Claude Haiku 4.5
Fast and inexpensive. The model for volume.
A model a workspace can run · gbrain.io
Anthropic
Claude Haiku 4.5
Fast and inexpensive. The model for volume.
- Vendor
- Anthropic
- Released
- May 2026
- Model id
- claude-haiku-4-5-20251001
Haiku is Anthropic’s small, fast tier. It answers quickly and costs a fraction of Opus, which makes it the right choice when you’re running many calls or the task is well-scoped: classification, extraction, routing, quick summaries.
It won’t out-reason Opus on an open-ended problem. That’s the trade. Used where it fits, it keeps a brain responsive and cheap.
Best for: high volume, low latency, well-defined tasks.
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.