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gpt-oss-120b (low) vs GPT-5.2 (medium)

OpenAI vs OpenAI — side-by-side benchmark comparison

gpt-oss-120b (low)GPT-5.2 (medium)
Intelligence Index24.546.6
Coding Index15.544.2
Math Index66.796.7
Output speed (tok/s)370.00.0
Blended price ($/1M)$0.26$4.81
Time to first token (s)0.49s0.00s
aime
aime 2566.7%96.7%
artificial analysis coding index15.5044.20
artificial analysis intelligence index24.5046.60
artificial analysis math index66.7096.70
gpqa67.2%86.4%
hle5.2%24.9%
ifbench58.3%65.2%
lcr43.7%63.3%
livecodebench70.7%89.4%
math 500
mmlu pro77.5%85.9%
scicode36.0%46.2%
tau245.0%74.3%
terminalbench hard5.3%43.2%

Benchmark data from Artificial Analysis.