{"slug": "breaking-openai-value-can-now-return-gpt-6-1-terra", "title": "OpenAI: value can now return \"gpt-6.1-terra\"", "summary": "OpenAI added \"gpt-6.1-terra\" as a new value to its BetaModelIdsShared schema, which the change notice says is reachable from 4 operations and affects code reading those objects across 5 OpenAI operations. The addition breaks exhaustive switches, strict parsers and generated client enums, even though producer-side tools call the change additive.", "body_md": "## What changed\n\nProducer-side tools call this additive. It breaks exhaustive switches, strict parsers and generated client enums.\n\nAffects this value on `BetaModelIdsShared` reachable from 4 operations.\n\nNew value: `gpt-6.1-terra`.\n\ncan now return \"gpt-6.1-terra\"\n\n## Who is affected\n\nCode that reads OpenAI's BetaModelIdsShared objects, used by 5 OpenAI operations.\n\n## Before and after\n\n| Where | Before | After | \n|---|---|---|\n| BetaModelIdsShared | \"chatgpt-4o-latest\", \"codex-mini-latest\", \"gpt-3.5-turbo\", \"gpt-3.5-turbo-0125\", \"gpt-3.5-turbo-0301\", \"gpt-3.5-turbo-0613\", \"gpt-3.5-turbo-1106\", \"gpt-3.5-turbo-16k\", \"gpt-3.5-turbo-16k-0613\", \"gpt-4\", \"gpt-4-0125-preview\", \"gpt-4-0314\", \"gpt-4-0613\", \"gpt-4-1106-preview\", \"gpt-4-32k\", \"gpt-4-32k-0314\", \"gpt-4-32k-0613\", \"gpt-4-turbo\", \"gpt-4-turbo-2024-04-09\", \"gpt-4-turbo-preview\", \"gpt-4-vision-preview\", \"gpt-4.1\", \"gpt-4.1-2025-04-14\", \"gpt-4.1-mini\", \"gpt-4.1-mini-2025-04-14\", \"gpt-4.1-nano\", \"gpt-4.1-nano-2025-04-14\", \"gpt-4o\", \"gpt-4o-2024-05-13\", \"gpt-4o-2024-08-06\", \"gpt-4o-2024-11-20\", \"gpt-4o-audio-preview\", \"gpt-4o-audio-preview-2024-10-01\", \"gpt-4o-audio-preview-2024-12-17\", \"gpt-4o-audio-preview-2025-06-03\", \"gpt-4o-mini\", \"gpt-4o-mini-2024-07-18\", \"gpt-4o-mini-audio-preview\", \"gpt-4o-mini-audio-preview-2024-12-17\", \"gpt-4o-mini-search-preview\", \"gpt-4o-mini-search-preview-2025-03-11\", \"gpt-4o-search-preview\", \"gpt-4o-search-preview-2025-03-11\", \"gpt-5\", \"gpt-5-2025-08-07\", \"gpt-5-chat-latest\", \"gpt-5-mini\", \"gpt-5-mini-2025-08-07\", \"gpt-5-nano\", \"gpt-5-nano-2025-08-07\", \"gpt-5.1\", \"gpt-5.1-2025-11-13\", \"gpt-5.1-chat-latest\", \"gpt-5.1-codex\", \"gpt-5.1-mini\", \"gpt-5.2\", \"gpt-5.2-2025-12-11\", \"gpt-5.2-chat-latest\", \"gpt-5.2-pro\", \"gpt-5.2-pro-2025-12-11\", \"gpt-5.3-chat-latest\", \"gpt-5.4\", \"gpt-5.4-mini\", \"gpt-5.4-mini-2026-03-17\", \"gpt-5.4-nano\", \"gpt-5.4-nano-2026-03-17\", \"gpt-5.5\", \"gpt-5.5-2026-04-23\", \"gpt-5.6-luna\", \"gpt-5.6-sol\", \"gpt-5.6-terra\", \"gpt-6-astra\", \"gpt-6-luna\", \"gpt-6-sol\", \"gpt-6.1-sol\", \"gpt-audio-mini\", \"gpt-audio-mini-2025-12-15\", \"o1\", \"o1-2024-12-17\", \"o1-mini\", \"o1-mini-2024-09-12\", \"o1-preview\", \"o1-preview-2024-09-12\", \"o3\", \"o3-2025-04-16\", \"o3-mini\", \"o3-mini-2025-01-31\", \"o4-mini\", \"o4-mini-2025-04-16\" | \"chatgpt-4o-latest\", \"codex-mini-latest\", \"gpt-3.5-turbo\", \"gpt-3.5-turbo-0125\", \"gpt-3.5-turbo-0301\", \"gpt-3.5-turbo-0613\", \"gpt-3.5-turbo-1106\", \"gpt-3.5-turbo-16k\", \"gpt-3.5-turbo-16k-0613\", \"gpt-4\", \"gpt-4-0125-preview\", \"gpt-4-0314\", \"gpt-4-0613\", \"gpt-4-1106-preview\", \"gpt-4-32k\", \"gpt-4-32k-0314\", \"gpt-4-32k-0613\", \"gpt-4-turbo\", \"gpt-4-turbo-2024-04-09\", \"gpt-4-turbo-preview\", \"gpt-4-vision-preview\", \"gpt-4.1\", \"gpt-4.1-2025-04-14\", \"gpt-4.1-mini\", \"gpt-4.1-mini-2025-04-14\", \"gpt-4.1-nano\", \"gpt-4.1-nano-2025-04-14\", \"gpt-4o\", \"gpt-4o-2024-05-13\", \"gpt-4o-2024-08-06\", \"gpt-4o-2024-11-20\", \"gpt-4o-audio-preview\", \"gpt-4o-audio-preview-2024-10-01\", \"gpt-4o-audio-preview-2024-12-17\", \"gpt-4o-audio-preview-2025-06-03\", \"gpt-4o-mini\", \"gpt-4o-mini-2024-07-18\", \"gpt-4o-mini-audio-preview\", \"gpt-4o-mini-audio-preview-2024-12-17\", \"gpt-4o-mini-search-preview\", \"gpt-4o-mini-search-preview-2025-03-11\", \"gpt-4o-search-preview\", \"gpt-4o-search-preview-2025-03-11\", \"gpt-5\", \"gpt-5-2025-08-07\", \"gpt-5-chat-latest\", \"gpt-5-mini\", \"gpt-5-mini-2025-08-07\", \"gpt-5-nano\", \"gpt-5-nano-2025-08-07\", \"gpt-5.1\", \"gpt-5.1-2025-11-13\", \"gpt-5.1-chat-latest\", \"gpt-5.1-codex\", \"gpt-5.1-mini\", \"gpt-5.2\", \"gpt-5.2-2025-12-11\", \"gpt-5.2-chat-latest\", \"gpt-5.2-pro\", \"gpt-5.2-pro-2025-12-11\", \"gpt-5.3-chat-latest\", \"gpt-5.4\", \"gpt-5.4-mini\", \"gpt-5.4-mini-2026-03-17\", \"gpt-5.4-nano\", \"gpt-5.4-nano-2026-03-17\", \"gpt-5.5\", \"gpt-5.5-2026-04-23\", \"gpt-5.6-luna\", \"gpt-5.6-sol\", \"gpt-5.6-terra\", \"gpt-6-astra\", \"gpt-6-luna\", \"gpt-6-sol\", \"gpt-6.1-sol\", \"gpt-6.1-terra\", \"gpt-audio-mini\", \"gpt-audio-mini-2025-12-15\", \"o1\", \"o1-2024-12-17\", \"o1-mini\", \"o1-mini-2024-09-12\", \"o1-preview\", \"o1-preview-2024-09-12\", \"o3\", \"o3-2025-04-16\", \"o3-mini\", \"o3-mini-2025-01-31\", \"o4-mini\", \"o4-mini-2025-04-16\" | \n| ModelIdsShared | \"chatgpt-4o-latest\", \"codex-mini-latest\", \"gpt-3.5-turbo\", \"gpt-3.5-turbo-0125\", \"gpt-3.5-turbo-0301\", \"gpt-3.5-turbo-0613\", \"gpt-3.5-turbo-1106\", \"gpt-3.5-turbo-16k\", \"gpt-3.5-turbo-16k-0613\", \"gpt-4\", \"gpt-4-0125-preview\", \"gpt-4-0314\", \"gpt-4-0613\", \"gpt-4-1106-preview\", \"gpt-4-32k\", \"gpt-4-32k-0314\", \"gpt-4-32k-0613\", \"gpt-4-turbo\", \"gpt-4-turbo-2024-04-09\", \"gpt-4-turbo-preview\", \"gpt-4-vision-preview\", \"gpt-4.1\", \"gpt-4.1-2025-04-14\", \"gpt-4.1-mini\", \"gpt-4.1-mini-2025-04-14\", \"gpt-4.1-nano\", \"gpt-4.1-nano-2025-04-14\", \"gpt-4o\", \"gpt-4o-2024-05-13\", \"gpt-4o-2024-08-06\", \"gpt-4o-2024-11-20\", \"gpt-4o-audio-preview\", \"gpt-4o-audio-preview-2024-10-01\", \"gpt-4o-audio-preview-2024-12-17\", \"gpt-4o-audio-preview-2025-06-03\", \"gpt-4o-mini\", \"gpt-4o-mini-2024-07-18\", \"gpt-4o-mini-audio-preview\", \"gpt-4o-mini-audio-preview-2024-12-17\", \"gpt-4o-mini-search-preview\", \"gpt-4o-mini-search-preview-2025-03-11\", \"gpt-4o-search-preview\", \"gpt-4o-search-preview-2025-03-11\", \"gpt-5\", \"gpt-5-2025-08-07\", \"gpt-5-chat-latest\", \"gpt-5-mini\", \"gpt-5-mini-2025-08-07\", \"gpt-5-nano\", \"gpt-5-nano-2025-08-07\", \"gpt-5.1\", \"gpt-5.1-2025-11-13\", \"gpt-5.1-chat-latest\", \"gpt-5.1-codex\", \"gpt-5.1-mini\", \"gpt-5.2\", \"gpt-5.2-2025-12-11\", \"gpt-5.2-chat-latest\", \"gpt-5.2-pro\", \"gpt-5.2-pro-2025-12-11\", \"gpt-5.3-chat-latest\", \"gpt-5.4\", \"gpt-5.4-mini\", \"gpt-5.4-mini-2026-03-17\", \"gpt-5.4-nano\", \"gpt-5.4-nano-2026-03-17\", \"gpt-5.5\", \"gpt-5.5-2026-04-23\", \"gpt-5.6-luna\", \"gpt-5.6-sol\", \"gpt-5.6-terra\", \"gpt-6-astra\", \"gpt-6-luna\", \"gpt-6-sol\", \"gpt-6.1-sol\", \"gpt-audio-mini\", \"gpt-audio-mini-2025-12-15\", \"o1\", \"o1-2024-12-17\", \"o1-mini\", \"o1-mini-2024-09-12\", \"o1-preview\", \"o1-preview-2024-09-12\", \"o3\", \"o3-2025-04-16\", \"o3-mini\", \"o3-mini-2025-01-31\", \"o4-mini\", \"o4-mini-2025-04-16\" | \"chatgpt-4o-latest\", \"codex-mini-latest\", \"gpt-3.5-turbo\", \"gpt-3.5-turbo-0125\", \"gpt-3.5-turbo-0301\", \"gpt-3.5-turbo-0613\", \"gpt-3.5-turbo-1106\", \"gpt-3.5-turbo-16k\", \"gpt-3.5-turbo-16k-0613\", \"gpt-4\", \"gpt-4-0125-preview\", \"gpt-4-0314\", \"gpt-4-0613\", \"gpt-4-1106-preview\", \"gpt-4-32k\", \"gpt-4-32k-0314\", \"gpt-4-32k-0613\", \"gpt-4-turbo\", \"gpt-4-turbo-2024-04-09\", \"gpt-4-turbo-preview\", \"gpt-4-vision-preview\", \"gpt-4.1\", \"gpt-4.1-2025-04-14\", \"gpt-4.1-mini\", \"gpt-4.1-mini-2025-04-14\", \"gpt-4.1-nano\", \"gpt-4.1