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Apertus 70B Instruct vs GPT-5.2 (xhigh)

Swiss AI Initiative vs OpenAI — side-by-side benchmark comparison

Apertus 70B InstructGPT-5.2 (xhigh)
Intelligence Index7.751.3
Coding Index1.948.7
Math Index99.0
Output speed (tok/s)0.077.2
Blended price ($/1M)$1.34$4.81
Time to first token (s)0.00s64.17s
aime
aime 2599.0%
artificial analysis coding index1.9048.70
artificial analysis intelligence index7.7051.30
artificial analysis math index99.00
gpqa27.2%90.3%
hle5.5%35.4%
ifbench25.9%75.4%
lcr0.0%72.7%
livecodebench88.9%
math 500
mmlu pro87.4%
scicode5.7%52.1%
tau212.9%84.8%
terminalbench hard0.0%47.0%

Benchmark data from Artificial Analysis.