3.89.0 (2026-10-27)

Features

• api: add prompt cache breakpoint TTL options (#1162) (51a5817)

Bug Fixes

• api: isolate decoded null collections (#1159) (898671b)
• api: preserve existing response and decision input behavior (#1158) (0bd7238)

Chores

• api: alphabetize the shared type index (#1163) (d32fa05)
• enforce strict generated-file ownership (#1165) (2bd28ff)
• set custom-code budget to zero (#1164) (9d77839)

Build System

• deps: bump actions/create-github-app-token from 3.2.0 to 3.3.0 (#1139) (67bcaaf)
• deps: bump actions/download-artifact from 8.0.1 to 8.0.2 (#1101) (b2b294f)
• deps: bump actions/setup-node from 7.0.0 to 7.1.0 (#1102) (c3a3c9a)
• deps: bump actions/upload-artifact from 7.0.1 to 7.0.2 (#1100) (17caf9b)
• deps: bump github.com/aws/aws-sdk-go-v2/config in / (#1098) (e8374d1)
• deps: bump the codeql group across 1 directory with 2 updates (#1099) (a97ac6d)

3.88.0 (2026-10-26)

Features

• api: add gpt-6.1-terra model identifier (#1157) (b5e1cc9)

3.87.0 (2026-10-23)

Features

• api: add delegation controls and prompt cache lifetimes (#1150) (cd6966a)

1.0.1 (2026-10-26)

Build System

• deps: bump cloud.google.com/go/auth from 0.16.5 to 0.24.1 in /v3/vertex (#1140) (3760c9f)

3.86.0 (2026-10-23)

Features

• api: Breaking change in a minor release. Decisions and Live question Instructions fields now use typed unions to support a string or a list of text, image, or JSON parts. Existing Go code that assigns a string directly, such as Instructions: "check", no longer compiles; wrap it in the field’s union type, for example Instructions: openai.DecisionNewParamsQuestionPredicateInstructionsUnion{OfString: openai.String("check")}. For Live responses, check question.Instructions.JSON.OfString.Valid() before reading question.Instructions.OfString, and handle question.Instructions.OfArrayOfDecisionQuestionInputPartUnion for the list case. Decisions request inputs also support additional message roles and tool-history items; update code that assumes it knows every input type. String instructions remain supported through the union, and the existing DecisionInputMessageParam user-message input form still works. (#1147) (bc63762)

Chores

• align generated SDK maintenance tooling (#1146) (bcb69a7)

3.85.1 (2026-10-22)

Bug Fixes

• api: respect each WebSocket authentication attempt timeout (#1142) (e7c9fe9)

Chores

• api: clarify service-account API key deletion (#1144) (58b1902)

3.85.0 (2026-10-21)

Features

• add Vertex AI support for the Responses API (#1138) (7f77340)

3.84.1 (2026-10-21)

Bug Fixes

• auth: avoid a race in X.509 HTTP/2 transport revalidation (#1128) (61e5e17)
• responses: release failed WebSocket restoration on unwind (#1120) (bd4c06f)

Chores

• api: clarify cache-write token totals (#1134) (75abc91)
• api: maintain voice consent compatibility (#1136) (bffdaf6)

3.84.0 (2026-10-21)

Features

• api: add custom voice consent management (#1133) (d012874)

Bug Fixes

• api: preserve decoded request body fields (#1131) (80fc344)
• auth: honor shared issuer retry delay before takeover (#1130) (194d75f)
• auth: retry invalidated bearer followers immediately (#1132) (dd6cda6)
• responses: preserve network policy parameter alias (#1126) (6eebb4d)

1.0.0 (2026-10-21)

Features

• add Vertex AI support for the Responses API (#1138) (7f77340)