Tidelines — LLM usage and market share

Head to head · 2026-09-25

OpenAI logoOpenAI: GPT-5.6 Luna vs Anthropic logoAnthropic: Claude Opus 5.5

Data source

Token share

OpenAI logoOpenAI: GPT-5.6 Luna

4.84%

Anthropic logoAnthropic: Claude Opus 5.5

1.08%

30d Δ

OpenAI logoOpenAI: GPT-5.6 Luna

+0.76pp

Anthropic logoAnthropic: Claude Opus 5.5

+0.10pp

Price — $ / M output

OpenAI logoOpenAI: GPT-5.6 Luna

$1.20

Anthropic logoAnthropic: Claude Opus 5.5

$20.00

Context window

OpenAI logoOpenAI: GPT-5.6 Luna

1050k

Anthropic logoAnthropic: Claude Opus 5.5

1000k

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/openai-gpt-5-6-luna-20260709-vs-anthropic-claude-opus-5-5

Detail pages: OpenAI: GPT-5.6 Luna · Anthropic: Claude Opus 5.5