At 200 requests/user/day (totaling 3,000,000 queries/mo), running Data extraction & tagging on Grok 4.5 costs $14,460.00 / month ($28.92 / user / mo).
Total expected API invoice for 500 Active Users generating 3,000,000 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 (500 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Grok 4.5 (Current) | xai | $14,460.00 | $28.92 | $173,520.00 | 500,000 |
| GPT-5.6 Terra | openai | $18,840.00 | $37.68 | $226,080.00 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $23,550.00 | $47.10 | $282,600.00 | 256,000 |
| o3-mini | openai | $9,240.00 | $18.48 | $110,880.00 | 200,000 |
| o4-mini | openai | $8,910.00 | $17.82 | $106,920.00 | 256,000 |
| o1-mini | openai | $9,240.00 | $18.48 | $110,880.00 | 128,000 |
At 200 queries per user/day with Grok 4.5, the estimated cost is $28.92 per monthly active user (MAU). Total monthly bill for 500 Active Users is $14,460.00.
Assuming a 20% cache hit rate on repeated system and context tokens, prompt caching saves $2,040.00 per month ($24,480.00/year) on Grok 4.5.
With a direct COGS of $28.92 per user/month on Grok 4.5, charging at least $144.60 per user/month ensures an 80%+ software gross margin.