O3 Pro pricing
Source: litellm · updated 2026-10-27
Short answer: O3 Pro costs $20.00 per million input tokens and $80.00 per million output tokens. That is a 3:1 blended rate of $35.00 per million tokens, ranking it #698 of 704 tracked models by input price.
Price breakdown
| Metric | USD |
|---|---|
| Input, per 1M tokens | $20.00 |
| Output, per 1M tokens | $80.00 |
| Output รท input multiple | 4.00× |
| 3:1 blended, per 1M tokens | $35.00 |
| Context window | 200,000 tokens |
What a typical workload costs
| Monthly volume | Input cost | Output cost | Total | 1M in / 250K out | $20.00 | $20.00 | $40.00 |
|---|---|---|---|---|---|---|---|
| 10M in / 2.5M out | $200 | $200 | $400 | ||||
| 100M in / 25M out | $2,000 | $2,000 | $4,000 |
Other o3 models
| Model | Input | Output |
|---|---|---|
| O3 Mini | $1.10 | $4.40 |
| O3 | $2.00 | $8.00 |
| O3 Deep Research | $10.00 | $40.00 |
Cheaper alternatives
Next cheaper option: Claude Opus 4 at $15.00 per 1M input tokens. Next step up: GPT-4 at $30.00 per 1M input tokens.