release: 4.48.0

[stainless-app]

Automated Release PR

4.48.0 (2026-07-31)

Full Changelog: v4.47.0...v4.48.0

Features

• api: content provenance checks (b89a308)
• api: support the fast service tier for response compaction (b89a308)

---

This pull request is managed by Stainless's GitHub App.

The semver version number is based on included commit messages. Alternatively, you can manually set the version number in the title of this pull request.

For a better experience, it is recommended to use either rebase-merge or squash-merge when merging this pull request.

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[openai-sdks]

OkTest Summary

✅ 237/237 SDK tests passed in 17.406s for Java SDK PR #825.

Test results — 42 files

Test	Result	Time
tests/chat-completions-complex-body.test.ts	✅ Passed	261ms
tests/chat-completions-create.test.ts	✅ Passed	794ms
tests/chat-completions-stream.test.ts	✅ Passed	394ms
tests/files-content-binary.test.ts	✅ Passed	283ms
tests/files-create-multipart.test.ts	✅ Passed	272ms
tests/files-list-pagination.test.ts	✅ Passed	280ms
tests/initialize-config.test.ts	✅ Passed	283ms
tests/instance-isolation.test.ts	✅ Passed	235ms
tests/models-list.test.ts	✅ Passed	173ms
tests/responses-background-lifecycle.test.ts	✅ Passed	397ms
tests/responses-body-method-errors.test.ts	✅ Passed	482ms
tests/responses-cancel-timeout.test.ts	✅ Passed	218ms
tests/responses-cancel.test.ts	✅ Passed	410ms
tests/responses-compact-retries.test.ts	✅ Passed	506ms
tests/responses-compact.test.ts	✅ Passed	259ms
tests/responses-create-advanced-stream.test.ts	✅ Passed	770ms
tests/responses-create-advanced.test.ts	✅ Passed	1.231s
tests/responses-create-disconnect.test.ts	✅ Passed	1.149s
tests/responses-create-errors.test.ts	✅ Passed	339ms
tests/responses-create-malformed-api-responses.test.ts	✅ Passed	338ms
tests/responses-create-retries.test.ts	✅ Passed	410ms
tests/responses-create-stream-failures.test.ts	✅ Passed	269ms
tests/responses-create-stream-timeout.test.ts	✅ Passed	238ms
tests/responses-create-stream-wire.test.ts	✅ Passed	6.818s
tests/responses-create-stream.test.ts	✅ Passed	93ms
tests/responses-create-terminal-states.test.ts	✅ Passed	337ms
tests/responses-create-timeout.test.ts	✅ Passed	226ms
tests/responses-create.test.ts	✅ Passed	279ms
tests/responses-delete.test.ts	✅ Passed	253ms
tests/responses-input-items-errors.test.ts	✅ Passed	274ms
tests/responses-input-items-list.test.ts	✅ Passed	310ms
tests/responses-input-items-options.test.ts	✅ Passed	265ms
tests/responses-input-tokens-count-timeout.test.ts	✅ Passed	202ms
tests/responses-input-tokens-count.test.ts	✅ Passed	450ms
tests/responses-malformed-inputs.test.ts	✅ Passed	5.737s
tests/responses-not-found-errors.test.ts	✅ Passed	403ms
tests/responses-parse.test.ts	✅ Passed	816ms
tests/responses-retrieve-retries.test.ts	✅ Passed	1.109s
tests/responses-retrieve.test.ts	✅ Passed	315ms
tests/responses-stored-method-errors.test.ts	✅ Passed	991ms
tests/retry-behavior.test.ts	✅ Passed	3.43s
tests/sdk-error-shape.test.ts	✅ Passed	440ms

View OkTest run #30652715007

_{SDK merge (7cd7d99e60a2) · head (86bd1d6c473c) · base (a52d5d1aec5a) · OkTest (91635c6a2723)}

[HAYDEN-OAI]

Reviewed the generated provenance and FAST-tier changes, 4.48.0 version/changelog, immutable tag/SHA release guards, environment-scoped signing/publishing, GraalVM metadata, and all 16 Maven artifacts. No substantive issues; Maven Central remaining at 4.45.0 reflects the pending guarded 4.46/4.47 recovery publishes.

[stainless-app]

🤖 Release is at https://github.com/openai/openai-java/releases/tag/v4.48.0 🌻