Claude Haiku 5.5 chat from Anthropic, released 7 October 2026, through an OpenAI-compatible endpoint. It takes up to 1,000,000 tokens of text and images, returns up to 128,000, and accepts up to 128 tool definitions with forced or automatic tool calls.
Input $0.10Output $0.50per 1 million tokensCached input $0.10Cache write $0.10Prompts over 100K tokensInput $0.50Output $2.50
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