0.7.0-alpha.2 (2026-04-01)

Full Changelog: v0.7.0-alpha.1...v0.7.0-alpha.2

Features

• add reasoning as valid conversation item (029da3f)
• add reasoning output types to OpenAI Responses API spec (3bb043e)

Chores

• tests: bump steady to v0.20.1 (82edffa)
• tests: bump steady to v0.20.2 (8aab687)

Refactors

• remove deprecated register/unregister model endpoints (6c82145)

0.7.0-alpha.1 (2026-03-28)

Full Changelog: v0.6.1-alpha.1...v0.7.0-alpha.1

⚠ BREAKING CHANGES

• eliminate GET /chat/completions/{completion_id} conformance issues
• rename agents API to responses API
• eliminate /files/{file_id} GET differences

Features

• Add stream_options parameter support (b4c2f15)
• eliminate /files/{file_id} GET differences (1f28d73)
• eliminate GET /chat/completions/{completion_id} conformance issues (dad9f54)
• internal: implement indices array format for query and form serialization (6694121)
• responses: add cancel endpoint for background responses (d9bc91a)

Bug Fixes

• deps: bump minimum typing-extensions version (50ea4d7)
• inference: improve chat completions OpenAI conformance (147b88b)
• pydantic: do not pass by_alias unless set (f6836f9)
• remove duplicate dataset_id parameter in append-rows endpoint (d6a79d0)
• sanitize endpoint path params (9b288d5)

Chores

• ci: skip lint on metadata-only changes (b096c2c)
• internal: tweak CI branches (1df7e26)
• internal: update gitignore (0e98cfd)
• internal: version bump (f468096)
• tests: bump steady to v0.19.4 (f5ad8f8)
• tests: bump steady to v0.19.5 (55689e1)
• tests: bump steady to v0.19.6 (87cb87e)
• tests: bump steady to v0.19.7 (10f6ed7)

Refactors

• remove fine_tuning API (021bd5e)
• remove tool_groups from public API and auto-register from provider specs (c0df2dc)
• rename agents API to responses API (f5c27db)
• rename rag-runtime provider to file-search (94a14da)
• tests: switch from prism to steady (23d591c)

0.6.1-alpha.1 (2026-03-13)

Full Changelog: v0.5.0-alpha.2...v0.6.1-alpha.1

⚠ BREAKING CHANGES

• improve consistency of post-training API endpoints

Features

• accept list content blocks in Responses API function_call_output (f6f1fc3)
• Add prompt_cache_key parameter support (6b45699)
• add skip_model_availability to openai_mixin for remote models (7ef952b)
• add support for 'frequency_penalty' param to Responses API (56d39cc)
• add support for 'presence_penalty' param to Responses API (4f57d15)
• add support for /responses background parameter (4f8bf45)
• Add top_logprobs parameter support (2196986)
• add top_p parameter support to responses API (23e3b9f)
• Add truncation parameter support (7501365)
• improve consistency of post-training API endpoints (99057fd)
• inference: bidirectional reasoning token passthrough for chat completions (c314639)
• vector_io: Implement Contextual Retrieval for improved RAG search quality (89ec5a7)

Bug Fixes

• align chat completion usage schema with OpenAI spec (3974d5d)
• Enabled models list works (#314) (acd5e64)
• inference: use flat response message model for chat/completions (e58e2e4)
• responses: achieve full OpenResponses conformance — 6/6 tests passing (631ab2c)
• stainless: handle [DONE] SSE terminator in streaming responses (17f0029)
• vector_io: align Protocol signatures with request models (ea58fd8)

Chores

• api: minor updates (17a2705)
• ci: bump uv version (f014d4c)
• ci: skip uploading artifacts on stainless-internal branches (dbddad9)
• docs: add missing descriptions (f1a093b)
• format all api.md files (0e3e262)
• internal: add request options to SSE classes (2ecc682)
• internal: bump dependencies (612291e)
• internal: fix lint error on Python 3.14 (a0f6975)
• internal: make test_proxy_environment_variables more resilient (6bc2bb4)
• internal: make test_proxy_environment_variables more resilient to env (44bbae1)
• test: do not count install time for mock server timeout (185de33)
• update mock server docs (92cb087)
• update placeholder string (406b9bb)

Refactors

• types: use extra_items from PEP 728 (629ca09)

0.5.0-alpha.2 (2026-02-05)

Full Changelog: v0.5.0-alpha.1...v0.5.0-alpha.2

Features

• Adds support for the safety_identifier parameter (f20696b)

0.5.0-alpha.1 (2026-02-04)

Full Changelog: v0.4.0-alpha.15...v0.5.0-alpha.1

Features

• client: add custom JSON encoder for extended type support (ab99ad0)
• client: add support for binary request streaming (d17dede)

Chores

• ci: upgrade actions/github-script (b6d410f)
• internal: codegen related update (a176b2e)
• internal: codegen related update (4cf153d)
• internal: update actions/checkout version (527e428)
• internal: version bump (580d0ff)

0.4.0-alpha.15 (2026-01-06)

Full Changelog: v0.4.0-alpha.14...v0.4.0-alpha.15

Bug Fixes

• post training algorithm param (#310) (43aabc5)

0.4.0-alpha.14 (2025-12-22)

Full Changelog: v0.4.0-alpha.13...v0.4.0-alpha.14

Features

• Add metadata field to request and response (a83a98e)
• add support for tool_choice to repsponses api (32c453f)
• api: add readonly connectors API (05f867b)
• api: deprecate toolgroup and tool_runtime apis (d5cef5a)
• convert Benchmarks API to use FastAPI router (c784ae1)
• convert Datasets API to use FastAPI router (2f53a3f)
• Implement FastAPI router system (2ca4485)
• Implement include parameter specifically for adding logprobs in the output message (05a0330)
• introduce /admin API for stack administration and operations (3279ec9)
• migrate Inspect API to FastAPI router (7774bec)
• migrate Providers API to FastAPI router pattern (f8c84cd)

Bug Fixes

• client: fix issue with duplicate definitions in Go (dd94553)
• ensure streams are always closed (9dc1025)
• types: allow pyright to infer TypedDict types within SequenceNotStr (93be516)
• use async_to_httpx_files in patch method (77df10d)

Chores

• add missing docstrings (18c54f3)
• bump required uv version (2a1523b)
• deps: mypy 1.18.1 has a regression, pin to 1.17 (a900167)
• internal: add --fix argument to lint script (89e14ad)
• internal: add missing files argument to base client (9cae3df)
• internal: avoid using unstable Python versions in tests (36336dd)
• internal: version bump (597c7c6)
• update lockfile (de67c1e)
• update uv.lock (95cb22a)

Documentation

• add more examples (d24dff6)

0.4.0-alpha.13 (2025-12-15)

Full Changelog: v0.4.0-alpha.12...v0.4.0-alpha.13

Bug Fixes

• ci: restore push triggers for Stainless preview builds (71c9874)

Chores

• add license header on all files (#308) (8fe2baf)
• update uv.lock (4665b4f)

0.4.0-alpha.12 (2025-11-19)

Full Changelog: v0.4.0-alpha.11...v0.4.0-alpha.12

Bug Fixes

• Pydantic validation error with list-type metadata in vector search (#3797) (6729d3f)

0.4.0-alpha.11 (2025-11-18)

Full Changelog: v0.4.0-alpha.10...v0.4.0-alpha.11

Features

• Wire through parallel_tool_calls to Responses API (2888bed)