Models
Models from the labs in Epoch AI's catalog, the repositories they published on Hugging Face, and posts from their own news pages.
GPT-5.4 ProOpenAI · Multimodal, Language, VisionAPI accessMar 5GPT-5.3-Codex-SparkOpenAI · LanguageHosted access (no API)Feb 12GPT-5.3 CodexOpenAI · LanguageAPI accessFeb 5GPT-5.2 CodexOpenAI · LanguageAPI accessDec 18, 2025
GPT-5.2OpenAI · Language modeling/generation, Question answeringAPI accessDec 11, 2025
GPT-5.2 ProOpenAI · Multimodal, Language, VisionAPI accessDec 11, 2025GPT-5.1-Codex-MaxOpenAI · LanguageAPI accessNov 19, 2025GPT-5.1OpenAI · Multimodal, Language, VisionAPI accessNov 13, 2025GPT-5.1 InstantOpenAI · Multimodal, Language, VisionAPI accessNov 13, 2025GPT-5.1-CodexOpenAI · LanguageAPI accessNov 12, 2025
GPT-5.1-Codex-miniOpenAI · Language, MultimodalAPI accessNov 12, 2025
GPT-5 ProOpenAI · Multimodal, Language, VisionAPI accessOct 7, 2025Sora 2.0OpenAI · VideoHosted access (no API)Sep 30, 2025GPT-5-CodexOpenAI · LanguageAPI accessSep 15, 2025gpt-realtimeOpenAI · Speech, Vision, LanguageAPI accessAug 28, 2025GPT-5OpenAI · Multimodal, Language, Vision · Training compute 6.6e25 FLOPAPI accessAug 7, 2025GPT-5 miniOpenAI · Multimodal, Language, VisionAPI accessAug 7, 2025GPT-5 nanoOpenAI · Multimodal, Language, VisionAPI accessAug 7, 2025gpt-oss-120bOpenAI · Language · 117B parameters · Training compute 4.9e24 FLOPOpen weights (unrestricted)Aug 5, 2025gpt-oss-20bOpenAI · Language · 20.9B parameters · Training compute 5.5e23 FLOPOpen weights (unrestricted)Aug 5, 2025ChatGPT agentOpenAI · LanguageHosted access (no API)Jul 17, 2025o3-proOpenAIAPI accessJun 10, 2025
o3 OperatorOpenAI · Language, Vision, MultimodalHosted access (no API)May 23, 2025codex-1OpenAI · LanguageAPI accessMay 16, 2025codex-miniOpenAI · LanguageAPI accessMay 16, 2025Data: Epoch AI, CC BY 4.0. Changes: selected rows and columns of Epoch AI's database.