At 8 requests/user/day (totaling 24,000,000 queries/mo), running Agentic workflow on GPT-5.3 Codex costs $1,201,200.00 / month ($12.012 / user / mo).
Total expected API invoice for 100,000 Active Users generating 24,000,000 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 (100,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| GPT-5.3 Codex (Current) | openai | $1,201,200.00 | $12.012 | $14,414,400.00 | 256,000 |
| DeepSeek Coder V2.5 | deepseek | $65,856.00 | $0.6586 | $790,272.00 | 128,000 |
| Codestral 2501 | mistral | $151,920.00 | $1.519 | $1,823,040.00 | 256,000 |
| Grok Build 0.1 | xai | $532,800.00 | $5.328 | $6,393,600.00 | 256,000 |
| Qwen 2.5 Coder 32B | qwen | $101,280.00 | $1.013 | $1,215,360.00 | 128,000 |
| DeepInfra — Qwen 2.5 Coder 32B | deepinfra | $85,440.00 | $0.8544 | $1,025,280.00 | 128,000 |
At 8 queries per user/day with GPT-5.3 Codex, the estimated cost is $12.012 per monthly active user (MAU). Total monthly bill for 100,000 Active Users is $1,201,200.00.
Assuming a 65% cache hit rate on repeated system and context tokens, prompt caching saves $982,800.00 per month ($11,793,600.00/year) on GPT-5.3 Codex.
With a direct COGS of $12.012 per user/month on GPT-5.3 Codex, charging at least $60.06 per user/month ensures an 80%+ software gross margin.