OpenRouter top 5 by token volume this week: OpenAI is back at #1

1. OpenAI GPT-5.6 Luna – 15.8T
2. DeepSeek V4.1 Flash – 11.8T
3. Tencent Hy4 preview – 11.6T
4. Z-AI GLM 5.3 Flash – 11.4T
5. DeepSeek V4 Flash – 10.6T

Pricing: $0.05 to $0.834 per million input tokens.

DeepSeek now holds 3 of the top 5 spots. V4.1 Flash launched and immediately routed 11.8T tokens – cannibalizing the older V4 Flash below it.

GLM 5.3 Flash held #4 but its promo pricing ended Sep 9 – now $0.15/M input, double what it was last week.

Hy4 preview's 40% volume drop is the biggest single-week fall in the top 5.

The leaderboard isn't splitting into lanes anymore – it's rotating. Every week a new model enters and reshuffles the order.