At 40 requests/user/day (totaling 3,000,000 queries/mo), running AI coding assistant on Claude 3.7 Sonnet (Hybrid Reasoning) costs $139,680.00 / month ($55.872 / user / mo).
AI coding assistant for a 2,500 active users (series a product) audience means 100,000 requests per day on average, each carrying 12,000 input and 2,000 output tokens at a 60% cacheable share — so the effective per-request cost on Claude 3.7 Sonnet (Hybrid Reasoning) is $0.0466, of which $58,320.00/mo comes back from prompt caching. Per active user that's $55.872/mo — the number to hold against your pricing tier and gross margin. Charging at least $279.36/user/mo keeps gross margin at or above 80%.
Quick answer
For 2,500 Active Users, AI coding assistant on Claude 3.7 Sonnet (Hybrid Reasoning) is modeled at 3,000,000 requests per month, costing $139,680.00 per month or $55.872 per active user.
Method & trust
This projection combines the selected active-user tier, requests per user per day, input/output tokens per request, and the modeled cache share. It is an operating estimate, not a provider invoice; production traffic and retries should be measured against it.
Total expected API invoice for 2,500 Active Users generating 3,000,000 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 (2,500 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| Claude 3.7 Sonnet (Hybrid Reasoning) (Current) | anthropic | $139,680.00 | $55.872 | $1,676,160.00 | 200,000 |
| GPT-5.6 Sol | openai | $262,800.00 | $105.12 | $3,153,600.00 | 1,050,000 |
| GPT-5.6 Cyber | openai | $657,000.00 | $262.80 | $7,884,000.00 | 1,050,000 |
| GPT-5.5 Standard | openai | $262,800.00 | $105.12 | $3,153,600.00 | 512,000 |
| GPT-5.5 Pro | openai | $1,576,800.00 | $630.72 | $18,921,600.00 | 512,000 |
| o3-pro (Frontier Reasoning) | openai | $811,200.00 | $324.48 | $9,734,400.00 | 1,000,000 |
At 40 queries per user/day with Claude 3.7 Sonnet (Hybrid Reasoning), the estimated cost is $55.872 per monthly active user (MAU). Total monthly bill for 2,500 Active Users is $139,680.00.
Assuming a 60% cache hit rate on repeated system and context tokens, prompt caching saves $58,320.00 per month ($699,840.00/year) on Claude 3.7 Sonnet (Hybrid Reasoning).
With a direct COGS of $55.872 per user/month on Claude 3.7 Sonnet (Hybrid Reasoning), charging at least $279.36 per user/month ensures an 80%+ software gross margin.