At 15 requests/user/day (totaling 4,500,000 queries/mo), running Translation on Mistral Small 4 costs $17,769.375 / month ($1.777 / user / mo).
Translation for a 10,000 active users (scale-up saas) audience means 150,000 requests per day on average, each carrying 5,000 input and 5,500 output tokens at a 15% cacheable share — so the effective per-request cost on Mistral Small 4 is $0.003949, of which $455.625/mo comes back from prompt caching. Per active user that's $1.777/mo — the number to hold against your pricing tier and gross margin. Charging at least $8.885/user/mo keeps gross margin at or above 80%.
Quick answer
For 10,000 Active Users, Translation on Mistral Small 4 is modeled at 4,500,000 requests per month, costing $17,769.375 per month or $1.777 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 10,000 Active Users generating 4,500,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 15% cache hits on prompt context.
| Model | Provider | Monthly Spend (10,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Mistral Small 4 (Current) | mistral | $17,769.375 | $1.777 | $213,232.50 | 128,000 |
| GPT-5.6 Luna | openai | $33,592.50 | $3.359 | $403,110.00 | 1,050,000 |
| GPT-5.4 mini | openai | $125,971.875 | $12.597 | $1,511,662.50 | 256,000 |
| GPT-5.4 nano | openai | $34,830.00 | $3.483 | $417,960.00 | 128,000 |
| GPT-4o mini | openai | $17,971.875 | $1.797 | $215,662.50 | 128,000 |
| Claude Haiku 4.5 | anthropic | $143,212.50 | $14.321 | $1,718,550.00 | 1,000,000 |
At 15 queries per user/day with Mistral Small 4, the estimated cost is $1.777 per monthly active user (MAU). Total monthly bill for 10,000 Active Users is $17,769.375.
Assuming a 15% cache hit rate on repeated system and context tokens, prompt caching saves $455.625 per month ($5,467.50/year) on Mistral Small 4.
With a direct COGS of $1.777 per user/month on Mistral Small 4, charging at least $8.885 per user/month ensures an 80%+ software gross margin.