At 15 requests/user/day (totaling 2,250,000 queries/mo), running Translation on o3-pro (Frontier Reasoning) costs $1,184,625.00 / month ($236.925 / user / mo).
Total expected API invoice for 5,000 Active Users generating 2,250,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 15% cache hits on prompt context.
| Model | Provider | Monthly Spend (5,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| o3-pro (Frontier Reasoning) (Current) | openai | $1,184,625.00 | $236.925 | $14,215,500.00 | 1,000,000 |
| GPT-5.6 Sol | openai | $419,906.25 | $83.981 | $5,038,875.00 | 1,050,000 |
| GPT-5.6 Cyber | openai | $1,049,765.625 | $209.953 | $12,597,187.50 | 1,050,000 |
| GPT-5.5 Standard | openai | $419,906.25 | $83.981 | $5,038,875.00 | 512,000 |
| GPT-5.5 Pro | openai | $2,519,437.50 | $503.888 | $30,233,250.00 | 512,000 |
| o3 (Reasoning Frontier) | openai | $592,312.50 | $118.463 | $7,107,750.00 | 1,050,000 |
At 15 queries per user/day with o3-pro (Frontier Reasoning), the estimated cost is $236.925 per monthly active user (MAU). Total monthly bill for 5,000 Active Users is $1,184,625.00.
Assuming a 15% cache hit rate on repeated system and context tokens, prompt caching saves $30,375.00 per month ($364,500.00/year) on o3-pro (Frontier Reasoning).
With a direct COGS of $236.925 per user/month on o3-pro (Frontier Reasoning), charging at least $1,184.625 per user/month ensures an 80%+ software gross margin.