Using Claude Haiku 4.5 on Anthropic

Quick Start

1. 1
   Create an account at Anthropic and generate an API key.
2. 2
   Use the Anthropic SDK or REST API to call claude-haiku-4-5 — see the documentation for request format.
3. 3
   You'll be billed $1.00/1M input, $5.00/1M output tokens. See full pricing.

Code Examples

import anthropic

client = anthropic.Anthropic()  # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
    model="claude-haiku-4-5",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}]
)
print(message.content[0].text)

Pricing on Anthropic

Capabilities

About Claude Haiku 4.5

Claude Haiku 4.5 is Anthropic's Claude 4.5 model with multimodal text and image input. It offers a 200K-token context window and scores 73.3 on SWE-bench Verified.