GPT-4 Turbo pricing and routing profile
GPT-4 Turbo from OpenAI lists at $10.00 per million input tokens and $30.00 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) | $6.30 |
| Chat reply (2,000 in, 400 out) | $32.00 |
| Retrieval-augmented answer (8,000 in, 500 out) | $95.00 |
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-4 Turbo, which is the confidence signal Gimbix uses to let a cheaper model answer first.
Cheaper models that can answer first
Models priced below GPT-4 Turbo 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 |
|---|---|---|
| GPT-5.4 Image 2 | $8.00 / $15.00 | 31% |
| GPT-4o (2024-05-13) | $5.00 / $15.00 | 50% |
| Qwen3.8 Max Prime | $4.00 / $12.00 | 60% |
| Ember-1 | $3.00 / $15.00 | 63% |
| Kimi K3 | $3.00 / $15.00 | 63% |
| GLM 5.3 Prime | $2.80 / $8.80 | 72% |
Questions
How much does GPT-4 Turbo cost?
GPT-4 Turbo lists at $10.00 per million input tokens and $30.00 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 $32.00 per 1,000 requests.
What is the context window of GPT-4 Turbo?
128,000 tokens.
Can a cheaper model replace GPT-4 Turbo?
Sometimes. Gimbix proves it on your own traffic before routing: the cheaper model must match GPT-4 Turbo on one half of your requests and make at most three answers worse on the other.