Tidelines — LLM usage and market share

Head to head · 2026-10-19

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

Data source

Token share

Anthropic logoAnthropic: Claude Opus 5.5

4.44%

DeepSeek logoDeepSeek: DeepSeek V4.1 Flash

11.56%

30d Δ

Anthropic logoAnthropic: Claude Opus 5.5

+3.46pp

DeepSeek logoDeepSeek: DeepSeek V4.1 Flash

-5.68pp

Price — $ / M output

Anthropic logoAnthropic: Claude Opus 5.5

$20.00

DeepSeek logoDeepSeek: DeepSeek V4.1 Flash

$0.01

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
Source: OpenRouter (openrouter.ai/rankings), as of 2026-10-19. Vercel AI Gateway data as of 2026-10-19. · tidelines.ai/compare/anthropic-claude-opus-5-5-vs-deepseek-deepseek-v4-1-flash-20260910

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