---
type: "Evidence Item"
title: "Introducing Claude Haiku 4.5"
description: "Claude Haiku 4.5, our latest small model, is available today to all users. What was recently at the frontier is now cheaper and faster. Five months ago, Claude Sonnet 4 was a."
resource: "https://www.anthropic.com/news/claude-haiku-4-5"
tags: ["appendix-iii", "benchmark", "anthropic"]
timestamp: "2025-10-15"
category: "benchmark"
publisher: "Anthropic"
cope_score: 96
confidence: 0.88
---

# Introducing Claude Haiku 4.5

# Claim

Claude Haiku 4.5, our latest small model, is available today to all users. What was recently at the frontier is now cheaper and faster. Five months ago, Claude Sonnet 4 was a state-of-the-art model. Today, Claude Haiku 4.5 gives you similar levels of coding performance but at one-third the cost and more than twice the speed.

# Relevance

Appendix III, section one: model and benchmark capability evidence

# Oracle Verdict

Anthropic is describing a frontier or production capability that pushes directly on the thesis. The important signal is not the marketing language; it is the widening set of tasks now being routed through model-driven execution rather than ordinary software or headcount.

# Metadata

* Publisher: Anthropic
* Category: benchmark
* Sector: Software engineering
* Capability: Frontier model release and benchmark movement
* Cope score: 96
* Confidence: 0.88

# Related Concepts

* [Live evidence index](index.md)
* [Thesis](../thesis.md)

# Citations

[1] [Introducing Claude Haiku 4.5](https://www.anthropic.com/news/claude-haiku-4-5)