GPT-4o vs o4-mini— Pricing & Token Cost Comparison
Side-by-side API pricing and tokenizer details for GPT-4o (OpenAI) and o4-mini (OpenAI).
Side-by-side pricing
| Feature | GPT-4o | o4-mini |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input (per 1M tokens) | $2.50 | $1.10 |
| Output (per 1M tokens) | $10.00 | $4.40 |
| Context caching | No | No |
| Batch API discount | 50% off | 50% off |
| Context window | 128K tokens | 200K tokens |
| Tokenizer | o200k_base (tiktoken) | o200k_base (tiktoken) |
Real-world cost example
1,000 API requests per month, each with 500 input tokens and 200 output tokens (500K input + 200K output total).
GPT-4o
$3.2500
Input: $1.2500 + Output: $2.0000
o4-mini
$1.4300
Input: $0.5500 + Output: $0.8800
o4-mini is 56% cheaper for this workload — saving $1.8200 per month at this volume.
Frequently asked questions
- Is GPT-4o cheaper than o4-mini?
- No, o4-mini is cheaper for the typical workload above. At $1.10/1M input and $4.40/1M output tokens, it costs $1.4300 versus $3.2500 for GPT-4o — a 56% difference.
- What is the context window of GPT-4o vs o4-mini?
- GPT-4o supports a 128K token context window. o4-mini supports a 200K token context window. A larger context window lets you include more text — documents, conversation history, or code — in a single API call.
- Do GPT-4o or o4-mini support context caching or batch discounts?
- GPT-4o does not support context caching. It offers a 50% Batch API discount. o4-mini does not support context caching. It offers a 50% Batch API discount.
Calculate costs for your actual prompt
Paste your prompt into the calculator and get exact token counts using each model's real tokenizer — all in your browser.
Open calculator