Tidelines — LLM usage and market share

Head to head · 2026-09-15

DeepSeek logoDeepSeek: DeepSeek V4 Flash 0731 vs OpenAI logoOpenAI: GPT-5.6 Luna

Data source

Token share

DeepSeek logoDeepSeek: DeepSeek V4 Flash 0731

8.49%

OpenAI logoOpenAI: GPT-5.6 Luna

7.11%

30d Δ

DeepSeek logoDeepSeek: DeepSeek V4 Flash 0731

-5.54pp

OpenAI logoOpenAI: GPT-5.6 Luna

+0.86pp

Price — $ / M output

DeepSeek logoDeepSeek: DeepSeek V4 Flash 0731

$0.12

OpenAI logoOpenAI: GPT-5.6 Luna

$1.20

Context window

DeepSeek logoDeepSeek: DeepSeek V4 Flash 0731

1311k

OpenAI logoOpenAI: GPT-5.6 Luna

1050k

Share of tokens over time

Tidelines — LLM usage and market share
Data: OpenRouter, Vercel AI Gateway as of 2026-09-15 · Source: tidelines.ai/compare/deepseek-deepseek-v4-flash-20260731-vs-openai-gpt-5-6-luna-20260709

Detail pages: DeepSeek: DeepSeek V4 Flash 0731 · OpenAI: GPT-5.6 Luna