Claude Haiku 4.5

by Anthropic

anthropic/claude-haiku-4-5

The fastest and cheapest model in the family, for high-volume work where latency matters more than depth.

Modalities
Text, Image
In / out per 1M
$2 / $10
Context
200K
Released
Oct 15, 2025

Overview

The fastest and cheapest model in the family, for high-volume work where latency matters more than depth. It is billed from the same balance as every other model and API here, and the price of each call comes back in the response.

Pricing

The default plan, in USD per million tokens.

MeterPer 1M tokens
Input$2.00
Output$10.00
Cache read$0.5
Cache write$2.00

Your balance and per-call records come from /v1/credits and /v1/generation.

Use it

Point your client at the gateway and pass this model id. Nothing else changes.

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  baseURL: "https://gateway.agentsky.dev",
  apiKey: process.env.AGENTSKY_API_KEY, // ast_…
});

const message = await client.messages.create({
  model: "anthropic/claude-haiku-4-5",
  max_tokens: 256,
  messages: [{ role: "user", content: "Summarise this ticket." }],
});
console.log(message.usage.cost); // USD, in the response

Questions

Claude Haiku 4.5 — AgentSky