Anthropic releases Claude Opus 5.5, the first model in its Claude 5.5 family
Original titleClaude Opus 5.5 is available today.
AISummary
Anthropic has made Claude Opus 5.5 available today, introducing it as the first model in its new Claude 5.5 family. According to the quoted @claudeai post, it performs at the level of Claude Fable 5.1 on most tasks and costs 40% less to run than Opus 5.
AIWhy it matters
The post gives a concrete cost comparison against Opus 5 and names the model family, helping readers gauge the trade-off between price and performance.
Source: Anthropic · x.comPublished · added here