Anant GoelandEric Holk 9f164a0d2e agent: Share compatible Chat Completions infrastructure (#62652)
OpenAI-compatible providers currently cannot reuse Zed's OpenAI Chat
Completions transport unless they also adopt the exact OpenAI request
and response types. OpenRouter therefore maintained its own copy of
request construction, authentication, status handling, response reading,
and server-sent event framing.

This change extracts that mechanical transport into two provider-neutral
functions in `open_ai`: one for streaming requests and one for
non-streaming requests. They accept any serializable request envelope,
preserve custom headers and provider names, return untyped JSON for
provider-specific decoding, and retain typed failures for serialization,
request construction, HTTP transport, response reading, and
deserialization. The existing OpenAI entry points remain as
compatibility wrappers, so existing callers keep the same API and
behavior.

The abstraction deliberately stops at the wire boundary. OpenRouter
continues to own its request and response schemas, attribution headers,
routing controls, cache placement, and API-specific error
interpretation. It now adapts the shared framed stream into those
OpenRouter types instead of implementing a second HTTP and server-sent
event stack.

Moving OpenRouter onto the shared path also requires the ordinary Chat
Completions schema and event mapper to preserve compatible metadata that
OpenRouter already emits. This includes structured reasoning details
needed for replay, fragmented reasoning accumulation, prompt-cache read
and write usage, and thought signatures attached to tool calls. The
stream exposes `[DONE]` explicitly rather than treating it as
indistinguishable from an unexpected end of the response body.
OpenRouter's routing session identifier is hashed before transmission so
Zed's internal thread identifier is not exposed.

The diff is larger than the extracted transport alone because the shared
API is additive, the compatibility metadata must be represented in the
common wire types and event mapper, and the provider-specific adapter
remains intentionally independent. Roughly four hundred added lines are
focused transport, metadata, error-classification, attribution, caching,
and privacy tests. The provider-level OpenRouter implementation becomes
smaller while preserving its existing behavior.

Testing performed:

- `cargo test -p open_ai`
- `cargo test -p open_router`
- `cargo nextest run -p language_models open_router`
- `cargo check -p edit_prediction -p edit_prediction_cli`
- `cargo fmt --all -- --check`
- `./script/clippy -p open_ai -p open_router -p language_models -p
edit_prediction_cli`
- `cargo machete`

Release Notes:

- Improved OpenRouter reasoning continuity and request privacy.

---------

Co-authored-by: Eric Holk <eric@zed.dev>
2026-08-14 22:42:27 +00:00
2026-08-12 08:35:43 +00:00
2026-07-29 13:03:22 +00:00
2026-01-22 23:57:26 +05:30
2026-07-27 05:59:53 +00:00
WIP
2023-12-14 09:25:14 -07:00
2026-08-09 22:29:52 +00:00
2026-08-09 22:29:52 +00:00
2025-02-04 09:02:59 -05:00
2025-10-27 13:27:59 -04:00
2026-06-27 15:06:29 +00:00
2025-10-17 18:58:14 +00:00
2026-03-17 16:34:35 +00:00

Zed

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Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.


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