RelayRouterModels / gemini-2.5-flash
gemini-2.5-flash API on RelayRouter
gemini-2.5-flash is a text generation (chat) model from Google DeepMind. On RelayRouter it is served by 2 public groups, billed per token from a prepaid balance with no platform fee, through the same base URL as every other model: https://relayrouter.io.
Facts
| Model id | gemini-2.5-flash |
|---|---|
| Provider | Google DeepMind |
| Modality | text generation (chat) |
| Protocols | Gemini generateContent API (/v1beta/models/{model}:generateContent) |
| Billing | Per token, prepaid balance, failed requests not billed, no platform fee |
| Payment | Credit or debit card via Stripe |
Groups and rates
| Group | Protocol | Rate |
|---|---|---|
| Gemini Fast | Gemini generateContent API | settlement rate ¥2.72 per $1 of standard usage, about 60% below the ¥6.8/$ market reference |
| Gemini Vertex Official | Gemini generateContent API | settlement rate ¥5.4 per $1 of standard usage, about 21% below the ¥6.8/$ market reference |
Rates are indicative and settle from your prepaid balance; the rate shown in the console at request time is authoritative. Market reference ¥6.8 per $1. Full table on the models page and pricing.
How to call it
Create a key in the console for a group that lists gemini-2.5-flash, then call it with that group's native protocol. The quick start covers all three protocols.
curl "https://relayrouter.io/v1beta/models/gemini-2.5-flash:generateContent" \
-H "x-goog-api-key: $RELAYROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"contents": [{"parts": [{"text": "Hello!"}]}]}'Questions
How much does gemini-2.5-flash cost on RelayRouter?
The cheapest public group serving gemini-2.5-flash is "Gemini Fast": settlement rate ¥2.72 per $1 of standard usage, about 60% below the ¥6.8/$ market reference. Usage is deducted from your prepaid balance and the exact rate at request time is shown in the console.
Which API protocol do I use for gemini-2.5-flash?
Use the native protocol of the group you pick: Gemini generateContent API at /v1beta/models/{model}:generateContent. The base URL is always https://relayrouter.io and the key goes in the usual header for that SDK.
Are failed requests billed?
No. Only successfully completed calls are billed, and there is no platform fee on top of token usage.