{"schema_version":"kingy-change-evidence-v1","event":{"id":"ct-7535e8cc7a87fbd87b345b05","vendor":"OpenAI","category":"changelog","type":"documented_source_change","title":"OpenAI API changelog documentation changed","source_id":"openai-changelog","source_url":"https://developers.openai.com/api/docs/changelog.md","observed_at":"2026-10-08T18:25:07Z","last_unchanged_at":"2026-10-08T16:20:08Z","before_snapshot":"snap-9c342eb98b25572d9cf109c56198","after_snapshot":"snap-b3fe239126e3255467ba8126e614","before_hash":"46dad3dc35997531c82e28b88f6df29419002ff90ef46afdfd172a266f10c5d9","after_hash":"8227aaf06b87ca643723b21d02024597a1a208e9cd8395a44f76f342ae77d487","before_excerpt":"","after_excerpt":"### Oct 8 Feature · Model: gpt-6.1-sol · API: v1/responses Added [Ultrafast mode](https://developers.openai.com/api/docs/guides/ultrafast-mode) for [GPT-6.1 Sol](https://developers.openai.com/api/docs/models/gpt-6.1-sol) in the Responses API. Use `gpt-6.1-sol` with `service_tier: \"ultrafast\"` to reduce the time between generated output tokens. It is available to all API users, subject to rate limits, with global processing and US and EU data residency. See [Ultrafast pricing](https://developers.openai.com/api/docs/pricing?latest-pricing=ultrafast).","status":"published","scope":"Published documentation; runtime behavior and legal interpretation not established.","before_capture":{"http_status":304,"resolved_url":"https://developers.openai.com/api/docs/changelog.md","etag":"\"58c8054930a4f0c8ff1cb4b1c2ad85f6\"","last_modified":"Wed, 07 Oct 2026 19:16:35 GMT","source_id":"openai-changelog","source_url":"https://developers.openai.com/api/docs/changelog.md","captured_at":"2026-10-08T16:20:08Z","raw_sha256":"46dad3dc35997531c82e28b88f6df29419002ff90ef46afdfd172a266f10c5d9","normalized_sha256":"7f3e3065bcd9faec96a048714463cf2722ee09865e273754ee1c63ad1e81e347","collector_version":"1.0.0","normalizer_version":"1.1","locale":"en-US","collection_region":"existing hosting; account-independent public request","id":"snap-9c342eb98b25572d9cf109c56198"},"after_capture":{"http_status":200,"resolved_url":"https://developers.openai.com/api/docs/changelog.md","etag":"\"0fd269d9865175e30ca370823ff76589\"","last_modified":"Thu, 08 Oct 2026 18:09:20 GMT","response_date":"Thu, 08 Oct 2026 18:25:07 GMT","source_id":"openai-changelog","source_url":"https://developers.openai.com/api/docs/changelog.md","captured_at":"2026-10-08T18:25:07Z","raw_sha256":"8227aaf06b87ca643723b21d02024597a1a208e9cd8395a44f76f342ae77d487","normalized_sha256":"3f05d3959fbb33a1dbd9c5c371692246a1103a2469075b78ce8e7a14c6611abe","collector_version":"1.0.0","normalizer_version":"1.1","locale":"en-US","collection_region":"existing hosting; account-independent public request","id":"snap-b3fe239126e3255467ba8126e614"},"display_normalizer_version":"1.1","display_before_sha256":"7f3e3065bcd9faec96a048714463cf2722ee09865e273754ee1c63ad1e81e347","display_after_sha256":"3f05d3959fbb33a1dbd9c5c371692246a1103a2469075b78ce8e7a14c6611abe"},"content_scope":"Changed excerpts and retained capture metadata; complete raw responses archived privately"}