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MODEL

Claude Haiku 4.5 API on FlowAPI

Fast Claude model option for latency-sensitive assistant workflows.
Use Claude Haiku 4.5Read docs

Key details

Context
Long context
Pricing
Check dashboard pricing
Compatible SDK
OpenAI-compatible SDKs and tools

Quick start

  1. Create a FlowAPI key.
  2. Set model to claude-haiku-4-5.
  3. Send a test chat completion request.
  4. Monitor usage and latency in the dashboard.

API example

curl https://www.flowapi.online/v1/chat/completions \
  -H "authorization: Bearer $FLOWAPI_KEY" \
  -H "content-type: application/json" \
  -d '{"model":"claude-haiku-4-5","messages":[{"role":"user","content":"Hello from FlowAPI"}]}'

FAQ

Can I call Claude Haiku 4.5 with the OpenAI SDK?

Yes. Set the FlowAPI base URL and API key in an OpenAI-compatible client.

How is Claude Haiku 4.5 priced?

The exact user price depends on the model rule and channel group multiplier shown in FlowAPI.

Is FlowAPI OpenAI compatible?

Yes. Use https://www.flowapi.online/v1 as the base URL with your FlowAPI key.

Can I use existing SDKs?

Yes. Most OpenAI-compatible SDKs and tools work by changing the base URL and API key.

Where do I manage keys and usage?

Create keys, monitor usage, and view billing in the FlowAPI dashboard.

Related FlowAPI pages

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