Anthropic: Claude Haiku 4.5

Image input Text input Text output
Author's Description

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 across reasoning, coding, and computer-use tasks, Haiku 4.5 brings frontier-level capability to real-time and high-volume applications. It introduces extended thinking to the Haiku line; enabling controllable reasoning depth, summarized or interleaved thought output, and tool-assisted workflows with full support for coding, bash, web search, and computer-use tools. Scoring >73% on SWE-bench Verified, Haiku 4.5 ranks among the world’s best coding models while maintaining exceptional responsiveness for sub-agents, parallelized execution, and scaled deployment.

Key Specifications
Cost
$$$$$
Context
200K
Released
Oct 15, 2025
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Include Reasoning Stop Max Tokens Tool Choice Reasoning Temperature Tools
Features

This model supports the following features:

Reasoning Tools
Performance Summary

Claude Haiku 4.5 demonstrates strong overall performance, particularly excelling in speed and reliability. It consistently performs among the fastest models, ranking in the 68th percentile across benchmarks, and exhibits exceptional reliability with a 100% success rate, indicating minimal technical failures. While its pricing is moderate, ranking in the 25th percentile, its efficiency often translates to cost-effectiveness for its capabilities. The model showcases remarkable accuracy in specific areas. It achieves perfect scores in Hallucinations (100%) and Ethics (100%), highlighting its ability to acknowledge uncertainty and adhere to ethical principles. Haiku 4.5 also performs very well in Coding (91% accuracy) and Mathematics (93% accuracy), aligning with its description as a strong coding model. Its instruction following (70%) and reasoning (76%) capabilities are solid, contributing to its "near-frontier intelligence." General Knowledge (99%) is also a strong suit, while Email Classification (97%) is competent. Its extended thinking capabilities, controllable reasoning depth, and tool-assisted workflows further enhance its utility for real-time and high-volume applications.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $1
Completion $5
Input Cache Read $0.1
Input Cache Write $1.25

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
Anthropic
Anthropic | anthropic/claude-4.5-haiku-20251001 200K $1 / 1M tokens $5 / 1M tokens
Google
Google | anthropic/claude-4.5-haiku-20251001 200K $1 / 1M tokens $5 / 1M tokens
Amazon Bedrock
Amazon Bedrock | anthropic/claude-4.5-haiku-20251001 200K $1 / 1M tokens $5 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration
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