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Claude 4.5 Haiku (Non-reasoning) vs Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)

Anthropic vs Anthropic — side-by-side benchmark comparison

Claude 4.5 Haiku (Non-reasoning)Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort)
Intelligence Index31.051.7
Coding Index29.650.9
Math Index39.0
Output speed (tok/s)105.868.2
Blended price ($/1M)$2.19$6.56
Time to first token (s)0.65s55.35s
aime
aime 2539.0%
artificial analysis coding index29.6050.90
artificial analysis intelligence index31.0051.70
artificial analysis math index39.00
gpqa64.6%87.5%
hle4.3%30.0%
ifbench42.0%56.6%
lcr43.7%70.7%
livecodebench51.1%
math 500
mmlu pro80.0%
scicode34.4%46.8%
tau232.5%75.7%
terminalbench hard27.3%53.0%

Benchmark data from Artificial Analysis.