At 40 requests/user/day (totaling 600,000 queries/mo), running AI coding assistant on Qwen 2.5 Max costs $12,979.20 / month ($25.958 / user / mo).
Total expected API invoice for 500 Active Users generating 600,000 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 (500 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Qwen 2.5 Max (Current) | qwen | $12,979.20 | $25.958 | $155,750.40 | 32,768 |
| GPT-5.6 Sol | openai | $52,560.00 | $105.12 | $630,720.00 | 1,050,000 |
| GPT-5.6 Cyber | openai | $131,400.00 | $262.80 | $1,576,800.00 | 1,050,000 |
| GPT-5.5 Standard | openai | $52,560.00 | $105.12 | $630,720.00 | 512,000 |
| GPT-5.5 Pro | openai | $315,360.00 | $630.72 | $3,784,320.00 | 512,000 |
| o3-pro (Frontier Reasoning) | openai | $162,240.00 | $324.48 | $1,946,880.00 | 1,000,000 |
At 40 queries per user/day with Qwen 2.5 Max, the estimated cost is $25.958 per monthly active user (MAU). Total monthly bill for 500 Active Users is $12,979.20.
Assuming a 60% cache hit rate on repeated system and context tokens, prompt caching saves $6,220.80 per month ($74,649.60/year) on Qwen 2.5 Max.
With a direct COGS of $25.958 per user/month on Qwen 2.5 Max, charging at least $129.792 per user/month ensures an 80%+ software gross margin.