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CompareAI models

  1. Claude Sonnet 5.5Anthropic
  2. GPT-5.6 LunaOpenAI
ReasoningCodingCost efficiencyContext windowMultimodalTool use
Normalized model capability scores
ModelReasoningCodingCost efficiencyContext windowMultimodalTool use
Claude Sonnet 5.590/1000/10021/10080/10050/100100/100
GPT-5.6 Luna67/10081/10063/10098/10050/10064/100
Overview
Author
Context length
1M
1.1M
Reasoning
True
True
Input modalities
Text, Image, Pdf
Text, Image, Pdf
Output modalities
Text
Text
Providers
Pricing
Input
$2.00/ 1M
$0.20/ 1M
Output
$10/ 1M
$1.20/ 1M
Cached input
$0.20/ 1M
$0.02/ 1M
MomentumLast 2 mo
Unique users
No usage
637K
Completed sessions
No usage
2,105,279
Token share
No usage
0.84%
Tokens
No usage
7.1T+1,383%
No trend data
AUG 4SEP 28
RetentionWeek 1
Returning users
Pending
55%50K user-weeks

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