Gemini 2.5 Flash pricing and routing profile
Gemini 2.5 Flash from Google lists at $0.30 per million input tokens and $2.50 per million output tokens, with a 1,048,576-token context window. Prices from OpenRouter's catalogue on 2026-09-28.
Tool callingStructured outputReasoning control
Cost per 1,000 requests
| Request shape | List cost |
|---|---|
| Classification or routing (600 tokens in, 10 out) | $0.205 |
| Chat reply (2,000 in, 400 out) | $1.60 |
| Retrieval-augmented answer (8,000 in, 500 out) | $3.65 |
Before prompt caching. Try your own shape in the cost calculator.
Can Gimbix route to it first?
Not as a first-answer model through OpenRouter: no host returns token log probabilities for Gemini 2.5 Flash. It can still be the model Gimbix falls back to when a cheaper model is unsure.
Cheaper models that can answer first
Models priced below Gemini 2.5 Flash that expose a confidence signal. Whether they answer your traffic as well is what a Gimbix pilot measures.
| Model | Input / output per 1M | Cheaper on a chat reply |
|---|---|---|
| Qwen3 235B A22B Thinking 2507 | $0.23 / $2.30 | 14% |
| Qwen3 VL 30B A3B Thinking | $0.20 / $2.40 | 15% |
| Qwen3.5-122B-A10B | $0.26 / $2.08 | 16% |
| Qwen3 VL 8B Thinking | $0.18 / $2.10 | 25% |
| Qwen3 VL 235B A22B Instruct | $0.21 / $1.90 | 26% |
| Qwen3.5 Plus 2026-02-15 | $0.26 / $1.56 | 29% |
Questions
How much does Gemini 2.5 Flash cost?
Gemini 2.5 Flash lists at $0.30 per million input tokens and $2.50 per million output tokens on OpenRouter as of 2026-09-28. A typical chat reply of 2,000 input and 400 output tokens costs about $1.60 per 1,000 requests.
What is the context window of Gemini 2.5 Flash?
1,048,576 tokens.
Can a cheaper model replace Gemini 2.5 Flash?
Sometimes. Gimbix proves it on your own traffic before routing: the cheaper model must match Gemini 2.5 Flash on one half of your requests and make at most three answers worse on the other.