Comparing 2 models

Claude Sonnet 4.6 vs DeepSeek V4 Flash

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

metric
Model 1Claude Sonnet 4.6
Model 2DeepSeek V4 Flash
Best for
Document Summarization (#1)
RAG & Long Context (#1)
Provider
anthropic
deepseek
Context
1M
1.0MBest
Input / 1M
$3
$0.14Best
Output / 1M
$15
$0.28Best
Tool use
yesBest
yesBest
Vision
yesBest
Reasoning
yesBest
yesBest
Open-weight
yesBest
Released
Feb 5, 2026
Apr 23, 2026