Claude Models
Fable and Mythos
Claude 5.12026
Claude Fable 5.1 (Sep 2026)
Claude Mythos 5.1 (Sep 2026)
Claude 52026
Claude Fable 5 (Jun 2026)
Claude Mythos 5 (Jun 2026)
Opus
Claude 52026
Claude Opus 5.5 (Sep 2026)
Claude Opus 5 (Jul 2026)
Claude 42025 to 2026
Claude Opus 4.8 (May 2026)
Claude Opus 4.7 (Apr 2026)
Claude Opus 4.6 (Feb 2026)
Claude Opus 4.5 (Nov 2025)
Claude Opus 4.1 (Aug 2025)
Claude Opus 4 (May 2025)
Claude 32024
Claude 3 Opus (Mar 2024)
Sonnet
Claude 52026
Claude Sonnet 5.5 (Sep 2026)
Claude Sonnet 5 (Jun 2026)
Claude 42025 to 2026
Claude Sonnet 4.6 (Feb 2026)
Claude Sonnet 4.5 (Sep 2025)
Claude Sonnet 4 (May 2025)
Claude 32024 to 2025
Claude 3.7 Sonnet (Feb 2025)
Claude 3.5 Sonnet, upgraded (Oct 2024)
Claude 3.5 Sonnet (Jun 2024)
Claude 3 Sonnet (Mar 2024)
Haiku
Claude 52026
Claude Haiku 5.5 (Oct 2026)
Claude 42025
Claude Haiku 4.5 (Oct 2025)
Claude 32024
Claude 3.5 Haiku (Oct 2024)
Claude 3 Haiku (Mar 2024)
Claude 1, 2 and Instant
Claude 22023
Claude 2.1 (Nov 2023)
Claude 2 (Jul 2023)
Claude Instant2023
Claude Instant 1.2 (Aug 2023)
Claude Instant (Mar 2023)
Claude 12023
Claude 1 (Mar 2023)
Claude Models Explained: A Simple Model Hierarchy Mind Map
Claude Fable, Mythos, Opus, Sonnet and Haiku. Here is every Claude model Anthropic has released, from Claude 1 in 2023 to Claude Haiku 5.5, split by tier and generation, newest first.
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