# Claude Haiku 4.5

Claude Haiku 4.5 is a model from Anthropic, released on 15 Oct 2025. The context window is 200,000 tokens. The maximum output is 64,000 tokens. Pricing is $1.00 per million input tokens and $5.00 per million output tokens.

- Developer: Anthropic
- Id: claude-haiku-4-5
- Reported: 2025-10-18T00:00:00.000Z
- Released: 2025-10-15T00:00:00.000Z
- Sighting: 2026-09-21T18:47:57.048Z
  - [evidence link](https://models.dev/#claude-haiku-4-5)
- Status: Released
- Canonical: https://alexgetman.com/models/anthropic/claude-haiku-4-5/

## Questions

### What is the context window of Claude Haiku 4.5?

The context window is 200,000 tokens. The maximum output is 64,000 tokens.

### How much does Claude Haiku 4.5 cost?

Pricing is $1.00 per million input tokens and $5.00 per million output tokens. Cached input is $0.10 per million.

### When was Claude Haiku 4.5 released?

On 15 Oct 2025.

## Timeline

- 2026-10-07T19:43:10.391Z · [Claude Code · changelog](https://code.claude.com/docs/en/changelog)

## Evidence links

- [Claude Code · changelog](https://code.claude.com/docs/en/changelog)
- [Azure Foundry · lifecycle](https://learn.microsoft.com/en-us/azure/foundry/concepts/model-lifecycle-retirement?view=azureml-api-2)
- [models-dev](https://models.dev/#claude-haiku-4-5)
- [models.dev · catalogue](https://models.dev/#claude-haiku-4.5)
- [models.dev · catalogue](https://models.dev/#databricks-claude-haiku-4-5)
- [OpenCode · discovery](https://opencode.ai/data/anthropic/claude-haiku-4-5)
- [anthropic-pricing](https://platform.claude.com/docs/en/about-claude/pricing)
- [review](https://platform.claude.com/docs/en/models/haiku-4-5/overview)
- [Anthropic · model index](https://platform.claude.com/docs/en/models/overview)
- [Vercel AI Gateway](https://vercel.com/ai-gateway)
- [Arena · leaderboards](https://www.anthropic.com/news/claude-haiku-4-5)

## Signals

- [Claude Haiku 4.5 spotted on Arena](https://alexgetman.com/signals/2026/11/10/claude-haiku-4-5/)
- [Claude Haiku 4.5 spotted on models.dev](https://alexgetman.com/signals/2026/09/21/claude-4-5-haiku/)