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Shutdowns and retirements

Announced shutdowns

DateForWhatTypeSource
Nov 30, 2026Claude Sonnet 4.5Claude Sonnet 4.5 (claude-sonnet-4-5-20250929) retires; Anthropic names Claude Sonnet 5.5 as the replacementDeprecationclaude.com
Dec 1, 2026Gemini 2.5 Flashgemini-2.5-flash requests route to Gemini 3.5 Flash-LiteDeprecationgoogle.dev
Dec 1, 2026Gemini 2.5 Progemini-2.5-pro requests route to Gemini 3.8 FlashDeprecationgoogle.dev
Dec 3, 2026Gemini Omni 1.1 Flashgemini-omni-1.1-flash requests route to Gemini Omni 1.2 FlashDeprecationgoogle.dev
Feb 26, 2027GPT-4o Mini Transcribegpt-4o-mini-transcribe shuts down; OpenAI names gpt-live-transcribe or gpt-transcribe as the replacementDeprecationopenai.com
Feb 26, 2027GPT-4o Transcribegpt-4o-transcribe shuts down; OpenAI names gpt-live-transcribe or gpt-transcribe as the replacementDeprecationopenai.com
Mar 15, 2027Nano BananaNano Banana (gemini-2.5-flash-image) shuts downDeprecationgoogle.dev
May 7, 2027Gemini 3.1 Flash-Litegemini-3.1-flash-lite shuts down; Google names gemini-3.5-flash-lite as the replacementDeprecationgoogle.dev

Earliest retirement dates

DateForWhatTypeSource
Nov 24, 2026Claude Opus 4.5Claude Opus 4.5: earliest retirement Anthropic commits toNot sooner thanclaude.com
Feb 5, 2027Claude Opus 4.6Claude Opus 4.6: earliest retirement Anthropic commits toNot sooner thanclaude.com
Feb 17, 2027Claude Sonnet 4.6Claude Sonnet 4.6: earliest retirement Anthropic commits toNot sooner thanclaude.com
Apr 16, 2027Claude Opus 4.7Claude Opus 4.7: earliest retirement Anthropic commits toNot sooner thanclaude.com
May 28, 2027Claude Opus 4.8Claude Opus 4.8: earliest retirement Anthropic commits toNot sooner thanclaude.com
Jun 9, 2027Claude Fable 5Claude Fable 5: earliest retirement Anthropic commits toNot sooner thanclaude.com
Jun 9, 2027Claude Mythos 5Claude Mythos 5: earliest retirement Anthropic commits toNot sooner thanclaude.com
Jun 30, 2027Claude Sonnet 5Claude Sonnet 5: earliest retirement Anthropic commits toNot sooner thanclaude.com
Jul 24, 2027Claude Opus 5Claude Opus 5: earliest retirement Anthropic commits toNot sooner thanclaude.com
Sep 1, 2027Claude Fable 5.1Claude Fable 5.1: earliest retirement Anthropic commits toNot sooner thanclaude.com
Sep 1, 2027Claude Mythos 5.1Claude Mythos 5.1: earliest retirement Anthropic commits toNot sooner thanclaude.com
Sep 22, 2027Claude Opus 5.5Claude Opus 5.5: earliest retirement Anthropic commits toNot sooner thanclaude.com
Sep 28, 2027Claude Sonnet 5.5Claude Sonnet 5.5: earliest retirement Anthropic commits toNot sooner thanclaude.com
Oct 7, 2027Claude Haiku 5.5Claude Haiku 5.5: earliest retirement Anthropic commits toNot sooner thanclaude.com
Nov 9, 2027Claude Fable 5.2Claude Fable 5.2: earliest retirement Anthropic commits toNot sooner thanclaude.com
Nov 9, 2027Claude Mythos 5.2Claude Mythos 5.2: earliest retirement Anthropic commits toNot sooner thanclaude.com

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Which AI models are being shut down

Nov 30, 2026: Claude Sonnet 4.5 (claude-sonnet-4-5-20250929) retires; Anthropic names Claude Sonnet 5.5 as the replacement. Dec 1, 2026: gemini-2.5-flash requests route to Gemini 3.5 Flash-Lite. Dec 1, 2026: gemini-2.5-pro requests route to Gemini 3.8 Flash. Dec 3, 2026: gemini-omni-1.1-flash requests route to Gemini Omni 1.2 Flash. Feb 26, 2027: gpt-4o-mini-transcribe shuts down; OpenAI names gpt-live-transcribe or gpt-transcribe as the replacement. Feb 26, 2027: gpt-4o-transcribe shuts down; OpenAI names gpt-live-transcribe or gpt-transcribe as the replacement. Mar 15, 2027: Nano Banana (gemini-2.5-flash-image) shuts down. May 7, 2027: gemini-3.1-flash-lite shuts down; Google names gemini-3.5-flash-lite as the replacement.