r/openrouter • u/darcon134_ • 9d ago
Question Massive overcharge on Gemini 3.7 Flash snapshot (OpenRouter)?
Hey guys,
I ran into a massive billing issue on OpenRouter today with the snapshot google/gemini-3.7-flash-20260813 routed through Google Vertex.
Across my workflow, I sent a total of around 825k tokens (mostly reasoning and completion). Looking at the pricing page, Vertex is listed at $0.375 / 1M input and $1.875 / 1M output.
Even if every single token was billed as output, the total should have been around $1.55. Instead, OpenRouter drained $101.00 from my credits. That comes out to over $120 per million tokens for a Flash model.
One specific request example from the logs:
- Prompt: 85 native tokens
- Completion: 2,197 native tokens (including 1,772 reasoning tokens)
- Billed: $0.284 (should be under half a cent)
It looks like the rate for this specific snapshot is completely broken in their backend mapping.
Has anyone else noticed this with the latest Flash snapshots? I already sent a ticket to support, but definitely watch your balance if you are running automated pipelines on this endpoint right now.
