Comparing 2 models

DeepSeek V4 Flash vs GPT-5.6 Luna

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

metric
Model 1DeepSeek V4 Flash
Model 2GPT-5.6 Luna
Best for
RAG & Long Context (#1)
Competition Math (#1)
Provider
deepseek
openai
Context
1.0M
1.1MBest
Input / 1M
$0.14Best
$0.50
Output / 1M
$0.28Best
$3
Tool use
yesBest
yesBest
Vision
yesBest
Reasoning
yesBest
yesBest
Open-weight
yesBest
Released
Apr 23, 2026
Jul 9, 2026