At 40 requests/user/day (totaling 60,000 queries/mo), running AI coding assistant on Grok Build 0.1 costs $614.40 / month ($12.288 / user / mo).
Total expected API invoice for 50 Active Users generating 60,000 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 (50 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Grok Build 0.1 (Current) | xai | $614.40 | $12.288 | $7,372.80 | 256,000 |
| GPT-5.3 Codex | openai | $2,259.60 | $45.192 | $27,115.20 | 256,000 |
| DeepSeek Coder V2.5 | deepseek | $79.968 | $1.599 | $959.616 | 128,000 |
| Codestral 2501 | mistral | $207.36 | $4.147 | $2,488.32 | 256,000 |
| Qwen 2.5 Coder 32B | qwen | $138.24 | $2.765 | $1,658.88 | 128,000 |
| DeepInfra — Qwen 2.5 Coder 32B | deepinfra | $86.40 | $1.728 | $1,036.80 | 128,000 |
At 40 queries per user/day with Grok Build 0.1, the estimated cost is $12.288 per monthly active user (MAU). Total monthly bill for 50 Active Users is $614.40.
Assuming a 60% cache hit rate on repeated system and context tokens, prompt caching saves $345.60 per month ($4,147.20/year) on Grok Build 0.1.
With a direct COGS of $12.288 per user/month on Grok Build 0.1, charging at least $61.44 per user/month ensures an 80%+ software gross margin.