Claude Haiku 4.5 API — pricing & specs
Claude Haiku 4.5 is Anthropic's fast, lightweight Claude tier, a text-only model built for low-latency, high-throughput work. Its compact design targets quick reasoning, everyday tasks, and responsive agentic workflows where a nimble model is preferred over the heavier Opus and Sonnet tiers. On KeepRouter, Claude Haiku 4.5 costs $1 per 1M input tokens and $5 per 1M output tokens, billed at cost with no markup and no monthly fee. Call it through the OpenAI- or Anthropic-compatible API with the model id claude-haiku-4-5.
| Maker | Anthropic |
|---|---|
| Modality | Text |
| Pricing | $1 per 1M input tokens and $5 per 1M output tokens |
Frequently asked questions
How much does Claude Haiku 4.5 cost on KeepRouter?
Claude Haiku 4.5 is $1 per 1M input tokens and $5 per 1M output tokens, billed at cost with no markup and no monthly fee.
Who makes Claude Haiku 4.5?
Claude Haiku 4.5 is made by Anthropic. KeepRouter provides it through one OpenAI- and Anthropic-compatible API.
How do I call Claude Haiku 4.5 via API?
Point your OpenAI- or Anthropic-compatible client at KeepRouter and set the model to "claude-haiku-4-5". No provider-specific SDK needed.