# Claude Haiku 4.5

> Anthropic's Haiku-tier model of October 2025 — near-frontier intelligence for real-time and high-volume work, succeeded by Claude Haiku 5.5 in October 2026.

- Maker: Anthropic
- Line: Claude Haiku
- Canonical page: https://ai-tldr.dev/models/claude-haiku-4-5/
- Updated: 2026-10-07

## In short

Claude Haiku 4.5 is Anthropic's Haiku-tier model of October 2025 — near-frontier intelligence for real-time and high-volume work, succeeded by Claude Haiku 5.5 in October 2026. It has a 200K-token context window and costs $1.00 per million input tokens and $5.00 per million output tokens. You can use it through Anthropic API.

## Facts

| Fact | Value | Source |
| --- | --- | --- |
| Context window | 200K (max output 64K) | [1] |
| Input price | $1.00 / 1M tokens (cached $0.10) | [2] |
| Output price | $5.00 / 1M tokens | [2] |
| Licence | Proprietary · API only | [1] |
| Released | 15 October 2025 | [3] |
| Parameters | Undisclosed | [1] |
| Knowledge cutoff | Feb 2025 | [1] |

## Sources

1. [Models overview (specs)](https://platform.claude.com/docs/en/about-claude/models/overview)
2. [Anthropic pricing](https://platform.claude.com/docs/en/about-claude/pricing)
3. [Introducing Claude Haiku 4.5](https://www.anthropic.com/news/claude-haiku-4-5)

## Overview

Claude Haiku 4.5 was Anthropic's fastest and most cost-efficient model at its release, delivering near-frontier intelligence for real-time and high-volume applications. Released October 15, 2025, it matches Claude Sonnet 4's performance on coding, computer use, and agent tasks at a fraction of the cost.

It is the first Haiku model to include extended thinking, computer use, and context awareness, with controllable reasoning depth and a 128K thinking budget. It supports a 200K-token context window, up to 64K output tokens, and accepts both text and image input.

Pricing is $1 per million input tokens and $5 per million output tokens, with cache reads at $0.10 per million. Its speed and price make it well suited to sub-agents, parallelized execution, and scaled deployment.

## Benchmarks

- SWE-bench Verified: 73.3% ([source](https://www.anthropic.com/news/claude-haiku-4-5))
- Terminal-Bench: 41.75% ([source](https://www.anthropic.com/news/claude-haiku-4-5))

## Pricing

- Input: $1.00 / 1M tokens
- Cached input: $0.10 / 1M tokens
- Output: $5.00 / 1M tokens

Source: https://platform.claude.com/docs/en/about-claude/pricing

## Strengths

- Fastest Claude model with the lowest per-token price ($1/$5)
- Coding performance matching Claude Sonnet 4 at about one-third the cost
- Strong agentic coding (73.3% on SWE-bench Verified)
- First Haiku model with extended thinking and computer use
- Ideal for high-throughput sub-agents and parallelized execution

## Best for

- Reach for it when you need low-latency, high-volume inference such as real-time chat or large fan-out agent fleets.
- Reach for it as a cost-efficient sub-agent or worker model inside a larger Opus/Sonnet-orchestrated system.
- Reach for it for coding and computer-use tasks where speed and cost matter more than absolute frontier capability.

## How to access

- [Anthropic API](https://platform.claude.com/docs/en/about-claude/models/overview) — model id `claude-haiku-4-5-20251001`

## Claude Haiku versions

- Claude Haiku 4.5 (15 October 2025) — this page
- [Claude 3.5 Haiku](https://ai-tldr.dev/models/claude-3-5-haiku/) (22 October 2024)
- [Claude 3 Haiku](https://ai-tldr.dev/models/claude-3-haiku/) (13 March 2024)

## FAQ

### How much does Claude Haiku 4.5 cost?

Claude Haiku 4.5 costs $1 per million input tokens and $5 per million output tokens, making it Anthropic's cheapest current model. Prompt-cache reads are $0.10 per million tokens, and batch processing offers a further 50% discount on both input and output.

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

Claude Haiku 4.5 supports a 200K-token context window and can generate up to 64K output tokens per request. It is the first Haiku model to add extended thinking, with a thinking budget of up to 128K tokens. Its knowledge cutoff is February 2025.

### Is Claude Haiku 4.5 good for coding?

Yes. Claude Haiku 4.5 scores 73.3% on SWE-bench Verified, matching Claude Sonnet 4's coding ability at roughly one-third the cost and more than twice the speed, which makes it strong for high-volume coding agents and sub-agents.

## Links

- [Introducing Claude Haiku 4.5](https://www.anthropic.com/news/claude-haiku-4-5)
- [Claude Haiku product page](https://www.anthropic.com/claude/haiku)
- [Models overview (specs)](https://platform.claude.com/docs/en/about-claude/models/overview)
- [Anthropic pricing](https://platform.claude.com/docs/en/about-claude/pricing)

Source: AI/TLDR LLM registry, https://ai-tldr.dev/models/claude-haiku-4-5/