GPT-4o pricing and routing profile
GPT-4o from OpenAI lists at $2.50 per million input tokens and $10.00 per million output tokens, with a 128,000-token context window. Prices from OpenRouter's catalogue on 2026-09-28.
Tool callingStructured outputLog probabilities
Cost per 1,000 requests
| Request shape | List cost |
|---|---|
| Classification or routing (600 tokens in, 10 out) | $1.60 |
| Chat reply (2,000 in, 400 out) | $9.00 |
| Retrieval-augmented answer (8,000 in, 500 out) | $25.00 |
Before prompt caching. Try your own shape in the cost calculator.
Can Gimbix route to it first?
Yes. At least one host return token log probabilities for GPT-4o, which is the confidence signal Gimbix uses to let a cheaper model answer first.
Cheaper models that can answer first
Models priced below GPT-4o 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 |
|---|---|---|
| Qwen3.8 Max (0902) | $2.00 / $6.00 | 29% |
| Qwen3.8 2.4T A95B | $2.00 / $6.00 | 29% |
| Grok 4.6 | $2.00 / $6.00 | 29% |
| Grok 4.5 | $2.00 / $6.00 | 29% |
| Grok 4.7 | $1.60 / $4.80 | 43% |
| Qwen3.7 Max | $1.48 / $4.42 | 48% |
Questions
How much does GPT-4o cost?
GPT-4o lists at $2.50 per million input tokens and $10.00 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 $9.00 per 1,000 requests.
What is the context window of GPT-4o?
128,000 tokens.
Can a cheaper model replace GPT-4o?
Sometimes. Gimbix proves it on your own traffic before routing: the cheaper model must match GPT-4o on one half of your requests and make at most three answers worse on the other.