At 40 requests/user/day (totaling 1,200,000 queries/mo), running AI coding assistant on Claude Sonnet 5 costs $37,248.00 / month ($37.248 / user / mo).
Total expected API invoice for 1,000 Active Users generating 1,200,000 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 (1,000 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Claude Sonnet 5 (Current) | anthropic | $37,248.00 | $37.248 | $446,976.00 | 1,000,000 |
| GPT-5.6 Terra | openai | $42,048.00 | $42.048 | $504,576.00 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $52,560.00 | $52.56 | $630,720.00 | 256,000 |
| o3-mini | openai | $21,648.00 | $21.648 | $259,776.00 | 200,000 |
| o4-mini | openai | $19,272.00 | $19.272 | $231,264.00 | 256,000 |
| o1-mini | openai | $21,648.00 | $21.648 | $259,776.00 | 128,000 |
At 40 queries per user/day with Claude Sonnet 5, the estimated cost is $37.248 per monthly active user (MAU). Total monthly bill for 1,000 Active Users is $37,248.00.
Assuming a 60% cache hit rate on repeated system and context tokens, prompt caching saves $15,552.00 per month ($186,624.00/year) on Claude Sonnet 5.
With a direct COGS of $37.248 per user/month on Claude Sonnet 5, charging at least $186.24 per user/month ensures an 80%+ software gross margin.