release: 3.4.0

[openai-sdks]

Automated Release PR

3.4.0 (2026-08-19)

Features

• api: Add obfuscation field to ChatCompletionChunk (#3690) (c7d8e1d)

Bug Fixes

• azure: encode deployment names consistently (#3683) (689538d)
• azure: resolve one authentication mode (#3689) (e3d0681)
• create upload example fixtures in private directories (#3686) (f36e6f7)
• decode SSE incrementally without limiting event size (#3687) (2598d53)
• keep Python SDK diagnostics metadata-only (#3685) (600aa8d)
• preserve WebSocket send queue byte accounting during flush (#3688) (96f966d)

Documentation

• standardize Python SDK vulnerability disclosure policy (#3642) (1fc0a21)

---

This PR was generated with Release Please. See documentation.

[openai-sdks]

OkTest Summary

✅ 237/237 SDK tests passed in 11.853s for Python SDK PR #3682.

Test results — 42 files

Test	Result	Time
tests/chat-completions-complex-body.test.ts	✅ Passed	208ms
tests/chat-completions-create.test.ts	✅ Passed	265ms
tests/chat-completions-stream.test.ts	✅ Passed	157ms
tests/files-content-binary.test.ts	✅ Passed	260ms
tests/files-create-multipart.test.ts	✅ Passed	205ms
tests/files-list-pagination.test.ts	✅ Passed	193ms
tests/initialize-config.test.ts	✅ Passed	167ms
tests/instance-isolation.test.ts	✅ Passed	185ms
tests/models-list.test.ts	✅ Passed	133ms
tests/responses-background-lifecycle.test.ts	✅ Passed	251ms
tests/responses-body-method-errors.test.ts	✅ Passed	328ms
tests/responses-cancel-timeout.test.ts	✅ Passed	197ms
tests/responses-cancel.test.ts	✅ Passed	245ms
tests/responses-compact-retries.test.ts	✅ Passed	370ms
tests/responses-compact.test.ts	✅ Passed	318ms
tests/responses-create-advanced-stream.test.ts	✅ Passed	351ms
tests/responses-create-advanced.test.ts	✅ Passed	251ms
tests/responses-create-disconnect.test.ts	✅ Passed	1.273s
tests/responses-create-errors.test.ts	✅ Passed	199ms
tests/responses-create-malformed-api-responses.test.ts	✅ Passed	257ms
tests/responses-create-retries.test.ts	✅ Passed	266ms
tests/responses-create-stream-failures.test.ts	✅ Passed	131ms
tests/responses-create-stream-timeout.test.ts	✅ Passed	235ms
tests/responses-create-stream-wire.test.ts	✅ Passed	3.957s
tests/responses-create-stream.test.ts	✅ Passed	93ms
tests/responses-create-terminal-states.test.ts	✅ Passed	218ms
tests/responses-create-timeout.test.ts	✅ Passed	213ms
tests/responses-create.test.ts	✅ Passed	231ms
tests/responses-delete.test.ts	✅ Passed	251ms
tests/responses-input-items-errors.test.ts	✅ Passed	421ms
tests/responses-input-items-list.test.ts	✅ Passed	348ms
tests/responses-input-items-options.test.ts	✅ Passed	414ms
tests/responses-input-tokens-count-timeout.test.ts	✅ Passed	254ms
tests/responses-input-tokens-count.test.ts	✅ Passed	252ms
tests/responses-malformed-inputs.test.ts	✅ Passed	2.999s
tests/responses-not-found-errors.test.ts	✅ Passed	281ms
tests/responses-parse.test.ts	✅ Passed	561ms
tests/responses-retrieve-retries.test.ts	✅ Passed	251ms
tests/responses-retrieve.test.ts	✅ Passed	342ms
tests/responses-stored-method-errors.test.ts	✅ Passed	575ms
tests/retry-behavior.test.ts	✅ Passed	3.223s
tests/sdk-error-shape.test.ts	✅ Passed	317ms

View OkTest run #32309990501

_{SDK merge (dc3a19058058) · head (052a80851761) · base (c7d8e1d26be1) · OkTest (2b1bdfd25e98)}

[github-actions]

Castiron custom code

✅ No new custom-code files detected.

52 mixed files remain; 0 existing customizations changed.

Compared c7d8e1d26be1 → 052a80851761. Generated baselines verified.

52 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/messages.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/completions.py
• src/openai/resources/embeddings.py
• src/openai/resources/files.py
• src/openai/resources/fine_tuning/jobs/checkpoints.py
• src/openai/resources/fine_tuning/jobs/jobs.py
• src/openai/resources/models.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/init.py
• src/openai/types/beta/threads/message_content.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

12 more in the full report.

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 32309992254 --repo openai/openai-python \
  --name castiron-custom-code-32309992254-1 --dir /tmp/castiron-custom-code-32309992254-1
git apply --stat /tmp/castiron-custom-code-32309992254-1/custom-code.patch
cat /tmp/castiron-custom-code-32309992254-1/custom-code.patch

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

git fetch --no-tags origin c7d8e1d26be1f958e55c80f26b648f768afabdf2 052a80851761f6b504a0468a530b73874519fa35
python3 scripts/castiron/custom_code_report.py report \
  --base c7d8e1d26be1f958e55c80f26b648f768afabdf2 \
  --head 052a80851761f6b504a0468a530b73874519fa35 --fetch --require-head-hash --public \
  --out /tmp/castiron-custom-code-052a80851761
cat /tmp/castiron-custom-code-052a80851761/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