release: 3.26.0

[openai-sdks]

Automated Release PR

3.26.0 (2026-10-06)

Features

• api: add standalone Decisions support (#4033) (b99e3e4)

---

This PR was generated with Release Please. See documentation.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-06T21:12:12.342265Z	14ce825	PR opened
🔒 Security Review	✅ Completed 2026-10-06T21:11:08.439295Z	14ce825	PR opened

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Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.

[openai-sdks]

OkTest Summary

✅ 236/236 SDK tests passed in 8.052s for Python SDK PR #4034.

Test results — 42 files

Test	Result	Time
tests/chat-completions-complex-body.test.ts	✅ Passed	147ms
tests/chat-completions-create.test.ts	✅ Passed	202ms
tests/chat-completions-stream.test.ts	✅ Passed	98ms
tests/files-content-binary.test.ts	✅ Passed	171ms
tests/files-create-multipart.test.ts	✅ Passed	184ms
tests/files-list-pagination.test.ts	✅ Passed	91ms
tests/initialize-config.test.ts	✅ Passed	92ms
tests/instance-isolation.test.ts	✅ Passed	111ms
tests/models-list.test.ts	✅ Passed	92ms
tests/responses-background-lifecycle.test.ts	✅ Passed	124ms
tests/responses-body-method-errors.test.ts	✅ Passed	244ms
tests/responses-cancel-timeout.test.ts	✅ Passed	198ms
tests/responses-cancel.test.ts	✅ Passed	133ms
tests/responses-compact-retries.test.ts	✅ Passed	189ms
tests/responses-compact.test.ts	✅ Passed	150ms
tests/responses-create-advanced-stream.test.ts	✅ Passed	138ms
tests/responses-create-advanced.test.ts	✅ Passed	114ms
tests/responses-create-disconnect.test.ts	✅ Passed	1.225s
tests/responses-create-errors.test.ts	✅ Passed	168ms
tests/responses-create-malformed-api-responses.test.ts	✅ Passed	77ms
tests/responses-create-retries.test.ts	✅ Passed	145ms
tests/responses-create-stream-failures.test.ts	✅ Passed	87ms
tests/responses-create-stream-timeout.test.ts	✅ Passed	204ms
tests/responses-create-stream-wire.test.ts	✅ Passed	2.292s
tests/responses-create-stream.test.ts	✅ Passed	167ms
tests/responses-create-terminal-states.test.ts	✅ Passed	170ms
tests/responses-create-timeout.test.ts	✅ Passed	186ms
tests/responses-create.test.ts	✅ Passed	402ms
tests/responses-delete.test.ts	✅ Passed	149ms
tests/responses-input-items-errors.test.ts	✅ Passed	282ms
tests/responses-input-items-list.test.ts	✅ Passed	201ms
tests/responses-input-items-options.test.ts	✅ Passed	205ms
tests/responses-input-tokens-count-timeout.test.ts	✅ Passed	181ms
tests/responses-input-tokens-count.test.ts	✅ Passed	144ms
tests/responses-malformed-inputs.test.ts	✅ Passed	1.515s
tests/responses-not-found-errors.test.ts	✅ Passed	257ms
tests/responses-parse.test.ts	✅ Passed	119ms
tests/responses-retrieve-retries.test.ts	✅ Passed	154ms
tests/responses-retrieve.test.ts	✅ Passed	147ms
tests/responses-stored-method-errors.test.ts	✅ Passed	435ms
tests/retry-behavior.test.ts	✅ Passed	3.169s
tests/sdk-error-shape.test.ts	✅ Passed	243ms

View OkTest run #37531944185

_{SDK merge (9a2e85fba07d) · head (14ce825e735b) · base (b99e3e4eee03) · OkTest (505ac0e34283)}

[github-actions]

Castiron custom code

Evaluated main: b99e3e4eee03e99eebc2c762eee9d73fdd4b0eff.

✅ No new custom-code files detected.

46 mixed files remain; 0 existing customizations changed.

Compared b99e3e4eee03 → 14ce825e735b. Generated baselines verified.

46 existing customizations unchanged

• api.md
• src/openai/init.py
• src/openai/_client.py
• src/openai/resources/audio/transcriptions.py
• src/openai/resources/audio/translations.py
• src/openai/resources/beta/agents/environments/files.py
• src/openai/resources/beta/agents/sessions/artifacts.py
• src/openai/resources/beta/agents/sessions/sessions.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/live/forks.py
• src/openai/resources/live/live.py
• src/openai/resources/live/sideband.py
• src/openai/resources/realtime/api.md
• 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/beta/agent_session_message.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/realtime/conversation_item_input_audio_transcription_delta_event.py
• src/openai/types/realtime/realtime_error_event.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/responses_client_event.py
• src/openai/types/responses/responses_client_event_param.py
• src/openai/types/responses/tool.py

6 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 37532033532 --repo openai/openai-python \
  --name castiron-custom-code-37532033532-1 --dir /tmp/castiron-custom-code-37532033532-1
git apply --stat /tmp/castiron-custom-code-37532033532-1/custom-code.patch
cat /tmp/castiron-custom-code-37532033532-1/custom-code.patch

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

git fetch --no-tags origin b99e3e4eee03e99eebc2c762eee9d73fdd4b0eff 14ce825e735bb6f43abdca2ff87103e63e66203d
python3 scripts/castiron/custom_code_report.py report \
  --base b99e3e4eee03e99eebc2c762eee9d73fdd4b0eff \
  --head 14ce825e735bb6f43abdca2ff87103e63e66203d --fetch --require-head-hash --public \
  --out /tmp/castiron-custom-code-14ce825e735b
cat /tmp/castiron-custom-code-14ce825e735b/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]

🤖 Created releases:

• v3.26.0

🌻