Leaderboard
Head-to-head
Claude Sonnet 5.5 vs DeepSeek V4.1 Flash
Claude Sonnet 5.5 leads DeepSeek V4.1 Flash 1–0 across 1 live race on identical prompts, graded blind.
1
Claude Sonnet 5.5 wins
0
DeepSeek V4.1 Flash wins
Telemetry, averaged
Claude Sonnet 5.5DeepSeek V4.1 Flash
84.0Avg quality0.0
11.2sAvg latency—
$0.0196Avg cost / run$0.00152
$2 / $10 per 1M tokens (in/out)PricingSee OpenRouter for current pricing