::ToolChoice`, which was not covered by the original approach, and adds regression tests for both. ## Affected models - `gpt-4.1` via copilot_chat provider - `gemini-*` via copilot_chat provider - Likely affects all OpenAI-compatible models routed through copilot_chat ## Screenshots **Bug (only Claude works, Gemini and GPT-4.1 fail):** <img width="598" height="209" alt="image" src="https://github.com/user-attachments/assets/bbd418d9-7de3-4191-9ca9-fd1961534e23" /> **Fix:** <img width="532" height="154" alt="image" src="https://github.com/user-attachments/assets/86bb0f8e-67e6-4417-9b78-b1b7ad328e9e" /> **Result:** After the fix, all models work correctly via inline assistant. ## Release Notes - Fix inline assistant 400 errors for GPT-4.1, Gemini, and other non-Anthropic models via the copilot_chat provider (`tool_choice` was sending `"any"` instead of `"required"`)
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.