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Compare AI models: Claude Haiku 5.5 vs GPT-5.6 Luna

  1. Claude Haiku 5.5Anthropic
  2. GPT-5.6 LunaOpenAI
ReasoningCodingCost efficiencyContext windowMultimodalTool use
Normalized model capability scores
ModelReasoningCodingCost efficiencyContext windowMultimodalTool use
Claude Haiku 5.569/10025/10073/10081/10050/10050/100
GPT-5.6 Luna67/10081/10061/10098/10050/10064/100
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
$0.10/ 1M
$0.20/ 1M
Output
$0.50/ 1M
$1.20/ 1M
Cached input
$0.01/ 1M
$0.02/ 1M
MomentumLast 2 mo
Unique users
10K
517K
Completed sessions
61,680
2,150,279
Token share
0.01%
0.53%
Tokens
80B+100%
5.1T+84%
AUG 15OCT 9
AUG 15OCT 9
RetentionWeek 1
Returning users
Pending
55.3%49K user-weeks

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