At 6 requests/user/day (totaling 180,000 queries/mo), running Customer support chatbot on OpenRouter Auto-Best Router costs $819.00 / month ($0.819 / user / mo).
Total expected API invoice for 1,000 Active Users generating 180,000 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 (1,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| OpenRouter Auto-Best Router (Current) | openrouter | $819.00 | $0.819 | $9,828.00 | 1,000,000 |
| GPT-5.6 Terra | openai | $1,222.20 | $1.222 | $14,666.40 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $1,527.75 | $1.528 | $18,333.00 | 256,000 |
| o3-mini | openai | $727.65 | $0.7277 | $8,731.80 | 200,000 |
| o4-mini | openai | $606.375 | $0.6064 | $7,276.50 | 256,000 |
| o1-mini | openai | $727.65 | $0.7277 | $8,731.80 | 128,000 |
At 6 queries per user/day with OpenRouter Auto-Best Router, the estimated cost is $0.819 per monthly active user (MAU). Total monthly bill for 1,000 Active Users is $819.00.
Assuming a 70% 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 $0.819 per user/month on OpenRouter Auto-Best Router, charging at least $4.095 per user/month ensures an 80%+ software gross margin.