At 40 requests/user/day (totaling 60,000,000 queries/mo), running AI coding assistant on Gemma 2 9B Instruct costs $168,000.00 / month ($3.36 / 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 |
|---|---|---|---|---|---|
| Gemma 2 9B Instruct (Current) | $168,000.00 | $3.36 | $2,016,000.00 | 8,192 | |
| GPT-5.6 Luna | openai | $210,240.00 | $4.205 | $2,522,880.00 | 1,050,000 |
| GPT-5.4 mini | openai | $788,400.00 | $15.768 | $9,460,800.00 | 256,000 |
| GPT-5.4 nano | openai | $216,240.00 | $4.325 | $2,594,880.00 | 128,000 |
| GPT-4o mini | openai | $147,600.00 | $2.952 | $1,771,200.00 | 128,000 |
| Claude Haiku 4.5 | anthropic | $931,200.00 | $18.624 | $11,174,400.00 | 1,000,000 |
At 40 queries per user/day with Gemma 2 9B Instruct, the estimated cost is $3.36 per monthly active user (MAU). Total monthly bill for 50,000 Active Users is $168,000.00.
Assuming a 60% cache hit rate on repeated system and context tokens, prompt caching saves $0.00 per month ($0.00/year) on Gemma 2 9B Instruct.
With a direct COGS of $3.36 per user/month on Gemma 2 9B Instruct, charging at least $16.80 per user/month ensures an 80%+ software gross margin.