At 8 requests/user/day (totaling 12,000 queries/mo), running Agentic workflow on GPT-5.3 Codex costs $600.60 / month ($12.012 / user / mo).
Total expected API invoice for 50 Active Users generating 12,000 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 (50 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| GPT-5.3 Codex (Current) | openai | $600.60 | $12.012 | $7,207.20 | 256,000 |
| DeepSeek Coder V2.5 | deepseek | $32.928 | $0.6586 | $395.136 | 128,000 |
| Codestral 2501 | mistral | $75.96 | $1.519 | $911.52 | 256,000 |
| Grok Build 0.1 | xai | $266.40 | $5.328 | $3,196.80 | 256,000 |
| Qwen 2.5 Coder 32B | qwen | $50.64 | $1.013 | $607.68 | 128,000 |
| DeepInfra — Qwen 2.5 Coder 32B | deepinfra | $42.72 | $0.8544 | $512.64 | 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 50 Active Users is $600.60.
Assuming a 65% cache hit rate on repeated system and context tokens, prompt caching saves $491.40 per month ($5,896.80/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.