At 20 requests/user/day (totaling 30,000 queries/mo), running Content generation on Mistral Small 4 costs $24.228 / month ($0.4846 / user / mo).
Content generation for a 50 active users (private beta) audience means 1,000 requests per day on average, each carrying 800 input and 1,200 output tokens at a 30% cacheable share — so the effective per-request cost on Mistral Small 4 is $0.000808, of which $0.972/mo comes back from prompt caching. Per active user that's $0.4846/mo — the number to hold against your pricing tier and gross margin. Charging at least $2.423/user/mo keeps gross margin at or above 80%.
Quick answer
For 50 Active Users, Content generation on Mistral Small 4 is modeled at 30,000 requests per month, costing $24.228 per month or $0.4846 per active user.
Method & trust
This projection combines the selected active-user tier, requests per user per day, input/output tokens per request, and the modeled cache share. It is an operating estimate, not a provider invoice; production traffic and retries should be measured against it.
Total expected API invoice for 50 Active Users generating 30,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 30% cache hits on prompt context.
| Model | Provider | Monthly Spend (50 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Mistral Small 4 (Current) | mistral | $24.228 | $0.4846 | $290.736 | 128,000 |
| GPT-5.6 Luna | openai | $46.704 | $0.9341 | $560.448 | 1,050,000 |
| GPT-5.4 mini | openai | $175.14 | $3.503 | $2,101.68 | 256,000 |
| GPT-5.4 nano | openai | $48.504 | $0.9701 | $582.048 | 128,000 |
| GPT-4o mini | openai | $24.66 | $0.4932 | $295.92 | 128,000 |
| Claude Haiku 4.5 | anthropic | $197.52 | $3.95 | $2,370.24 | 1,000,000 |
At 20 queries per user/day with Mistral Small 4, the estimated cost is $0.4846 per monthly active user (MAU). Total monthly bill for 50 Active Users is $24.228.
Assuming a 30% cache hit rate on repeated system and context tokens, prompt caching saves $0.972 per month ($11.664/year) on Mistral Small 4.
With a direct COGS of $0.4846 per user/month on Mistral Small 4, charging at least $2.423 per user/month ensures an 80%+ software gross margin.