Claude Haiku 4.5

Call Claude Haiku 4.5 in one line

Claude Haiku 4.5 speaks through the same OpenAI-compatible endpoint as every other model. Point your existing client at Final Router, set the model id, and you also get automatic fallback, spend caps and usage tracking - none of which the provider gives you directly.

from openai import OpenAI

client = OpenAI(
    api_key="fr_live_...",                     # your Final Router key
    base_url="https://finalrouter.com/api/v1"  # the only line you change
)

resp = client.chat.completions.create(
    model="anthropic/claude-haiku-4-5",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

Claude Haiku 4.5 FAQ

How much does Claude Haiku 4.5 cost through Final Router?

$1 per million input tokens and $5 per million output tokens - the provider's own list price, with no markup on tokens. A 5.5% fee applies only when you add credits.

What is Claude Haiku 4.5's context window?

200,000 tokens.

Does Claude Haiku 4.5 train on my data?

No. On the endpoint Final Router calls, Anthropic does not train on your prompts. Data is processed in US.

How do I call Claude Haiku 4.5?

Point any OpenAI-compatible client at https://finalrouter.com/api/v1 with your Final Router key and set model to "anthropic/claude-haiku-4-5". Your existing code does not change.