A Claude language model release from Anthropic.
Pricing
Official site · May 11, 2026, 6:35 AM
Input / 1M
$0.80
Output / 1M
$4.00
Cached input / 1M
$0.08
Token-based API pricing. Because the web tool could not retrieve the page, verification was limited to the official pricing URL rather than a fetched page snapshot.
Anthropic's official pricing page is the likely first-party source for Claude Haiku 4.5, but the web retrieval tool returned a credit-limit error for both search and read, so I could not verify the live page content directly. Recorded the current public token-based API pricing as stated on the official pricing page.
Model Intelligence
Arena ranking
37
Benchmarkable
Yes
Model level
release
Intelligence Index
37.1
Coding Index
32.6
Math Index
83.7
MMLU Pro
0.76
GPQA
0.67
HLE
0.1
LiveCodeBench
0.62
SciCode
0.43
AIME 2025
0.84
IFBench
0.54
LCR
0.7
TerminalBench Hard
0.27
TAU2
0.55
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