Claude Haiku 4.5
Anthropic's fastest and cheapest model. Great for quick answers and simple tasks in high volume.
Released October 15, 2025
Pricing
Capacity
Capabilities
Best Scores
Best For
Benchmark Scores
Specialized Skills
GDPval-AA v2
Real paid work from 44 different jobs, such as law, nursing, and software. Judges compare two answers side by side without knowing which model wrote them, and the winner gains rating points. A typical human expert scores 1000, so a higher number means the work was picked over a human more often.
Independently measured by Artificial Analysis.
Software Engineering
SWE-bench Verified
Hands the AI bugs from actual software projects and counts how many it fixes. Like a coding job interview, but with real work.
Provider-reported; no independent run recorded yet.
Why Choose Claude Haiku 4.5?
Haiku is perfect for high-volume, cost-conscious applications. At $1/$5, it's one of the cheapest frontier models available. Despite its speed, it still supports reasoning and web search, making it surprisingly versatile.
How It Compares
vs Claude Sonnet 5
Haiku is 5x cheaper but less capable; Sonnet is the all-rounder.
vs GPT-5.6 Luna
Both are budget options; Haiku is cheaper, Luna has more context.