o4-mini pricing
OpenAI · list prices as of 2026-09-29
| Input | $1.10 per 1M tokens |
|---|---|
| Output | $4.40 per 1M tokens |
| Cached input (read) | $0.28 per 1M tokens |
| Batch / async | 50% off |
| Context window | 200K tokens |
| Longest answer | 100K tokens |
What a call costs
| Typical call | Input tokens | Output tokens | Per call | Per month at 1,000 a day |
|---|---|---|---|---|
| Chat reply | 1,000 | 300 | $0.00242 | $72.60 |
| Document summary | 6,000 | 400 | $0.00836 | $250.80 |
| Code change | 3,000 | 1,200 | $0.00858 | $257.40 |
No caching or batch discount. Your own prompt will differ: count it exactly below.
Price your own prompt on o4-miniSimilarly priced models
- o3-mini (OpenAI): about the same
- Claude Haiku 4.5 (Anthropic): 1.0× more
- DeepSeek V4 Pro (DeepSeek): 1.0× more
- GPT-5.4 mini (OpenAI): 1.2× cheaper
- Grok 4.20 (xAI): 1.2× cheaper
Questions
How much does o4-mini cost?
o4-mini costs $1.10 per million input tokens and $4.40 per million output tokens, as of 2026-09-29.
How much is one o4-mini call?
A call with 1,000 input tokens and a 300-token answer costs about $0.00242, or $72.60 a month at 1,000 calls a day.
How big is the o4-mini context window?
200,000 tokens.