At 10 requests/user/day (totaling 3,000,000 queries/mo), running RAG / search-augmented answers on Grok 4.6 Flagship costs $39,000.00 / month ($3.90 / user / mo).
Total expected API invoice for 10,000 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 50% cache hits on prompt context.
| Model | Provider | Monthly Spend (10,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Grok 4.6 Flagship (Current) | xai | $39,000.00 | $3.90 | $468,000.00 | 500,000 |
| GPT-5.6 Sol | openai | $111,000.00 | $11.10 | $1,332,000.00 | 1,050,000 |
| GPT-5.6 Cyber | openai | $277,500.00 | $27.75 | $3,330,000.00 | 1,050,000 |
| GPT-5.5 Standard | openai | $111,000.00 | $11.10 | $1,332,000.00 | 512,000 |
| GPT-5.5 Pro | openai | $666,000.00 | $66.60 | $7,992,000.00 | 512,000 |
| o3-pro (Frontier Reasoning) | openai | $384,000.00 | $38.40 | $4,608,000.00 | 1,000,000 |
At 10 queries per user/day with Grok 4.6 Flagship, the estimated cost is $3.90 per monthly active user (MAU). Total monthly bill for 10,000 Active Users is $39,000.00.
Assuming a 50% cache hit rate on repeated system and context tokens, prompt caching saves $18,000.00 per month ($216,000.00/year) on Grok 4.6 Flagship.
With a direct COGS of $3.90 per user/month on Grok 4.6 Flagship, charging at least $19.50 per user/month ensures an 80%+ software gross margin.