# Beam (slim)

> Beam, a family of models by Reflection, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. Beam 1.0 is Reflection's open-weight reasoning model for coding and long-horizon agentic workflows. It uses a sparse mixture-of-experts…

- Full: https://www.anchorterminal.com/tools/beam-2.md (~500 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/tools/beam-2.json · canonical https://www.anchorterminal.com/tools/beam-2
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-16
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

# Beam

> Indexed, not reviewed: facts from OpenRouter and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: model family, by Reflection
- Category: Model APIs & inference (https://www.anchorterminal.com/categories/inference.md)
- Listed because: OpenRouter lists it, with prices from the providers that serve it.
- What OpenRouter says: Beam 1.0 is Reflection's open-weight reasoning model for coding and long-horizon agentic workflows. It uses a sparse mixture-of-experts architecture with 501B total and 23B active parameters per token, and a...

## Models (1)

| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |
| --- | --- | --- | --- | --- | --- | --- |
| Beam 1.0 501B A23B | `reflection/beam-1.0-501b-a23b` | 2026-10 | 1.05M | $1 | $3 | tools, structured output, reasoning, caching |

Prices and limits as OpenRouter lists them; a provider's own price can differ.

- Create a video and download its frames: https://www.anchorterminal.com/assets/listing-video/index.html?listing=beam-2
- JSON: https://www.anchorterminal.com/api/v1/tools/beam-2.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming