At 8 requests/user/day (totaling 600,000 queries/mo), running Agentic workflow on GPT-5.4 mini costs $11,520.00 / month ($4.608 / user / mo).
Total expected API invoice for 2,500 Active Users generating 600,000 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 65% cache hits on prompt context.
| Model | Provider | Monthly Spend (2,500 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| GPT-5.4 mini (Current) | openai | $11,520.00 | $4.608 | $138,240.00 | 256,000 |
| GPT-5.6 Luna | openai | $3,072.00 | $1.229 | $36,864.00 | 1,050,000 |
| GPT-5.4 nano | openai | $3,117.00 | $1.247 | $37,404.00 | 128,000 |
| GPT-4o mini | openai | $2,970.00 | $1.188 | $35,640.00 | 128,000 |
| Claude Haiku 4.5 | anthropic | $14,460.00 | $5.784 | $173,520.00 | 1,000,000 |
| Claude 3.5 Haiku | anthropic | $11,568.00 | $4.627 | $138,816.00 | 200,000 |
At 8 queries per user/day with GPT-5.4 mini, the estimated cost is $4.608 per monthly active user (MAU). Total monthly bill for 2,500 Active Users is $11,520.00.
Assuming a 65% cache hit rate on repeated system and context tokens, prompt caching saves $10,530.00 per month ($126,360.00/year) on GPT-5.4 mini.
With a direct COGS of $4.608 per user/month on GPT-5.4 mini, charging at least $23.04 per user/month ensures an 80%+ software gross margin.