# Notebook Sessions Are Now Completely Free

Explore and experiment freely in Bifrost notebooks - your credits now go entirely to rendering.

Notebook sessions are now completely free.

Building a good synthetic dataset means iterating: placing assets, tuning sensors, adjusting weather, checking the output, and going again. That exploration shouldn't come with a meter running.

Here's why we made the change:

- We want the platform to be as accessible and developer-friendly as possible
- We want you to explore and experiment freely, without worrying about credit burn

Your credits are now fully reserved for rendering - the part that actually produces your data.

## What's New

- Notebook sessions cost nothing. Open a notebook, build scenes, and iterate as long as you need
- Credits only apply to renders
- Online renders now cover the first 10 frames of your scenario - built for quick scene validation
- Offline renders handle full dataset generation, up to 1,000 frames per job

### One mental model: test online, generate offline

Bifrost has 2 render modes with different purposes:

**Online - run the cell directly in the notebook.** Instant renders on a live instance, limited to the first 10 frames of your scenario. Ideal for testing your scene setup: camera placement, asset positions, lighting, sensor config. See the result, tweak, rerun.

**Offline - send the job with the render button.** Dispatched to a queue, more stable, with built-in retries. Best for generating full datasets, up to 1,000 frames per job.

Online renders were always meant for quick scene validation, not full dataset generation - the 10-frame limit makes that split explicit. Validate your scenario online in seconds, then dispatch the full job offline and let the queue do the work.

### What this means for your workflow

Prototype without hesitation. Spin up a notebook, try 5 scene variations, validate each one with a 10-frame online render - all free. When the scene looks right, send it offline and spend your credits where they count: on the dataset itself.

## Start exploring

Free sessions are live for all users now. Open a notebook and start building.