ClaudeModel releaseGAOct 7, 2026
Claude Haiku 5.5
claude-haiku-5-5
Claude Haiku 5.5 offers performance suitable for high-volume workloads. It features a 1M-token context window and 128k output tokens, adaptive thinking capability and an effort parameter, enabling efficient handling of massive data.
- 1M-context window
- 128k output tokens
- Adaptive thinking
- Effort feature