At 4 requests/user/day (totaling 1,200 queries/mo), running Document summarization on DeepSeek V4 Flash costs $12.872 / month ($1.287 / user / mo).
Total expected API invoice for 10 Active Users generating 1,200 queries.
Direct inference cost per MAU to model your SaaS pricing tiers and gross margins.
Savings generated by exploiting 10% cache hits on prompt context.
| Model | Provider | Monthly Spend (10 Active Users) | Cost / User / Mo | Annual Spend | Context Limit |
|---|---|---|---|---|---|
| DeepSeek V4 Flash (Current) | deepseek | $12.872 | $1.287 | $154.469 | 1,000,000 |
| GPT-5.6 Luna | openai | $6.324 | $0.6324 | $75.888 | 1,050,000 |
| GPT-5.4 mini | openai | $23.715 | $2.372 | $284.58 | 256,000 |
| GPT-5.4 nano | openai | $6.36 | $0.636 | $76.32 | 128,000 |
| GPT-4o mini | openai | $4.707 | $0.4707 | $56.484 | 128,000 |
| Claude Haiku 4.5 | anthropic | $30.90 | $3.09 | $370.80 | 1,000,000 |
At 4 queries per user/day with DeepSeek V4 Flash, the estimated cost is $1.287 per monthly active user (MAU). Total monthly bill for 10 Active Users is $12.872.
Assuming a 10% cache hit rate on repeated system and context tokens, prompt caching saves $1.278 per month ($15.336/year) on DeepSeek V4 Flash.
With a direct COGS of $1.287 per user/month on DeepSeek V4 Flash, charging at least $6.436 per user/month ensures an 80%+ software gross margin.