release: 3.31.0

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Automated Release PR

3.31.0 (2026-04-08)

Full Changelog: v3.30.0...v3.31.0

Features

• api: add phase field to conversation messages (563d747)
• api: add web_search_call.results to ResponseIncludable (6ef5b20)
• client: add support for short-lived tokens (#799) (038871e)
• internal: support comma format in multipart form encoding (905b473)

Bug Fixes

• fix issue with unmarshaling in some cases (a017bc6)
• prevent duplicate ? in query params (cbb2c75)
• types: remove web_search_call.results from ResponseIncludable (180597f)

Chores

• ci: support opting out of skipping builds on metadata-only commits (12e3a5a)
• remove unnecessary error check for url parsing (cfe9c41)
• tests: bump steady to v0.20.1 (8e4ef11)
• tests: bump steady to v0.20.2 (ad31f81)
• update docs for api:"required" (2d16ebc)

Documentation

• api: add multi-file ingestion guidance to vectorstorefile/filebatch params (dbba33f)

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🤖 Release is at https://github.com/openai/openai-[go/releases/tag/v3.31.0](https://www.golinks.io/releases/tag/v3.31.0?trackSource=github) 🌻