Overview
Claude Haiku 5.5 is anthropic’s fast, low-cost Claude 5.5 family model for high-volume agentic and support workloads. API ID claude-haiku-5-5.
Specifications
- Context: 1M tokens; max output 128K
- Pricing (≤100K prompt): 0.50 per million input/output tokens — ~75–90% below claude-haiku 4.5 on typical workloads
- Pricing (>100K prompt): 2.50 per million tokens
- Retirement: Not before October 7, 2027
Recent Developments
- 2026-10-07: Launch; Sonnet 5.5 cache-read cut 50% (100–$500/mo) (2026-10-07-anthropic-claude-haiku-5-5)