Anthropic Announces Claude Opus 5.5: 20% API Price Cut, 40% Lower Execution Cost for Typical Tasks Compared to Opus 5
Anthropic (latest)en
Anthropic (latest)
AI Global WireAnthropic announced on September 22, 2026, the first model in the Claude 5.5 series, Claude Opus 5.5. The API model ID is claude-opus-5-5. The company states that it offers performance on par with Claude Fable 5.
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