# Claude Haiku 5.5

Claude Haiku 5.5 is Anthropic's latest language model in our dataset, released Oct 7, 2026. Proprietary, API access only. Anthropic's fastest, smallest current Claude model, built for high-volume work like summarization, subagents and browser use. Verified against vendor sources on Oct 26, 2026.

Last verified: 2026-10-26 · Evidence: Reported · Canonical: https://theagenticweekly.com/models/claude-haiku-5-5 · JSON: https://theagenticweekly.com/api/models/claude-haiku-5-5

## Key facts

| Fact | Value | Source |
|---|---|---|
| Vendor | Anthropic |  |
| Released | Oct 7, 2026 | https://www.anthropic.com/news |
| API id | `claude-haiku-5-5` | https://platform.claude.com/docs/en/about-claude/models/overview |
| Context window | 1,000,000 tokens (1M) | https://platform.claude.com/docs/en/about-claude/models/overview |
| Input | text, image | https://platform.claude.com/docs/en/about-claude/models/overview |
| Output | text | https://platform.claude.com/docs/en/about-claude/models/overview |
| Licence | Proprietary (API) | https://platform.claude.com/docs/en/about-claude/models/overview |
| Pricing | $0.1 in / $0.5 out per 1M tokens. Listed by Anthropic as "from" $0.10 / $0.50. | https://platform.claude.com/docs/en/about-claude/models/overview |

## What we tested

Nothing yet. We have not run Claude Haiku 5.5 ourselves, so every fact here is Reported from the sources below.

## Not verified, left out

- Maximum output tokens for Haiku 5.5 were not captured.

## Sources

- [Anthropic models overview](https://platform.claude.com/docs/en/about-claude/models/overview)
- [Anthropic newsroom](https://www.anthropic.com/news)

Data licence: CC BY 4.0. Data: Agentic Weekly (https://theagenticweekly.com), CC BY 4.0.