--- title: "What Changed Since Each AI Model Was Trained | Since.dev" description: "Every AI model stops reading on a date. For each model: its knowledge cutoff, and what has been retired, deprecated or broken since." canonical_url: https://since.dev/since last_updated: 2026-11-14 --- # What changed since each AI model was trained Every AI model stops reading on a date. After it, model IDs are retired, runtimes reach end of life and packages ship breaking changes the model has never seen, and it still writes the old ones. Pick a model to see what it cannot know. 96 models ## Anthropic - [Claude Fable 5.2](https://since.dev/since/claude-fable-5-2.md) Trained to June 2026. Since then: 239 endings, 146,109 breaking changes in packages - [Claude Haiku 5.5](https://since.dev/since/claude-haiku-5-5.md) Trained to June 2026. Since then: 239 endings, 146,109 breaking changes in packages - [Claude Sonnet 5.5](https://since.dev/since/claude-sonnet-5-5.md) Trained to June 2026. Since then: 239 endings, 146,109 breaking changes in packages - [Claude Opus 5.5](https://since.dev/since/claude-opus-5-5.md) Trained to June 2026. Since then: 239 endings, 146,109 breaking changes in packages - [Claude Fable 5.1](https://since.dev/since/claude-fable-5-1.md) Trained to June 2026. Since then: 239 endings, 146,109 breaking changes in packages - [Claude Opus 5](https://since.dev/since/claude-opus-5.md) Trained to May 2026. Since then: 301 endings, 168,391 breaking changes in packages - [Claude Sonnet 5](https://since.dev/since/claude-sonnet-5.md) Trained to January 31, 2026. Since then: 413 endings, 219,838 breaking changes in packages - [Claude Opus 4.8](https://since.dev/since/claude-opus-4-8.md) Trained to January 2026. Since then: 413 endings, 219,838 breaking changes in packages - [Claude Opus 4.7](https://since.dev/since/claude-opus-4-7.md) Trained to January 31, 2026. Since then: 413 endings, 219,838 breaking changes in packages - [Claude Sonnet 4.6](https://since.dev/since/claude-sonnet-4-6.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [Claude Sonnet 4.5 (latest)](https://since.dev/since/claude-sonnet-4-5.md) Trained to July 31, 2025. Since then: 559 endings, 279,506 breaking changes in packages - [Claude Sonnet 4.5](https://since.dev/since/claude-sonnet-4-5-20250929.md) Trained to July 31, 2025. Since then: 559 endings, 279,506 breaking changes in packages - [Claude Opus 4.6](https://since.dev/since/claude-opus-4-6.md) Trained to May 31, 2025. Since then: 602 endings, 300,605 breaking changes in packages - [Claude Opus 4.5 (latest)](https://since.dev/since/claude-opus-4-5.md) Trained to May 2025. Since then: 602 endings, 300,605 breaking changes in packages - [Claude Opus 4.5](https://since.dev/since/claude-opus-4-5-20251101.md) Trained to May 2025. Since then: 602 endings, 300,605 breaking changes in packages - [Claude Haiku 4.5 (latest)](https://since.dev/since/claude-haiku-4-5.md) Trained to February 28, 2025. Since then: 672 endings, 318,838 breaking changes in packages - [Claude Haiku 4.5](https://since.dev/since/claude-haiku-4-5-20251001.md) Trained to February 28, 2025. Since then: 672 endings, 318,838 breaking changes in packages ## OpenAI - [GPT-6.1 Terra](https://since.dev/since/gpt-6.1-terra.md) Trained to June 1, 2026. Since then: 293 endings, 167,756 breaking changes in packages - [GPT-6 Luna](https://since.dev/since/gpt-6-luna.md) Trained to May 18, 2026. Since then: 318 endings, 174,020 breaking changes in packages - [GPT-6.1 Sol](https://since.dev/since/gpt-6.1-sol.md) Trained to April 30, 2026. Since then: 346 endings, 180,663 breaking changes in packages - [GPT-6 Astra](https://since.dev/since/gpt-6-astra.md) Trained to April 30, 2026. Since then: 346 endings, 180,663 breaking changes in packages - [GPT-6 Sol](https://since.dev/since/gpt-6-sol.md) Trained