# Beam 1.0 501B A23B NVFP4

Beam 1.0 501B A23B NVFP4 is a model from Reflection with open weights, first recorded on 21 Oct 2026; its release date is not established. The context window is 1,048,576 tokens.

- Developer: Reflection
- Id: reflection/Beam-1.0-501B-A23B-NVFP4
- Sighting: 2026-10-21T17:49:24.548Z
  - [evidence link](https://huggingface.co/reflection/Beam-1.0-501B-A23B-NVFP4)
- Status: API availability
- Canonical: https://alexgetman.com/models/reflection/beam-1-0-501b-a23b-nvfp4/

## Questions

### What is the context window of Beam 1.0 501B A23B NVFP4?

The context window is 1,048,576 tokens.

### Are the weights of Beam 1.0 501B A23B NVFP4 publicly available?

Yes. Reflection publishes the weights.

### When was Beam 1.0 501B A23B NVFP4 released?

Its release date is not established. Signal Forge first recorded it on 21 Oct 2026.

## Evidence links

- [huggingface-router](https://huggingface.co/reflection/Beam-1.0-501B-A23B-NVFP4)
- [review](https://huggingface.co/reflection/Beam-1.0-501B-A23B-NVFP4/blob/c5621fc926758c3fb0a2944645760bcdc17cf084/README.md)

## Signals