# AI video API cost calculator

> Calculate realtime AI video API cost by model, session duration and concurrent users. Compare published rates with a free browser-based estimator.

Source: https://windflow.online/tools/ai-video-cost-calculator · Windflow Labs

Free browser tool; no account required.

## How it works

Estimate Windflow's ready-session meter using the published model rate. Cost equals rate per ready second × ready seconds per session × independent sessions. Shared viewers do not add an independent generation meter. Queueing and startup are excluded; ready time can continue while delivery is paused.

1. Choose the model you intend to run.
2. Enter ready minutes per session and independent sessions per day.
3. Compare daily and monthly generation cost. Adjust duration or concurrency before launching.

## FAQ

### How do I calculate an AI video API session cost?

Multiply the model's published ready-second rate by its ready duration and the number of independent sessions. This calculator uses Windflow's public model catalog.

### Do concurrent sessions change the rate?

Each independent session carries its own meter. Concurrency changes total cost and required capacity, rather than the listed per-second rate.

### Does this include hosting my own GPU?

The estimate covers Windflow's published session meter. Self-hosted GPU rental, staff and infrastructure need a separate estimate.

## Related resources

- [Current pricing](https://windflow.online/pricing)
- [How ready-second billing works](https://windflow.online/guides/how-per-second-pricing-works)