Claude Haiku 4.5

Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...

by Anthropic

Overview

Quick stats across all benchmark runs.

Score

47%

275 benchmarks

Avg Latency

11.1s

756 requests

Pricing

$1.00 in / $5.00 out

per 1M tokens

Context

200K

tokens

Alternatives

Models with similar or better quality but different tradeoffs

Same Quality, Cheaper

Models with similar or better performance at a lower cost per token.

Model	Cost
Gemini 2.5 Flash Lite	-90%
Gemini 2.0 Flash	-89%
Llama 4 Maverick	-88%
DeepSeek V3.2	-87%
DeepSeek V3 0324	-81%

Same Quality, Faster

Models with similar or better performance but lower latency.

Model	Latency
Gemini 3 Flash Preview	-48%
Gemini 2.5 Flash Lite	-45%
Gemini 2.5 Flash	-23%
Gemini 2.0 Flash	-14%
Llama 4 Maverick	-13%

Same Cost, Better

Models at a similar price point with higher benchmark scores.

Model	Score
Gemini 3 Flash Preview	+10%
GPT-5 Mini	+3%
DeepSeek V3.2 Speciale	+3%
Gemini 2.5 Flash	+1%
DeepSeek V3 0324	+0%

Benchmark Performance

How this model performs across different benchmarks

Benchmark	Score	Rank
Explain Like I'm 5	100%	3 / 47
Venture Capital Terms Benchmark	100%	2 / 21
Spatial Reasoning: Germany	97%	2 / 29
Character Frequency Bench	95%	6 / 29
Categorization Bench	60%	15 / 54
Money Boy Cultural Literacy Test	45%	44 / 107
German Memelord Bench	43%	10 / 29
Niederstetten Benchmark	40%	22 / 35

Price vs Performance

Compare cost efficiency across all models

Current model (baseline)

Other models (relative score)

Y-axis shows score difference from shared benchmarks. X-axis uses log scale.

Score Over Time

Performance trends across all benchmark runs

Benchmark Activity

Number of benchmark runs over time

Quickstart

View on OpenRouter

Get started with this model using OpenRouter

import { OpenRouter } from "@openrouter/sdk";

const openrouter = new OpenRouter({
  apiKey: "<OPENROUTER_API_KEY>"
});

const completion = await openrouter.chat.completions.create({
  model: "anthropic/claude-haiku-4.5",
  messages: [
    {
      role: "user",
      content: "Hello!"
    }
  ]
});

console.log(completion.choices[0].message.content);

Get your API key at openrouter.ai/keys

Other Models from Anthropic

Compare performance with other models from the same creator

Model	Latency	Cost/1M	Score
Claude Sonnet 4.5	20.4s	$9.00	75%
Claude Opus 4.6	4.2s	$15.00	72%
Claude Opus 4.5	28.8s	$15.00	58%
Claude Sonnet 4.6	5.0s	$9.00	57%
Claude Opus 4.7	3.5s	$15.00	53%
Claude 3 Haiku	3.5s	$0.75	43%
Claude 3.5 Haiku	7.4s	$2.40	26%
Claude Sonnet 4	28.3s	$9.00	—
Claude Opus 4	60.9s	$45.00	—
Claude Opus 4.1	79.9s	$45.00	—
Claude 3.5 Haiku (2024-10-22)	—	$2.40	—
Claude Opus 4.7 (Fast)	—	$90.00	—
Claude Opus 4.6 (Fast)	—	$90.00	—
Claude 3.5 Sonnet	17.7s	$18.00	—
Claude 3.7 Sonnet	16.3s	$9.00	—