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Claude Haiku 4.5

Model family: Claude
Claude Haiku 4.5 is tuned for responsiveness and steady quality, so teams can serve real-time assistants, support bots, and document workflows without heavy latency. It follows instructions cleanly, maintains coherence over long prompts, and handles practical software tasks from code generation to debugging with clear explanations. The model accepts images alongside text for charts, screenshots, and document understanding, then returns grounded answers or structured JSON that downstream systems can trust. It integrates with retrieval to reduce hallucination, streams tokens for interactive UX, and quantizes well for predictable cost. Most deployments route routine queries to Haiku 4.5 for speed and escalate only the hardest problems to a larger Claude tier, which keeps both accuracy and budget in balance.
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Released: October 15, 2025

Overview

Claude Haiku 4.5 is Anthropic’s fast, cost-efficient model. It handles everyday reasoning, coding, and multimodal inputs with long context, tool and function calling, and reliable JSON output, making it a strong default for high-throughput apps.

About Anthropic

Anthropic is a technology company specializing in artificial intelligence and machine learning solutions.

Industry: Artificial Intelligence
Company Size: 3673
Location: San Francisco, California, US
View Company Profile

Benchmark scores

How Claude Haiku 4.5 ranks on tracked AI benchmarks. Click any benchmark to see its full leaderboard.

80.7%
80.7%
GPQA Diamond
Knowledge
73.0%
GPQA Diamond
Knowledge
73.0%
MMMU
Multimodal
73.2%
MMMU
Multimodal
73.2%
OSWorld
Agentic
50.7%
OSWorld
Agentic
50.7%
83.0%
Compare across all benchmarks →

Tools using Claude Haiku 4.5

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Last updated: April 6, 2026
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