At 15 requests/user/day (totaling 45,000,000 queries/mo), running Translation on Gemma 4 31B Instruct costs $241,875.00 / month ($2.419 / user / mo).
Total expected API invoice for 100,000 Active Users generating 45,000,000 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 (100,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Gemma 4 31B Instruct (Current) | $241,875.00 | $2.419 | $2,902,500.00 | 128,000 | |
| GPT-5.6 Terra | openai | $3,359,250.00 | $33.593 | $40,311,000.00 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $4,199,062.50 | $41.991 | $50,388,750.00 | 256,000 |
| o3-mini | openai | $1,317,937.50 | $13.179 | $15,815,250.00 | 200,000 |
| o4-mini | openai | $1,308,656.25 | $13.087 | $15,703,875.00 | 256,000 |
| o1-mini | openai | $1,317,937.50 | $13.179 | $15,815,250.00 | 128,000 |
At 15 queries per user/day with Gemma 4 31B Instruct, the estimated cost is $2.419 per monthly active user (MAU). Total monthly bill for 100,000 Active Users is $241,875.00.
Assuming a 15% cache hit rate on repeated system and context tokens, prompt caching saves $0.00 per month ($0.00/year) on Gemma 4 31B Instruct.
With a direct COGS of $2.419 per user/month on Gemma 4 31B Instruct, charging at least $12.094 per user/month ensures an 80%+ software gross margin.