The company lists pricing of $4 per million input tokens, $20 per million output tokens, and $0.20 per million cache-read tokens, and says typical workloads cost 40% less than Opus 5. It also says Opus 5.5 produces output more than 30% faster, expands five-hour usage limits on several subscription plans, and adds a saveable rate-limit reset. Anthropic reports stronger behavioral-audit results and greater resistance to prompt injection, while noting deployment safeguards and restricted verification programs for certain biology and cybersecurity uses.
Raw SignalSep 25, 20261 min read1 source
Introducing Claude Opus 5.5
In one minute
Anthropic announced Claude Opus 5.5 on September 22, 2026, as the first model in its Claude 5.5 family.