claude-opus-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$5.00$1.25
OutputUSD / 1M tokens$25.00$10.00
Monthly costat 10M tokens/month$100.00₩132,390$34.38₩45,509
Context1M400K
Report card
Overall50.8#8/17523.7#61/175
ScienceGPQA93.2#11/15986.0#48/159
MathAA Math Indexnot taken95.7#2/94
CodingAA Coding Index78.0#2/82not taken
ReadingAA-LCR79.3#41/15569.3#79/155
KnowledgeMMLU-Pronot taken86.0#8/92
Instruction followingIFBenchnot taken70.0#38/129
Hard reasoningHLE54.9#6/17125.7#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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