Organization
Model explorer
Anthropic
31 tracked models · 9 families: Claude 5.5 · Claude 5 · Claude 4 · Claude 3.7 · Claude 3.5 · Claude 3 · Claude 2 · Claude Instant · Claude 1
ReleasedModelParamsCtxElo
Oct 2026Claude Haiku 5.5CLOSED—1M2922.0Sep 2026Claude Sonnet 5.5CLOSED—1M3240.8Sep 2026Claude Opus 5.5CLOSED—1M3266.5Sep 2026Claude Fable 5.1CLOSED—1M2997.4Sep 2026Claude Mythos 5.1CLOSED—1M3289.0Jul 2026Claude Opus 5CLOSED—1M2941.0Jun 2026Claude Sonnet 5CLOSED—1M2353.3Jun 2026Claude Fable 5CLOSED—1M2886.0May 2026Claude Opus 4.8CLOSED—1M2670.2Apr 2026Claude Opus 4.7CLOSED—1M2650.0Feb 2026Claude Sonnet 4.6CLOSED—1M2370.1Feb 2026Claude Opus 4.6CLOSED—1M2420.5Nov 2025Claude Opus 4.5CLOSED—200K2187.9Nov 2025Claude Opus 4.5 (High)CLOSED—200K2220.5Nov 2025Claude Opus 4.5 (Medium)CLOSED—200K2266.8Oct 2025Claude Haiku 4.5CLOSED—200K1518.6Sep 2025Claude Sonnet 4.5CLOSED—200K1905.6Aug 2025Claude Opus 4.1CLOSED—200K1700.2May 2025Claude Opus 4CLOSED—200K1637.6May 2025Claude Sonnet 4CLOSED—200K1533.4Feb 2025Claude 3.7 SonnetCLOSED—200K1383.0Oct 2024Claude 3.5 HaikuCLOSED—200K957.6Oct 2024Claude 3.5 Sonnet (New)CLOSED—200K1280.6Jun 2024Claude 3.5 SonnetCLOSED—200K1207.7Mar 2024Claude 3 HaikuCLOSED—200K632.3Mar 2024Claude 3 OpusCLOSED—200K1007.3Mar 2024Claude 3 SonnetCLOSED—200K737.7Nov 2023Claude 2.1CLOSED—200K493.3Aug 2023Claude Instant 1.2CLOSED—100K452.0Jul 2023Claude 2CLOSED—100K729.9Mar 2023Claude 1CLOSED—9K668.9Release 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
5
'26 Q3
1
'26 Q4