openai
OpenAI: o3 Mini API Pricing
OpenAI: o3 Mini costs $1.10 per 1M input tokens and $4.40 per 1M output tokens (cache reads: $0.550). Context window: 200K. Prices verified 2026-08-23 Β· source
Input / 1M tokens
$1.10
Output / 1M tokens
$4.40
Context window
200K
Max output
100K
What would OpenAI: o3 Mini cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $26.40 |
| Coding agent | 5,000 | 8,000 / 2,000 | $88.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $198.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $52.80 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About OpenAI: o3 Mini
OpenAI o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and coding. This model supports the `reasoning_effort` parameter, which can be set to...
Compare OpenAI: o3 Mini with
Official resources
- OpenAI: o3 Mini on OpenRouter β live endpoint, pricing source of record.
- Get an OpenRouter API key β β one key, every model including Mini. Free credits on signup.
- Shred your current bill β paste a CSV and see if switching saves money.