-nano-2025-04-14\", \"gpt-4o\", \"gpt-4o-2024-05-13\", \"gpt-4o-2024-08-06\", \"gpt-4o-2024-11-20\", \"gpt-4o-audio-preview\", \"gpt-4o-audio-preview-2024-10-01\", \"gpt-4o-audio-preview-2024-12-17\", \"gpt-4o-audio-preview-2025-06-03\", \"gpt-4o-mini\", \"gpt-4o-mini-2024-07-18\", \"gpt-4o-mini-audio-preview\", \"gpt-4o-mini-audio-preview-2024-12-17\", \"gpt-4o-mini-search-preview\", \"gpt-4o-mini-search-preview-2025-03-11\", \"gpt-4o-search-preview\", \"gpt-4o-search-preview-2025-03-11\", \"gpt-5\", \"gpt-5-2025-08-07\", \"gpt-5-chat-latest\", \"gpt-5-mini\", \"gpt-5-mini-2025-08-07\", \"gpt-5-nano\", \"gpt-5-nano-2025-08-07\", \"gpt-5.1\", \"gpt-5.1-2025-11-13\", \"gpt-5.1-chat-latest\", \"gpt-5.1-codex\", \"gpt-5.1-mini\", \"gpt-5.2\", \"gpt-5.2-2025-12-11\", \"gpt-5.2-chat-latest\", \"gpt-5.2-pro\", \"gpt-5.2-pro-2025-12-11\", \"gpt-5.3-chat-latest\", \"gpt-5.4\", \"gpt-5.4-mini\", \"gpt-5.4-mini-2026-03-17\", \"gpt-5.4-nano\", \"gpt-5.4-nano-2026-03-17\", \"gpt-5.5\", \"gpt-5.5-2026-04-23\", \"gpt-5.6-luna\", \"gpt-5.6-sol\", \"gpt-5.6-terra\", \"gpt-6-astra\", \"gpt-6-luna\", \"gpt-6-sol\", \"gpt-6.1-sol\", \"gpt-6.1-terra\", \"gpt-audio-mini\", \"gpt-audio-mini-2025-12-15\", \"o1\", \"o1-2024-12-17\", \"o1-mini\", \"o1-mini-2024-09-12\", \"o1-preview\", \"o1-preview-2024-09-12\", \"o3\", \"o3-2025-04-16\", \"o3-mini\", \"o3-mini-2025-01-31\", \"o4-mini\", \"o4-mini-2025-04-16\" | \n\n## Code that breaks\n\n```\nswitch (response) {\n  // existing branches …\n  // no branch for \"gpt-6.1-terra\"\n  default:\n    throw new Error(\"unexpected value\");\n}\n```\n\nBased on OpenAI’s published API specification. [How severity is decided](https://driftwatch.et/method).", "url": "https://wpnews.pro/news/breaking-openai-value-can-now-return-gpt-6-1-terra", "canonical_source": "https://driftwatch.et/changes/openai-2026-10-26-a9965108", "published_at": "2026-10-26 18:14:44+00:00", "updated_at": "2026-10-26 23:13:49.426325+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-products", "developer-tools"], "entities": ["OpenAI", "BetaModelIdsShared", "gpt-6.1-terra"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/breaking-openai-value-can-now-return-gpt-6-1-terra", "markdown": "https://wpnews.pro/news/breaking-openai-value-can-now-return-gpt-6-1-terra.md", "text": "https://wpnews.pro/news/breaking-openai-value-can-now-return-gpt-6-1-terra.txt", "jsonld": "https://wpnews.pro/news/breaking-openai-value-can-now-return-gpt-6-1-terra.jsonld"}}