Organization
Model explorer
Anthropic
28 tracked models · 8 families: Claude 5 · Claude 4 · Claude 3.7 · Claude 3.5 · Claude 3 · Claude 2 · Claude Instant · Claude 1
ReleasedModelParamsCtxElo
Sep 2026Claude Fable 5.1CLOSED—1M3144.2Sep 2026Claude Mythos 5.1CLOSED—1M3523.3Jul 2026Claude Opus 5CLOSED—1M3078.5Jun 2026Claude Sonnet 5CLOSED—1M2420.4Jun 2026Claude Fable 5CLOSED—1M2928.6May 2026Claude Opus 4.8CLOSED—1M2756.0Apr 2026Claude Opus 4.7CLOSED—1M2674.5Feb 2026Claude Sonnet 4.6CLOSED—1M2417.2Feb 2026Claude Opus 4.6CLOSED—1M2433.7Nov 2025Claude Opus 4.5CLOSED—200K2228.2Nov 2025Claude Opus 4.5 (High)CLOSED—200K2261.5Nov 2025Claude Opus 4.5 (Medium)CLOSED—200K2255.6Oct 2025Claude Haiku 4.5CLOSED—200K1556.0Sep 2025Claude Sonnet 4.5CLOSED—200K1938.8Aug 2025Claude Opus 4.1CLOSED—200K1733.8May 2025Claude Opus 4CLOSED—200K1674.4May 2025Claude Sonnet 4CLOSED—200K1566.9Feb 2025Claude 3.7 SonnetCLOSED—200K1423.4Oct 2024Claude 3.5 HaikuCLOSED—200K997.9Oct 2024Claude 3.5 Sonnet (New)CLOSED—200K1320.9Jun 2024Claude 3.5 SonnetCLOSED—200K1247.7Mar 2024Claude 3 HaikuCLOSED—200K671.7Mar 2024Claude 3 OpusCLOSED—200K1047.3Mar 2024Claude 3 SonnetCLOSED—200K777.3Nov 2023Claude 2.1CLOSED—200K532.0Aug 2023Claude Instant 1.2CLOSED—100K491.1Jul 2023Claude 2CLOSED—100K767.2Mar 2023Claude 1CLOSED—9K705.7Release cadence
Tracked releases per quarter
1
'23 Q1
2
'23 Q3
1
'23 Q4
3
'24 Q1
1
'24 Q2
2
'24 Q4
1
'25 Q1
2
'25 Q2
2
'25 Q3
4
'25 Q4
2
'26 Q1
4
'26 Q2
3
'26 Q3