Claude Opus 5.5(anthropic.com)

1764 points by km144 1 month ago | 1070 comments

Anthropic's announcement page for the Claude Opus 5.5 model, with sections on introduction, performance and cost, safety, and availability.

Claude Fable 5.1 and Claude Mythos 5.1(anthropic.com)

49 points by meetpateltech 1 month ago | 5 comments

Claude Opus 5(anthropic.com)

64 points by meetpateltech 3 months ago | 7 comments

Claude Sonnet 4.5(anthropic.com)

1503 points by adocomplete 1 year ago | 746 comments

Anthropic's announcement post introducing Claude Sonnet 4.5, its new AI model, dated September 29, 2025.

Claude Sonnet 5(anthropic.com)

1219 points by marinesebastian 3 months ago | 751 comments

Anthropic's announcement page introducing the Claude Sonnet 5 AI model, dated June 30, 2026.

Claude Opus 4.8(anthropic.com)

1708 points by craigmart 5 months ago | 1334 comments

Anthropic's announcement post introducing the Claude Opus 4.8 AI model, dated May 28, 2026.

Claude Opus 5.5(anthropic.com)

1764 points by km144 1 month ago | 1070 comments

Anthropic's announcement page for the Claude Opus 5.5 model, with sections on introduction, performance and cost, safety, and availability.

Claude Opus 4.1(anthropic.com)

801 points by meetpateltech 1 year ago | 301 comments

Anthropic announcement page for Claude Opus 4.1, a new version of its Claude Opus large language model, dated August 5, 2025.

Claude Opus 4.7(anthropic.com)

1922 points by meetpateltech 6 months ago | 1403 comments

Anthropic's announcement post introducing Claude Opus 4.7, a new version of its Claude AI model, dated April 16, 2026.

Claude 2(anthropic.com)

383 points by technics256 3 years ago | 232 comments

Anthropic's July 11, 2023 announcement introducing Claude 2, its new large language model and chatbot.

Claude Opus 5.5 Intelligence, Performance and Price Analysis (Max)(artificialanalysis.ai)

320 points by theanonymousone 1 month ago | 101 comments

Artificial Analysis model page benchmarking Anthropic's Claude Opus 5.5 (max effort) on intelligence, speed, and price.

Claude Opus 4.6(anthropic.com)

2277 points by HellsMaddy 8 months ago | 982 comments

Anthropic's announcement post introducing Claude Opus 4.6, a new version of its flagship AI model, dated February 5, 2026.