Comparing 2 models

Claude Sonnet 4.6 vs GPT-5.6 Luna

Facts first, then task-specific rankings. A highlighted cell is better only for that row, not universally.

metric
Model 1Claude Sonnet 4.6
Model 2GPT-5.6 Luna
Best for
Document Summarization (#1)
Competition Math (#1)
Provider
anthropic
openai
Context
1M
1.1MBest
Input / 1M
$3
$0.50Best
Output / 1M
$15
$3Best
Tool use
yesBest
yesBest
Vision
yesBest
yesBest
Reasoning
yesBest
yesBest
Open-weight
Released
Feb 5, 2026
Jul 9, 2026