to April 20, 2026. Since then: 357 endings, 186,402 breaking changes in packages - [Daybreak Blue](https://since.dev/since/gpt-daybreak-blue-latest.md) Trained to February 16, 2026. Since then: 403 endings, 214,296 breaking changes in packages - [Daybreak Red](https://since.dev/since/gpt-daybreak-red-latest.md) Trained to February 16, 2026. Since then: 403 endings, 214,296 breaking changes in packages - [GPT-5.6](https://since.dev/since/gpt-5.6.md) Trained to February 16, 2026. Since then: 403 endings, 214,296 breaking changes in packages - [GPT-5.6 Luna](https://since.dev/since/gpt-5.6-luna.md) Trained to February 16, 2026. Since then: 403 endings, 214,296 breaking changes in packages - [GPT-5.6 Sol](https://since.dev/since/gpt-5.6-sol.md) Trained to February 16, 2026. Since then: 403 endings, 214,296 breaking changes in packages - [GPT-5.6 Terra](https://since.dev/since/gpt-5.6-terra.md) Trained to February 16, 2026. Since then: 403 endings, 214,296 breaking changes in packages - [GPT-5.5](https://since.dev/since/gpt-5.5.md) Trained to December 1, 2025. Since then: 454 endings, 247,714 breaking changes in packages - [GPT-5.5 Pro](https://since.dev/since/gpt-5.5-pro.md) Trained to December 1, 2025. Since then: 454 endings, 247,714 breaking changes in packages - [GPT-5.4 mini](https://since.dev/since/gpt-5.4-mini.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [GPT-5.4 nano](https://since.dev/since/gpt-5.4-nano.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [GPT-5.4](https://since.dev/since/gpt-5.4.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [GPT-5.4 Pro](https://since.dev/since/gpt-5.4-pro.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [GPT-5.3 Codex](https://since.dev/since/gpt-5.3-codex.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [GPT-5.3 Codex Spark](https://since.dev/since/gpt-5.3-codex-spark.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [GPT-5.2](https://since.dev/since/gpt-5.2.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [GPT-5.2 Pro](https://since.dev/since/gpt-5.2-pro.md) Trained to August 31, 2025. Since then: 545 endings, 275,568 breaking changes in packages - [GPT-Realtime-2.1](https://since.dev/since/gpt-realtime-2.1.md) Trained to September 30, 2024. Since then: 770 endings, 351,186 breaking changes in packages - [GPT-5.1](https://since.dev/since/gpt-5.1.md) Trained to September 30, 2024. Since then: 770 endings, 351,186 breaking changes in packages - [GPT-5 Pro](https://since.dev/since/gpt-5-pro.md) Trained to September 30, 2024. Since then: 770 endings, 351,186 breaking changes in packages - [GPT-5](https://since.dev/since/gpt-5.md) Trained to September 30, 2024. Since then: 770 endings, 351,186 breaking changes in packages - [o3-pro](https://since.dev/since/o3-pro.md) Trained to May 2024. Since then: 843 endings, 367,598 breaking changes in packages - [o3](https://since.dev/since/o3.md) Trained to May 2024. Since then: 843 endings, 367,598 breaking changes in packages - [GPT-5 Mini](https://since.dev/since/gpt-5-mini.md) Trained to May 30, 2024. Since then: 844 endings, 367,618 breaking changes in packages - [GPT-5 Nano](https://since.dev/since/gpt-5-nano.md) Trained to May 30, 2024. Since then: 844 endings, 367,618 breaking changes in packages - [GPT-4.1](https://since.dev/since/gpt-4.1.md) Trained to April 2024. Since then: 857 endings, 371,542 breaking changes in packages - [GPT-4.1 mini](https://since.dev/since/gpt-4.1-mini.md) Trained to April 2024. Since then: 857 endings, 371,542 breaking changes in packages - [text-embedding-3-large](https://since.dev/since/text-embedding-3-large.md) Trained to January 2024. Since then: 894 endings, 382,567 breaking changes in packages - [text-embedding-3-small](https://since.dev/since/text-embedding-3-small.md) Trained to January 2024. Since then: 894 