At 8 requests/user/day (totaling 1,200,000 queries/mo), running Agentic workflow on OpenRouter Auto-Best Router costs $53,400.00 / month ($10.68 / user / mo).
Total expected API invoice for 5,000 Active Users generating 1,200,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 65% cache hits on prompt context.
| Model | Provider | Monthly Spend (5,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| OpenRouter Auto-Best Router (Current) | openrouter | $53,400.00 | $10.68 | $640,800.00 | 1,000,000 |
| GPT-5.6 Terra | openai | $61,440.00 | $12.288 | $737,280.00 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $76,800.00 | $15.36 | $921,600.00 | 256,000 |
| o3-mini | openai | $43,560.00 | $8.712 | $522,720.00 | 200,000 |
| o4-mini | openai | $34,980.00 | $6.996 | $419,760.00 | 256,000 |
| o1-mini | openai | $43,560.00 | $8.712 | $522,720.00 | 128,000 |
At 8 queries per user/day with OpenRouter Auto-Best Router, the estimated cost is $10.68 per monthly active user (MAU). Total monthly bill for 5,000 Active Users is $53,400.00.
Assuming a 65% cache hit rate on repeated system and context tokens, prompt caching saves $0.00 per month ($0.00/year) on OpenRouter Auto-Best Router.
With a direct COGS of $10.68 per user/month on OpenRouter Auto-Best Router, charging at least $53.40 per user/month ensures an 80%+ software gross margin.