At 15 requests/user/day (totaling 22,500 queries/mo), running Translation on GPT-4o mini costs $89.859 / month ($1.797 / user / mo).
Total expected API invoice for 50 Active Users generating 22,500 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 (50 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| GPT-4o mini (Current) | openai | $89.859 | $1.797 | $1,078.313 | 128,000 |
| GPT-5.6 Luna | openai | $167.962 | $3.359 | $2,015.55 | 1,050,000 |
| GPT-5.4 mini | openai | $629.859 | $12.597 | $7,558.313 | 256,000 |
| GPT-5.4 nano | openai | $174.15 | $3.483 | $2,089.80 | 128,000 |
| Claude Haiku 4.5 | anthropic | $716.063 | $14.321 | $8,592.75 | 1,000,000 |
| Claude 3.5 Haiku | anthropic | $572.85 | $11.457 | $6,874.20 | 200,000 |
At 15 queries per user/day with GPT-4o mini, the estimated cost is $1.797 per monthly active user (MAU). Total monthly bill for 50 Active Users is $89.859.
Assuming a 15% cache hit rate on repeated system and context tokens, prompt caching saves $1.266 per month ($15.188/year) on GPT-4o mini.
With a direct COGS of $1.797 per user/month on GPT-4o mini, charging at least $8.986 per user/month ensures an 80%+ software gross margin.