At 8 requests/user/day (totaling 600,000 queries/mo), running Agentic workflow on o1-mini costs $21,780.00 / month ($8.712 / user / mo).
Total expected API invoice for 2,500 Active Users generating 600,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 65% cache hits on prompt context.
| Model | Provider | Monthly Spend (2,500 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| o1-mini (Current) | openai | $21,780.00 | $8.712 | $261,360.00 | 128,000 |
| GPT-5.6 Terra | openai | $30,720.00 | $12.288 | $368,640.00 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $38,400.00 | $15.36 | $460,800.00 | 256,000 |
| o3-mini | openai | $21,780.00 | $8.712 | $261,360.00 | 200,000 |
| o4-mini | openai | $17,490.00 | $6.996 | $209,880.00 | 256,000 |
| Claude Sonnet 5 | anthropic | $28,920.00 | $11.568 | $347,040.00 | 1,000,000 |
At 8 queries per user/day with o1-mini, the estimated cost is $8.712 per monthly active user (MAU). Total monthly bill for 2,500 Active Users is $21,780.00.
Assuming a 65% cache hit rate on repeated system and context tokens, prompt caching saves $8,580.00 per month ($102,960.00/year) on o1-mini.
With a direct COGS of $8.712 per user/month on o1-mini, charging at least $43.56 per user/month ensures an 80%+ software gross margin.