claude-opus-5.5 vs gpt-5.1-codex
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$1.25
OutputUSD / 1M tokens$20.00$10.00
Monthly costat 10M tokens/month$80.00₩105,912$34.38₩45,509
Context1M400K
Report card
Overall57.6#1/17523.7#61/175
ScienceGPQAnot taken86.0#48/159
MathAA Math Indexnot taken95.7#2/94
ReadingAA-LCR84.7#4/15569.3#79/155
KnowledgeMMLU-Pronot taken86.0#8/92
Instruction followingIFBenchnot taken70.0#38/129
Hard reasoningHLE61.4#1/17125.7#65/171
Measured and published by Artificial Analysis. Each subject is a different test, so compare within a subject rather than across them.
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