release: 3.5.0

[openai-sdks]

Automated Release PR

3.5.0 (2026-08-27)

Features

• api: make function call output call IDs optional (#3738) (c74501d)

---

This PR was generated with Release Please. See documentation.

[github-actions]

Castiron custom code

✅ No new custom-code files detected.

34 mixed files remain; 0 existing customizations changed.

Compared c74501d7dc69 → 52d9dd799c32. Generated baselines verified.

34 existing customizations unchanged

• api.md
• scripts/castiron/README.md
• scripts/castiron/custom_code_report.py
• scripts/castiron/test_custom_code_report.py
• src/openai/init.py
• src/openai/_client.py
• src/openai/resources/audio/transcriptions.py
• src/openai/resources/audio/translations.py
• src/openai/resources/beta/beta.py
• src/openai/resources/beta/responses/responses.py
• src/openai/resources/beta/threads/runs/runs.py
• src/openai/resources/beta/threads/threads.py
• src/openai/resources/chat/completions/completions.py
• src/openai/resources/embeddings.py
• src/openai/resources/files.py
• src/openai/resources/realtime/realtime.py
• src/openai/resources/responses/responses.py
• src/openai/resources/uploads/uploads.py
• src/openai/resources/vector_stores/file_batches.py
• src/openai/resources/vector_stores/files.py
• src/openai/resources/videos.py
• src/openai/resources/webhooks/init.py
• src/openai/resources/webhooks/webhooks.py
• src/openai/types/chat/init.py
• src/openai/types/chat/chat_completion_message_tool_call.py
• src/openai/types/fine_tuning/fine_tuning_job_integration.py
• src/openai/types/responses/init.py
• src/openai/types/responses/response.py
• src/openai/types/responses/response_function_web_search.py
• src/openai/types/responses/response_function_web_search_param.py
• src/openai/types/responses/tool.py
• src/openai/types/responses/tool_param.py
• src/openai/types/webhooks/init.py
• tests/api_resources/test_videos.py

A changed generated baseline means this report cannot reliably identify which handwritten lines changed.

Inspect the custom-code diff

Download the exact patch produced by this run (requires repository access):

gh run download 33026993914 --repo openai/openai-python \
  --name castiron-custom-code-33026993914-1 --dir /tmp/castiron-custom-code-33026993914-1
git apply --stat /tmp/castiron-custom-code-33026993914-1/custom-code.patch
cat /tmp/castiron-custom-code-33026993914-1/custom-code.patch

Or reproduce it from an SDK checkout containing the vendored reporter:

git fetch --no-tags origin c74501d7dc6946633fead7883ad02d8a188cf605 52d9dd799c32f94faf38cc2684ca9777a874a81d
python3 scripts/castiron/custom_code_report.py report \
  --base c74501d7dc6946633fead7883ad02d8a188cf605 \
  --head 52d9dd799c32f94faf38cc2684ca9777a874a81d --fetch --require-head-hash --public \
  --out /tmp/castiron-custom-code-52d9dd799c32
cat /tmp/castiron-custom-code-52d9dd799c32/custom-code.patch

This is the current full custom patch for mixed files, not an attribution of only the handwritten lines changed by this PR.

Full report and patch

[openai-sdks]

OkTest Summary

✅ 237/237 SDK tests passed in 12.336s for Python SDK PR #3739.

Test results — 42 files

Test	Result	Time
tests/chat-completions-complex-body.test.ts	✅ Passed	167ms
tests/chat-completions-create.test.ts	✅ Passed	270ms
tests/chat-completions-stream.test.ts	✅ Passed	152ms
tests/files-content-binary.test.ts	✅ Passed	206ms
tests/files-create-multipart.test.ts	✅ Passed	150ms
tests/files-list-pagination.test.ts	✅ Passed	164ms
tests/initialize-config.test.ts	✅ Passed	205ms
tests/instance-isolation.test.ts	✅ Passed	187ms
tests/models-list.test.ts	✅ Passed	151ms
tests/responses-background-lifecycle.test.ts	✅ Passed	295ms
tests/responses-body-method-errors.test.ts	✅ Passed	385ms
tests/responses-cancel-timeout.test.ts	✅ Passed	198ms
tests/responses-cancel.test.ts	✅ Passed	295ms
tests/responses-compact-retries.test.ts	✅ Passed	349ms
tests/responses-compact.test.ts	✅ Passed	407ms
tests/responses-create-advanced-stream.test.ts	✅ Passed	171ms
tests/responses-create-advanced.test.ts	✅ Passed	305ms
tests/responses-create-disconnect.test.ts	✅ Passed	1.442s
tests/responses-create-errors.test.ts	✅ Passed	231ms
tests/responses-create-malformed-api-responses.test.ts	✅ Passed	421ms
tests/responses-create-retries.test.ts	✅ Passed	273ms
tests/responses-create-stream-failures.test.ts	✅ Passed	146ms
tests/responses-create-stream-timeout.test.ts	✅ Passed	217ms
tests/responses-create-stream-wire.test.ts	✅ Passed	4.235s
tests/responses-create-stream.test.ts	✅ Passed	104ms
tests/responses-create-terminal-states.test.ts	✅ Passed	262ms
tests/responses-create-timeout.test.ts	✅ Passed	216ms
tests/responses-create.test.ts	✅ Passed	266ms
tests/responses-delete.test.ts	✅ Passed	235ms
tests/responses-input-items-errors.test.ts	✅ Passed	461ms
tests/responses-input-items-list.test.ts	✅ Passed	371ms
tests/responses-input-items-options.test.ts	✅ Passed	418ms
tests/responses-input-tokens-count-timeout.test.ts	✅ Passed	236ms
tests/responses-input-tokens-count.test.ts	✅ Passed	267ms
tests/responses-malformed-inputs.test.ts	✅ Passed	3.237s
tests/responses-not-found-errors.test.ts	✅ Passed	294ms
tests/responses-parse.test.ts	✅ Passed	490ms
tests/responses-retrieve-retries.test.ts	✅ Passed	324ms
tests/responses-retrieve.test.ts	✅ Passed	309ms
tests/responses-stored-method-errors.test.ts	✅ Passed	606ms
tests/retry-behavior.test.ts	✅ Passed	3.151s
tests/sdk-error-shape.test.ts	✅ Passed	323ms

View OkTest run #33026975968

_{SDK merge (2a4d08140038) · head (52d9dd799c32) · base (c74501d7dc69) · OkTest (2b1bdfd25e98)}

[openai-sdks]

🤖 Created releases:

• v3.5.0

🌻