At 200 requests/user/day (totaling 6,000,000 queries/mo), running Data extraction & tagging on o4-mini costs $17,820.00 / month ($17.82 / user / mo).
Total expected API invoice for 1,000 Active Users generating 6,000,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 20% cache hits on prompt context.
| Model | Provider | Monthly Spend (1,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| o4-mini (Current) | openai | $17,820.00 | $17.82 | $213,840.00 | 256,000 |
| GPT-5.6 Terra | openai | $37,680.00 | $37.68 | $452,160.00 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $47,100.00 | $47.10 | $565,200.00 | 256,000 |
| o3-mini | openai | $18,480.00 | $18.48 | $221,760.00 | 200,000 |
| o1-mini | openai | $18,480.00 | $18.48 | $221,760.00 | 128,000 |
| Claude Sonnet 5 | anthropic | $34,680.00 | $34.68 | $416,160.00 | 1,000,000 |
At 200 queries per user/day with o4-mini, the estimated cost is $17.82 per monthly active user (MAU). Total monthly bill for 1,000 Active Users is $17,820.00.
Assuming a 20% cache hit rate on repeated system and context tokens, prompt caching saves $1,980.00 per month ($23,760.00/year) on o4-mini.
With a direct COGS of $17.82 per user/month on o4-mini, charging at least $89.10 per user/month ensures an 80%+ software gross margin.