Claude Haiku 5.5
Anthropic's fastest and least expensive model, for short, high-volume work.
A model a workspace can run · gbrain.io
Anthropic
Claude Haiku 5.5
Anthropic's fastest and least expensive model, for short, high-volume work.
- Vendor
- Anthropic
- Released
- Oct 2026
- Model id
- claude-haiku-5-5
Haiku 5.5 is Anthropic’s newest small model and the fastest in its lineup. It is built for high-volume, latency-sensitive work such as classification, extraction and routing, and it holds a million tokens of context.
It costs a tenth of Haiku 4.5 on prompts up to 100,000 tokens: $0.10 per million input tokens and $0.50 per million output. Prompts over 100,000 tokens cost five times that. Use it where speed and volume matter more than depth.
Pick it per workspace from the model settings and switch any time. Inference is included in the plan, or bring a key of the team's own.