Calculator
AI app cost calculator
AI app cost calculator is built for SaaS builders modeling active users, request volume, input tokens, output tokens, and selected model prices. Use it to decide whether a model choice supports the product's monthly budget and per-user margin. Keep the workload assumptions consistent across options, then inspect the cited prices and last-checked dates before committing budget.
Open the calculator - Estimate monthly AI model spend →
The decision this page helps you make
Estimate monthly LLM API spend from users, requests, input tokens, output tokens, model prices, caching and retries. Free calculator with source-backed pricing.
The practical question is whether a model choice supports the product's monthly budget and per-user margin. Use the same workload assumptions for every option so the comparison reflects billing differences instead of different inputs.
Start with these inputs
- Traffic: Active users and requests per user.
- Token mix: Average input and output tokens per request.
- Output: Daily, monthly, annual, and per-user model spend.
What the result includes
| Area | What ByteCosts shows |
|---|---|
| Traffic | Active users and requests per user |
| Token mix | Average input and output tokens per request |
| Output | Daily, monthly, annual, and per-user model spend |
How to use the result
- Run a realistic base case and a heavier-usage case before choosing a provider or plan.
- Compare alternatives with identical traffic, token, seat, runtime, and retry assumptions.
- Open the cited provider source before a purchase or production billing decision.
Formula
monthlyCost = inputTokensM * inputPricePerMTok + outputTokensM * outputPricePerMTok, with optional adjustments for caching, retries, and per-user volume.
Assumptions
- Input and output token counts are user-entered workload assumptions.
- Model prices come from the source-backed provider pricing index.
- Prompt caching, retries, and gateway fees are included only when modeled in the tool or scenario.
- The estimate excludes taxes, negotiated discounts, and production-specific rate limits.
Example scenario
For an AI chatbot, multiply active users by requests per user, then multiply the resulting input and output token volume by the selected model's per-million-token prices. Compare the average user and a heavy user separately.
How to read the example
| Step | Example input | What to inspect |
|---|---|---|
| Average user | 2,500 users with 4 requests per user per day | Monthly model spend and per-user cost |
| Heavy user | Same token mix with higher request volume | Power-user burn risk |
| Next step | Carry the workload into Scenario Studio | Retries, cache, gateway, and tax layers |
Interpretation guide
- If output cost dominates, shorten responses or route routine requests to a cheaper capable model.
- If per-user cost is close to plan revenue, test the same workload in the gross-margin calculator.
- Use the result as a monthly planning number, then compare it with production logs after launch.
Limitations
AI app cost calculator is a planning tool, not a billing guarantee. It uses the visible assumptions and committed source-backed data available at the page's last update.
Check the cited provider page and your own production logs before signing a contract, changing price, or committing infrastructure spend.
Frequently asked questions
What should I enter first in AI app cost calculator?
Start with traffic: active users and requests per user. Add optional adjustments only after the base case is understandable.
Is the result a guaranteed invoice forecast?
No. It is a planning estimate based on the visible workload assumptions and source-backed public prices. Taxes, negotiated discounts, undocumented limits, and production behavior can change the final invoice.
Where do the prices and assumptions come from?
ByteCosts keeps provider source links, confidence information, and last-checked dates attached to pricing records. User-entered workload assumptions remain separate from published vendor facts.
AI app cost calculator. ByteCosts. https://bytecosts.com/tools/ai-cost-calculator/