At 15 requests/user/day (totaling 1,125,000 queries/mo), running Translation on o3 (Reasoning Frontier) costs $296,156.25 / month ($118.463 / user / mo).
Total expected API invoice for 2,500 Active Users generating 1,125,000 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 (2,500 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| o3 (Reasoning Frontier) (Current) | openai | $296,156.25 | $118.463 | $3,553,875.00 | 1,050,000 |
| GPT-5.6 Sol | openai | $209,953.125 | $83.981 | $2,519,437.50 | 1,050,000 |
| GPT-5.6 Cyber | openai | $524,882.813 | $209.953 | $6,298,593.75 | 1,050,000 |
| GPT-5.5 Standard | openai | $209,953.125 | $83.981 | $2,519,437.50 | 512,000 |
| GPT-5.5 Pro | openai | $1,259,718.75 | $503.888 | $15,116,625.00 | 512,000 |
| o3-pro (Frontier Reasoning) | openai | $592,312.50 | $236.925 | $7,107,750.00 | 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 2,500 Active Users is $296,156.25.
Assuming a 15% cache hit rate on repeated system and context tokens, prompt caching saves $7,593.75 per month ($91,125.00/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.