Claude Haiku 5.5

anthropic/claude-haiku-5-5

Fast adaptive reasoning for high-volume coding and assistant workloads.

Review option pricing before running.

Runs started with multiple options stay blind until you vote.

Use through the API
In / out per 1M
Official price: $0.1Sale price: $0.07Official price: $0.5Sale price: $0.3530% off
Modalities
Text, Image
Context
1M
Released
Oct 7, 2026

Overview

Fast adaptive reasoning for high-volume coding and assistant workloads. It is billed from the same balance as every other model and tool here, and the price of each call comes back in the response.

Run Claude Haiku 5.5 with an agent

Each guide pairs this model with a currently compatible agent, explains their separate roles, and opens the shared Composer with both selections ready.

  • Hermes + Claude Haiku 5.5

    Compatibility, setup, current model facts, pricing boundaries, and a preselected Composer.

    Open guide
  • Claude Code + Claude Haiku 5.5

    Compatibility, setup, current model facts, pricing boundaries, and a preselected Composer.

    Open guide
  • OpenCode + Claude Haiku 5.5

    Compatibility, setup, current model facts, pricing boundaries, and a preselected Composer.

    Open guide
  • goose + Claude Haiku 5.5

    Compatibility, setup, current model facts, pricing boundaries, and a preselected Composer.

    Open guide
  • Kilo + Claude Haiku 5.5

    Compatibility, setup, current model facts, pricing boundaries, and a preselected Composer.

    Open guide
  • MiniMax Code + Claude Haiku 5.5

    Compatibility, setup, current model facts, pricing boundaries, and a preselected Composer.

    Open guide

Pricing

30% off

Prices in USD per million tokens, using your plan when signed in.

Each request uses the tier matching its full input context, including cached input. Output tokens do not choose the tier. Choose the row for your cache and thinking modes.

Input context (tokens)Cache modeThinkingInputOutputCache readCache write
Up to 100,000AutomaticStandardOfficial price: $0.1Sale price: $0.07Official price: $0.5Sale price: $0.35Official price: $0.01Sale price: $0.007Official price: $0.125Sale price: $0.0875
100,001–1,000,000AutomaticStandardOfficial price: $0.5Sale price: $0.35Official price: $2.50Sale price: $1.75Official price: $0.05Sale price: $0.035Official price: $0.625Sale price: $0.4375

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-5-5",
  max_tokens: 256,
  messages: [{ role: "user", content: "Summarise this ticket." }],
});
console.log(message.usage.cost); // USD, in the response

Questions