Tidelines — LLM usage and market share

Head to head · 2026-09-25

Anthropic logoAnthropic: Claude Opus 5.5 vs DeepSeek logoDeepSeek: DeepSeek V4.1 Flash

Data source

Token share

Anthropic logoAnthropic: Claude Opus 5.5

1.08%

DeepSeek logoDeepSeek: DeepSeek V4.1 Flash

13.21%

30d Δ

Anthropic logoAnthropic: Claude Opus 5.5

+0.10pp

DeepSeek logoDeepSeek: DeepSeek V4.1 Flash

+9.67pp

Price — $ / M output

Anthropic logoAnthropic: Claude Opus 5.5

$20.00

DeepSeek logoDeepSeek: DeepSeek V4.1 Flash

$0.42

Context window

Anthropic logoAnthropic: Claude Opus 5.5

1000k

DeepSeek logoDeepSeek: DeepSeek V4.1 Flash

1049k

Share of tokens over time

Tidelines — LLM usage and market share
Data: OpenRouter, Vercel AI Gateway as of 2026-09-25 · Source: tidelines.ai/compare/anthropic-claude-opus-5-5-20260921-vs-deepseek-deepseek-v4-1-flash-20260910

Detail pages: Anthropic: Claude Opus 5.5 · DeepSeek: DeepSeek V4.1 Flash