o3 Mini API price
o3-mini
The cheapest o3 Mini API is $1.10/M input at Official - OpenAI - all 2 providers compared below, per 1M tokens.
SmallOpenAI2 sellers
Input
$1.10
per 1M tokens · Official - OpenAI
Output
$4.40
per 1M tokens · Official - OpenAI
Where to buy it
Cheapest o3 Mini API providers compared - 2 sellers, from $1.10/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Your cost |
|---|---|---|---|---|
| Official - OpenAI | 1.10cheapest | 4.40 | 0.550 | |
| Batch | 0.550 | 2.20 | - | |
| OpenRouter (aggregator)stale | 1.10 | 4.40 | 0.550 | |
| Batchstale | 0.550 | 2.20 | 0.275 |
Against its tier
- This model$5.50
- Cheapest · DeepSeek V4 Flash (0731 snapshot)$0.126
- Tier median · GPT 5.4 Nano (latest)$1.1682
#19 of 19 small · cheaper than 0%
Details
- Context window
- -not published
- Developer
- OpenAI
- Intelligence
- 12.5est.
- Sellers
- 2
- Cached input
- $0.55where the source publishes one
- Cheapest at
- Official - OpenAI
- Combined
- $5.50in + out per 1M
- Last checked
- 2026-09-17