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Claude Haiku 4.5

#24

Anthropic

Fastest Claude model. Real-time interactions, lightweight classification.

Official page →
📖Context200K tokens
🚀Speed200 tok/s
💵Input price$0.500/1M
💸Output price$2.50/1M

Benchmarks

Gray bar = dataset average
MMLU57 academic subjects
82.9%avg 81.8
GPQA DiamondPhD-level science questions
43.0%avg 50.4
HumanEvalPython code generation
88.3%avg 79.9
SWE-Bench VerifiedReal GitHub engineering tasks
33.2%avg 32.4
Composite ScoreScore = MMLU×20% + GPQA×30% + HumanEval×25% + SWE-Bench×25%59.9

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API Providers

Anthropic
Input
$0.800/1M
Output
$4.00/1M
→
OpenRouter
Input
$0.500/1M
Output
$2.50/1M
→

Details

Provider
Anthropic
Parameters
-
Context
200K tokens
Speed
200 tok/s
Open Source
No
License
Proprietary
Released
Oct 2025

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