At 6 requests/user/day (totaling 9,000 queries/mo), running Customer support chatbot on Amazon Nova Pro costs $22.05 / month ($0.441 / user / mo).
Total expected API invoice for 50 Active Users generating 9,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 70% cache hits on prompt context.
| Model | Provider | Monthly Spend (50 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Amazon Nova Pro (Current) | amazon | $22.05 | $0.441 | $264.60 | 300,000 |
| GPT-5.6 Terra | openai | $61.11 | $1.222 | $733.32 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $76.388 | $1.528 | $916.65 | 256,000 |
| o3-mini | openai | $36.383 | $0.7277 | $436.59 | 200,000 |
| o4-mini | openai | $30.319 | $0.6064 | $363.825 | 256,000 |
| o1-mini | openai | $36.383 | $0.7277 | $436.59 | 128,000 |
At 6 queries per user/day with Amazon Nova Pro, the estimated cost is $0.441 per monthly active user (MAU). Total monthly bill for 50 Active Users is $22.05.
Assuming a 70% cache hit rate on repeated system and context tokens, prompt caching saves $13.23 per month ($158.76/year) on Amazon Nova Pro.
With a direct COGS of $0.441 per user/month on Amazon Nova Pro, charging at least $2.205 per user/month ensures an 80%+ software gross margin.