GitHub[208K]Try OpenCode

CompareAI models

  1. Claude Opus 5.5Anthropic
  2. GPT-5.6 LunaOpenAI
ReasoningCodingCost efficiencyContext windowMultimodalTool use
Normalized model capability scores
ModelReasoningCodingCost efficiencyContext windowMultimodalTool use
Claude Opus 5.5100/100No data10/10081/10050/100No data
GPT-5.6 Luna37/10081/10064/10098/10050/10069/100
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
$4.00/ 1M
$0.20/ 1M
Output
$20/ 1M
$1.20/ 1M
Cached input
$0.20/ 1M
$0.02/ 1M
MomentumLast 2 mo
Unique users
No usage
633K
Completed sessions
No usage
1,943,085
Token share
No usage
1%
Tokens
No usage
7.3T+100%
No trend data
JUL 29SEP 22
RetentionWeek 1
Returning users
Pending
58.8%45K user-weeks

Related comparisons. Other model pairs to check.