ModelCap

Current AI model comparison

Exact identities · public evidence

Anthropic

Claude Opus 5.5

Position

#2

Index

88.0

Measured

5 public benchmark observations across 5 boards

Comparison side 1

Anthropic

Claude Sonnet 5.5

Position

#1

Index

90.8

Measured

1 public benchmark observation across 1 board

Comparison side 2

Output / 1M

$20.00

vs $10.00

Context

1M

vs 1M

Weights

API only

vs API only