# Reflection: Beam 1.0 501B A23B

Provider: reflection  
Category: llm  
Model ID: `reflection/beam-1.0-501b-a23b`

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...

## Specs

- Context length: 1048576 tokens
- Max output: 943718 tokens
- Modalities: text
- Released: 2026-10-16

## Pricing

- Input: $1.00 per million tokens
- Output: $3.00 per million tokens

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Last verified: 2026-10-19T02:30:34.239Z  
Canonical URL: https://switchy.build/directory/models/beam-1-0-501b-a23b