GPT-5 Mini pricing and routing profile
GPT-5 Mini from OpenAI lists at $0.25 per million input tokens and $2.00 per million output tokens, with a 400,000-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) | $0.17 |
| Chat reply (2,000 in, 400 out) | $1.30 |
| Retrieval-augmented answer (8,000 in, 500 out) | $3.00 |
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 GPT-5 Mini. 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 GPT-5 Mini 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 VL 235B A22B Instruct | $0.21 / $1.90 | 9% |
| Qwen3.5-27B | $0.195 / $1.56 | 22% |
| Step 3.7 Flash | $0.20 / $1.15 | 34% |
| Qwen3.5-35B-A3B | $0.163 / $1.30 | 35% |
| Qwen3.6 Flash | $0.188 / $1.13 | 37% |
| Qwen3 Coder Flash | $0.195 / $0.975 | 40% |
Questions
How much does GPT-5 Mini cost?
GPT-5 Mini lists at $0.25 per million input tokens and $2.00 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 $1.30 per 1,000 requests.
What is the context window of GPT-5 Mini?
400,000 tokens.
Can a cheaper model replace GPT-5 Mini?
Sometimes. Gimbix proves it on your own traffic before routing: the cheaper model must match GPT-5 Mini on one half of your requests and make at most three answers worse on the other.