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Claude 4.5 Haiku

Claude 4.5 Haiku is an AI model from Anthropic.

Publisher
Anthropic
Family
Claude
Context
200K
Input
Output
Released
15 Oct 2025

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Notes

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Attribution

Benchmark scores
dabstep-orgAASWE-benchprime-hubVals AIEQ-Bench
Attribution policy →
Context
200K
Input
$1
/1M tok
Output
$5
/1M tok
Blended
$2
#423/ 500/1M · 3:1
Speed
0
#106/ 499tok/s

Price & speed via Artificial Analysis · ranked across tracked models

Reasoning effortIndexSpeed
Reasoning16.90 t/s
Non-reasoning15.40 t/s

Intelligence Index per reasoning-effort setting, via Artificial Analysis · pricing identical across tiers

Reported on 25 evals across 14 domains - best 100.0% on Mlebench · #1 of 3

Reported eval scores

25
Mlebench100
DABstep90
τ²-bench (Tau²-bench)54.7
AIME 2025: Problems from the American Invitational Mathematics Examination83.7
SciCode42.2
GPQA Diamond67.2
Terminal-Bench (Hard)27.3
IFBench54.3
SWE-bench Multilingual64.7
MedScribe85.2
MedCode32.7
LiveCodeBench61.5
SWE-bench Verified66.6
MMLU-Pro76
Humanity's Last Exam (HLE)10.4
Vals Index22.9
EQ-Bench Longform Creative Writing65
CorpFin v260.3
MortgageTax62.2
TaxEval v267.5