Anthropic Launches Claude Opus 5.5, Sonnet and Haiku 5.5 to Follow

22 Sep 2026 16:31US Indexes US Stocks
  • Anthropic introduces Claude Opus 5.5, available across all platforms including AWS, Google Cloud and Microsoft Azure
  • Opus 5.5 priced at $4 per million input tokens and $20 per million output tokens
  • Anthropic: Opus 5.5 performs at the level of Claude Fable 5.1 on most workloads while costing around 40% less to run than Opus 5
  • Anthropic increases five-hour usage limits by 20% across all subscription plans.
  • Lower pricing means five-hour and weekly limits for Opus 5.5 go 25% further
  • Anthropic plans to launch Claude Sonnet 5.5 and Haiku 5.5 in the coming weeks