# Anthropic adds Claude Haiku 5.5 to OpenRouter

> The new Claude Haiku 5.5 model is now available via OpenRouter for faster, cheaper high‑volume tasks.

Oossa · 2026-10-07 · https://oossa.com/en/anthropic-adds-claude-haiku-5-5-to-openrouter

OpenRouter announced that Anthropic's Claude Haiku 5.5 model is now offered through its API. The model is positioned as a small, fast option for high‑volume, cost‑sensitive work like summarization, sub‑agents, and browser use. It replaces Claude Haiku 4.5 and claims stronger coding and computer‑use abilities. The context window is listed as 1,000,000 tokens.

## The facts

- Claude Haiku 5.5 launched on 2026-10-07 ("Wed Oct 07 2026").
- Context window: 1,000,000 tokens.

## Why it matters

Developers can run more requests cheaper and handle longer inputs when building summarization or automation tools.

## Sources & references

1. [New on OpenRouter: Anthropic: Claude Haiku 5.5](https://openrouter.ai/anthropic/claude-haiku-5.5) – OpenRouter API, 2026-10-07
2. [New on OpenRouter: Anthropic: Claude Haiku 5.5 (batch)](https://openrouter.ai/anthropic/claude-haiku-5.5:batch) – OpenRouter API, 2026-10-07
3. [Introducing Claude Haiku 5.5](https://simonwillison.net/2026/Oct/7/claude-haiku-5-5/) – Simon Willison, 2026-10-07
4. [Claude Haiku 5.5 arrives with massive price cuts proving the AI pricing arms race is far from over](https://the-decoder.com/claude-haiku-5-5-arrives-with-massive-price-cuts-proving-the-ai-pricing-arms-race-is-far-from-over/) – The Decoder, 2026-10-07

Last updated: 2026-10-07