endings, 382,567 breaking changes in packages - [GPT-4o (2024-11-20)](https://since.dev/since/gpt-4o-2024-11-20.md) Trained to September 2023. Since then: 985 endings, 397,746 breaking changes in packages - [GPT-4o (2024-08-06)](https://since.dev/since/gpt-4o-2024-08-06.md) Trained to September 2023. Since then: 985 endings, 397,746 breaking changes in packages - [GPT-4o mini](https://since.dev/since/gpt-4o-mini.md) Trained to September 2023. Since then: 985 endings, 397,746 breaking changes in packages - [GPT-4o](https://since.dev/since/gpt-4o.md) Trained to September 2023. Since then: 985 endings, 397,746 breaking changes in packages ## Google - [Gemini 4 Hydrogen](https://since.dev/since/gemini-4-hydrogen.md) Trained to March 2026. Since then: 366 endings, 193,923 breaking changes in packages - [Gemini 4 Carbon](https://since.dev/since/gemini-4-carbon.md) Trained to March 2026. Since then: 366 endings, 193,923 breaking changes in packages - [Gemini 4 Argon](https://since.dev/since/gemini-4-argon.md) Trained to March 2026. Since then: 366 endings, 193,923 breaking changes in packages - [Gemini 3.7 Flash](https://since.dev/since/gemini-3.7-flash.md) Trained to March 2026. Since then: 366 endings, 193,923 breaking changes in packages - [Gemini Flash Latest](https://since.dev/since/gemini-flash-latest.md) Trained to March 2026. Since then: 366 endings, 193,923 breaking changes in packages - [Gemini 3.5 Flash Lite](https://since.dev/since/gemini-3.5-flash-lite.md) Trained to March 2026. Since then: 366 endings, 193,923 breaking changes in packages - [Gemini 3.6 Flash](https://since.dev/since/gemini-3.6-flash.md) Trained to March 2026. Since then: 366 endings, 193,923 breaking changes in packages - [Gemini Flash-Lite Latest](https://since.dev/since/gemini-flash-lite-latest.md) Trained to March 2026. Since then: 366 endings, 193,923 breaking changes in packages - [Gemini Embedding 2](https://since.dev/since/gemini-embedding-2.md) Trained to November 2025. Since then: 454 endings, 247,787 breaking changes in packages - [Gemini Embedding 001](https://since.dev/since/gemini-embedding-001.md) Trained to May 2025. Since then: 602 endings, 300,605 breaking changes in packages - [Nano Banana 2 Lite](https://since.dev/since/gemini-3.1-flash-lite-image.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 3.5 Live Translate Preview](https://since.dev/since/gemini-3.5-live-translate-preview.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Nano Banana Pro](https://since.dev/since/gemini-3-pro-image.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Nano Banana 2](https://since.dev/since/gemini-3.1-flash-image.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 3.5 Flash](https://since.dev/since/gemini-3.5-flash.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 3.1 Flash Lite](https://since.dev/since/gemini-3.1-flash-lite.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Deep Research Max Preview (Apr-21-2026)](https://since.dev/since/deep-research-max-preview-04-2026.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Deep Research Preview (Apr-21-2026)](https://since.dev/since/deep-research-preview-04-2026.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 3.1 Flash TTS Preview](https://since.dev/since/gemini-3.1-flash-tts-preview.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 3.1 Flash Live Preview](https://since.dev/since/gemini-3.1-flash-live-preview.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 3.1 Pro Preview](https://since.dev/since/gemini-3.1-pro-preview.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 3.1 Pro Preview Custom Tools](https://since.dev/since/gemini-3.1-pro-preview-customtools.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini Pro Latest](https://since.dev/since/gemini-pro-latest.