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fix(api): preserve audio formats and diarized transcription types - #3920

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castiron/promotions/pr-121
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castiron/promotions/pr-121

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@markstuart-oai

@markstuart-oai markstuart-oai commented Sep 21, 2026

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Summary

Preserves complete audio responses, sends structured chunking strategies correctly, and narrows async diarized transcription return types.

Changes

  • Returns the diarized transcription type for literal nonstreaming async diarized_json calls while preserving broad and streaming overloads.
  • Encodes structured transcription chunking strategies as one JSON-text form field after extra_body overrides, preserving zero, auto, null, omission and caller-owned inputs.
  • Describes plaintext/subtitle transcription and translation responses, six speech media types and audio error responses while preserving JSON, event streams and generic binary compatibility.

Related reports: transcription plaintext media, speech media types, and overlapping transcription response shapes.

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github-actions Bot commented Sep 21, 2026

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Castiron custom code

✅ No new custom-code files detected.

47 mixed files remain; 0 existing customizations changed; 2 generated baselines changed.

Compared 69a2c1db6fea60aed096148b. Generated baselines verified.

File Result Current custom patch
api.md Generated baseline changed +119 / −0
src/openai/resources/audio/transcriptions.py Generated baseline changed +186 / −53
45 existing customizations unchanged
  • 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/translations.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
  • src/openai/types/responses/tool_param.py

5 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 35567292918 --repo openai/openai-python \
  --name castiron-custom-code-35567292918-1 --dir /tmp/castiron-custom-code-35567292918-1
git apply --stat /tmp/castiron-custom-code-35567292918-1/custom-code.patch
cat /tmp/castiron-custom-code-35567292918-1/custom-code.patch

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

git fetch --no-tags origin 69a2c1db6feacf32be6693809e7cab1c3b49cad7 60aed096148bdc1527a1d1c0e0f3ca61842f28f4
python3 scripts/castiron/custom_code_report.py report \
  --base 69a2c1db6feacf32be6693809e7cab1c3b49cad7 \
  --head 60aed096148bdc1527a1d1c0e0f3ca61842f28f4 --fetch --require-head-hash --public \
  --out /tmp/castiron-custom-code-60aed096148b
cat /tmp/castiron-custom-code-60aed096148b/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

Comment thread scripts/utils/validate-httpx2-wheel.py Fixed
@markstuart-oai
markstuart-oai force-pushed the castiron/promotions/pr-121 branch from fbb34fe to 287414a Compare September 21, 2026 02:04
@markstuart-oai
markstuart-oai marked this pull request as ready for review September 21, 2026 02:09
@markstuart-oai
markstuart-oai requested a review from a team as a code owner September 21, 2026 02:09
@markstuart-oai

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chatgpt-codex-connector Bot commented Sep 21, 2026

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Codex Review Summary

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

Review Status Commit Review trigger
📝 Code Review Completed 2026-09-21T06:11:42.105745Z 60aed09 New commits
🔒 Security Review Completed 2026-09-21T06:11:26.727055Z 60aed09 New commits
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@openai-sdks

openai-sdks Bot commented Sep 21, 2026

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OkTest Summary

236/236 SDK tests passed in 9.035s for Python SDK PR #3920.

Test results — 42 files
Test Result Time
tests/chat-completions-complex-body.test.ts ✅ Passed 138ms
tests/chat-completions-create.test.ts ✅ Passed 176ms
tests/chat-completions-stream.test.ts ✅ Passed 125ms
tests/files-content-binary.test.ts ✅ Passed 154ms
tests/files-create-multipart.test.ts ✅ Passed 204ms
tests/files-list-pagination.test.ts ✅ Passed 124ms
tests/initialize-config.test.ts ✅ Passed 160ms
tests/instance-isolation.test.ts ✅ Passed 125ms
tests/models-list.test.ts ✅ Passed 189ms
tests/responses-background-lifecycle.test.ts ✅ Passed 137ms
tests/responses-body-method-errors.test.ts ✅ Passed 264ms
tests/responses-cancel-timeout.test.ts ✅ Passed 210ms
tests/responses-cancel.test.ts ✅ Passed 164ms
tests/responses-compact-retries.test.ts ✅ Passed 230ms
tests/responses-compact.test.ts ✅ Passed 143ms
tests/responses-create-advanced-stream.test.ts ✅ Passed 259ms
tests/responses-create-advanced.test.ts ✅ Passed 182ms
tests/responses-create-disconnect.test.ts ✅ Passed 1.177s
tests/responses-create-errors.test.ts ✅ Passed 164ms
tests/responses-create-malformed-api-responses.test.ts ✅ Passed 95ms
tests/responses-create-retries.test.ts ✅ Passed 403ms
tests/responses-create-stream-failures.test.ts ✅ Passed 111ms
tests/responses-create-stream-timeout.test.ts ✅ Passed 206ms
tests/responses-create-stream-wire.test.ts ✅ Passed 2.553s
tests/responses-create-stream.test.ts ✅ Passed 75ms
tests/responses-create-terminal-states.test.ts ✅ Passed 259ms
tests/responses-create-timeout.test.ts ✅ Passed 205ms
tests/responses-create.test.ts ✅ Passed 293ms
tests/responses-delete.test.ts ✅ Passed 206ms
tests/responses-input-items-errors.test.ts ✅ Passed 317ms
tests/responses-input-items-list.test.ts ✅ Passed 240ms
tests/responses-input-items-options.test.ts ✅ Passed 274ms
tests/responses-input-tokens-count-timeout.test.ts ✅ Passed 211ms
tests/responses-input-tokens-count.test.ts ✅ Passed 196ms
tests/responses-malformed-inputs.test.ts ✅ Passed 1.806s
tests/responses-not-found-errors.test.ts ✅ Passed 205ms
tests/responses-parse.test.ts ✅ Passed 218ms
tests/responses-retrieve-retries.test.ts ✅ Passed 199ms
tests/responses-retrieve.test.ts ✅ Passed 171ms
tests/responses-stored-method-errors.test.ts ✅ Passed 494ms
tests/retry-behavior.test.ts ✅ Passed 3.186s
tests/sdk-error-shape.test.ts ✅ Passed 219ms

View OkTest run #35567165678

SDK merge (c6a8e777688b) · head (60aed096148b) · base (69a2c1db6fea) · OkTest (a0be4375e02d)

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Codex Review: Didn't find any major issues. Keep them coming!

Reviewed commit: 287414aceb

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🛡️ Codex Security Review · Automatically triggered

Security review completed. No security issues were found in this pull request.

Reviewed commit: 287414aceb

View security finding report

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  • A regular code review gets triggered (for example, "@codex review" or when a PR is opened), and you’re opted in so security review runs alongside code review

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Castiron-Internal-PR: openai/openai-python-internal#121
Castiron-Source-SHA: f1cabf8850274ebf78d553df3bc1c5b11b7bebb4
Castiron-Public-Base-SHA: 69a2c1d
@markstuart-oai
markstuart-oai force-pushed the castiron/promotions/pr-121 branch from 287414a to 60aed09 Compare September 21, 2026 06:08
@markstuart-oai markstuart-oai changed the title fix(api): serialize transcription chunking strategy fix(api): preserve audio formats and diarized transcription types Sep 21, 2026
Comment thread src/openai/resources/audio/transcriptions.py
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