At 15 requests/user/day (totaling 22,500,000 queries/mo), running Translation on o3 (Reasoning Frontier) costs $5,923,125.00 / month ($118.463 / user / mo).
Total expected API invoice for 50,000 Active Users generating 22,500,000 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 (50,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| o3 (Reasoning Frontier) (Current) | openai | $5,923,125.00 | $118.463 | $71,077,500.00 | 1,050,000 |
| GPT-5.6 Sol | openai | $4,199,062.50 | $83.981 | $50,388,750.00 | 1,050,000 |
| GPT-5.6 Cyber | openai | $10,497,656.25 | $209.953 | $125,971,875.00 | 1,050,000 |
| GPT-5.5 Standard | openai | $4,199,062.50 | $83.981 | $50,388,750.00 | 512,000 |
| GPT-5.5 Pro | openai | $25,194,375.00 | $503.888 | $302,332,500.00 | 512,000 |
| o3-pro (Frontier Reasoning) | openai | $11,846,250.00 | $236.925 | $142,155,000.00 | 1,000,000 |
At 15 queries per user/day with o3 (Reasoning Frontier), the estimated cost is $118.463 per monthly active user (MAU). Total monthly bill for 50,000 Active Users is $5,923,125.00.
Assuming a 15% cache hit rate on repeated system and context tokens, prompt caching saves $151,875.00 per month ($1,822,500.00/year) on o3 (Reasoning Frontier).
With a direct COGS of $118.463 per user/month on o3 (Reasoning Frontier), charging at least $592.313 per user/month ensures an 80%+ software gross margin.