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 3 Flash Preview](https://since.dev/since/gemini-3-flash-preview.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 2.5 Flash](https://since.dev/since/gemini-2.5-flash.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 2.5 Flash-Lite](https://since.dev/since/gemini-2.5-flash-lite.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 2.5 Pro](https://since.dev/since/gemini-2.5-pro.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 2.5 Flash Preview TTS](https://since.dev/since/gemini-2.5-flash-preview-tts.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Gemini 2.5 Pro Preview TTS](https://since.dev/since/gemini-2.5-pro-preview-tts.md) Trained to January 2025. Since then: 690 endings, 328,111 breaking changes in packages - [Nano Banana](https://since.dev/since/gemini-2.5-flash-image.md) Trained to June 2024. Since then: 821 endings, 364,497 breaking changes in packages ## Mistral AI - [Devstral 2](https://since.dev/since/devstral-latest.md) Trained to December 2025. Since then: 431 endings, 235,582 breaking changes in packages - [Devstral 2 (latest)](https://since.dev/since/devstral-medium-latest.md) Trained to December 2025. Since then: 431 endings, 235,582 breaking changes in packages - [Mistral Small 4](https://since.dev/since/mistral-small-2603.md) Trained to June 2025. Since then: 576 endings, 287,097 breaking changes in packages - [Mistral Small (latest)](https://since.dev/since/mistral-small-latest.md) Trained to June 2025. Since then: 576 endings, 287,097 breaking changes in packages - [Magistral Medium (latest)](https://since.dev/since/magistral-medium-latest.md) Trained to June 2025. Since then: 576 endings, 287,097 breaking changes in packages - [Mistral Large 3](https://since.dev/since/mistral-large-2512.md) Trained to November 2024. Since then: 723 endings, 338,332 breaking changes in packages - [Ministral 3B (latest)](https://since.dev/since/ministral-3b-latest.md) Trained to October 2024. Since then: 746 endings, 343,885 breaking changes in packages - [Ministral 8B (latest)](https://since.dev/since/ministral-8b-latest.md) Trained to October 2024. Since then: 746 endings, 343,885 breaking changes in packages - [Codestral (latest)](https://since.dev/since/codestral-latest.md) Trained to October 2024. Since then: 746 endings, 343,885 breaking changes in packages - [Pixtral 12B](https://since.dev/since/pixtral-12b.md) Trained to September 2024. Since then: 770 endings, 351,186 breaking changes in packages - [Open Mistral Nemo](https://since.dev/since/open-mistral-nemo.md) Trained to July 2024. Since then: 810 endings, 360,431 breaking changes in packages ## DeepSeek - [DeepSeek V4.1 Flash 1017](https://since.dev/since/deepseek-v4-1-flash-1017.md) Trained to May 2025. Since then: 602 endings, 300,605 breaking changes in packages ## Check before it writes Run `npx since-dev init` in a repository and your coding agent checks a version or a model ID before it writes one. To see what a repository already depends on that has ended, [scan it](https://since.dev/scan.md). Every date here is on [the calendar](https://since.dev/calendar.md) with its source. Knowledge cutoffs are from [models.dev](https://github.com/sst/models.dev) (MIT License). A cutoff given as a month is read as that month’s last day. ## Put your code on continuous maintenance. Scan a public repository now, or give your agent one line. [Scan a repository](https://since.dev/scan.md). Any public GitHub repository. No sign-in. ### Tell your agent what changed since it was trained. `claude mcp add --transport http since https://api.since.dev/mcp` [Get an API key](https://app.since.dev/login?mode=signup) Codex, Cursor and any MCP client use https://api.since.dev/mcp. --- Every page on this site as Markdown: https://since.dev/sitemap.md. For agents: https://since.dev/llms.txt.