DeepSeek V4.1 Flash vs Claude Opus 5.5

DeepSeek V4.1 FlashClaude Opus 5.5
Performance score1475 pts (#28)1507 pts (#1)
Usage · 7 days35.6T tokens (#1)3.83T tokens (#9)
Output price$1.2 per 1M tokens$20 per 1M tokens
Input price$0.3 per 1M tokens$4 per 1M tokens
Context length1.05M tokens1M tokens
ReleasedSep 10, 2026Sep 22, 2026

Source: OpenRouter (usage Oct 2 – 8 · prices), Arena (performance · quality) · CC BY 4.0. Prices are converted at fixed exchange rates.