Verified 2025-09-22 · sourced from OpenAI
GPT-4o Token Calculator & Cost Guide
Estimate OpenAI GPT-4o API usage in dollars before you send a single request. Standard pricing is $2.50 per million input tokens and $10.00 per million output tokens with a 128K token context window.
Context window
128,000 tokens
Input price
$2.50 / 1M
Output price
$10.00 / 1M
Cached input
$1.250 / 1M
Usage scenarios
Compare standard and cached pricing (where available) across common workloads.
| Scenario | Tokens in | Tokens out | Total tokens | Standard cost | Cached cost |
|---|---|---|---|---|---|
Quick chat reply Single user question with a short assistant answer | 650 | 220 | 870 | $0.0038 | $0.0030 |
Coding assistant session Multi-turn pair programming exchange (≈6 turns) | 2,600 | 1,400 | 4,000 | $0.0205 | $0.0173 |
Knowledge base response Retrieval-augmented answer referencing multiple passages | 12,000 | 3,000 | 15,000 | $0.0600 | $0.0450 |
Near-max context run Large document processing approaching the 128K token limit | 112,000 | 16,000 | 128,000 | $0.440 | $0.300 |
Daily & monthly budgeting
Translate usage into predictable operating expenses across popular deployment sizes.
| Profile | Requests/day | Tokens/day | Daily cost | Monthly cost | Cached daily | Cached monthly |
|---|---|---|---|---|---|---|
| Team pilot | 25 | 75,000 | $0.375 | $11.25 | $0.313 | $9.38 |
| Product launch | 100 | 500,000 | $2.38 | $71.25 | $1.94 | $58.13 |
| Enterprise scale | 500 | 3,000,000 | $15.00 | $450.00 | $12.50 | $375.00 |
Pricing notes
- Primary multimodal flagship with audio, vision, and text support.
- Values reflect base pricing per 1M tokens: input $2.50, output $10.00, cache $1.25.
Frequently asked questions
How much does GPT-4o cost per 1,000 tokens?
At the published rates of $2.50 per million input tokens and $10.00 per million output tokens, a typical 1,000 token request (≈70% input, 30% output) costs about $0.0047.
Does GPT-4o offer cached input discounts?
GPT-4o drops input costs to $1.250 per million cached tokens. Using cached contexts, that same 1,000 token call totals $0.0039, a significant saving for chatbots and RAG systems.
What is the context window for GPT-4o?
GPT-4o supports up to 128,000 tokens (128K), allowing large prompts and retrieval-augmented payloads in a single call.
How fresh is the GPT-4o pricing data?
Pricing is sourced from https://platform.openai.com/docs/pricing and was last verified on 2025-09-22. The calculator updates automatically when models.json is refreshed.