claude-haiku-4-5-20251001
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...
Capabilities
Modalities
Quick stats
Performance
Supported parameters
| Parameter | Always | Default |
|---|---|---|
| frequency_penalty | - | (do not send) |
| include_reasoning | - | |
| max_tokens | - | |
| presence_penalty | - | (do not send) |
| reasoning | - | |
| repetition_penalty | - | (do not send) |
| response_format | - | - |
| stop | - | |
| structured_outputs | - | - |
| temperature | (do not send) | |
| tool_choice | - | |
| tools | - | |
| top_k | (do not send) | |
| top_p | (do not send) |
Pricing
| Input price | $0.60 · 1M tokens |
| Output price | $3.00 · 1M tokens |
| Context window | 200K tokens |
| Compatible endpoints | anthropic, openai |
| Vendor | Anthropic |
Call claude-haiku-4-5-20251001 from your code
Point any OpenAI-compatible SDK at UnoRouter and request the model by name. Replace YOUR_API_KEY with a real key from your dashboard.
curl https://api.unorouter.ai/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-haiku-4-5-20251001",
"messages": [{"role": "user", "content": "Hello!"}]
}'Frequently asked questions
How much does claude-haiku-4-5-20251001 cost per 1M tokens?
Input is priced at $0.60 per 1M tokens, output at $3.00 per 1M tokens. Billing is per token, no rounding to batch sizes.
How do I access claude-haiku-4-5-20251001 via API?
Send requests to the UnoRouter /v1/chat/completions endpoint with model=claude-haiku-4-5-20251001. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.
What is the context window of claude-haiku-4-5-20251001?
claude-haiku-4-5-20251001 supports a context window of 200K tokens, shared between your prompt and the model's response.
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Try claude-haiku-4-5-20251001 now
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