claude-opus-5.5 vs gpt-oss-20b

Pricing and scores side by side. Blank cells mean the price is undisclosed or the model did not take that test.

InputUSD / 1M tokens$4.00$0.02
OutputUSD / 1M tokens$20.00$0.09
Monthly costat 10M tokens/month$80.00₩105,912$0.36₩477
Context1M131K
Report card
Overall57.6#1/1759.0#134/175
ScienceGPQAnot taken68.8#109/159
MathAA Math Indexnot taken89.3#13/94
CodingAA Coding Indexnot taken20.7#66/82
ReadingAA-LCR84.7#4/15534.7#125/155
KnowledgeMMLU-Pronot taken74.8#61/92
Instruction followingIFBenchnot taken65.1#50/129
Hard reasoningHLE61.4#1/17111.0#103/171

Measured and published by Artificial Analysis. Each subject is a different test, so compare within a subject rather than across them.

Try another pair

Swap one side and keep comparing.