At 40 requests/user/day (totaling 60,000,000 queries/mo), running AI coding assistant on Mistral Large 3 costs $345,600.00 / month ($6.912 / user / mo).
Total expected API invoice for 50,000 Active Users generating 60,000,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 60% cache hits on prompt context.
| Model | Provider | Monthly Spend (50,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Mistral Large 3 (Current) | mistral | $345,600.00 | $6.912 | $4,147,200.00 | 1,000,000 |
| GPT-5.6 Sol | openai | $5,256,000.00 | $105.12 | $63,072,000.00 | 1,050,000 |
| GPT-5.6 Cyber | openai | $13,140,000.00 | $262.80 | $157,680,000.00 | 1,050,000 |
| GPT-5.5 Standard | openai | $5,256,000.00 | $105.12 | $63,072,000.00 | 512,000 |
| GPT-5.5 Pro | openai | $31,536,000.00 | $630.72 | $378,432,000.00 | 512,000 |
| o3-pro (Frontier Reasoning) | openai | $16,224,000.00 | $324.48 | $194,688,000.00 | 1,000,000 |
At 40 queries per user/day with Mistral Large 3, the estimated cost is $6.912 per monthly active user (MAU). Total monthly bill for 50,000 Active Users is $345,600.00.
Assuming a 60% cache hit rate on repeated system and context tokens, prompt caching saves $194,400.00 per month ($2,332,800.00/year) on Mistral Large 3.
With a direct COGS of $6.912 per user/month on Mistral Large 3, charging at least $34.56 per user/month ensures an 80%+ software gross margin.