# Beam 1.0 501B A23B vs pulse-alpha - AI Model Comparison

- Page: https://opencode.ai/data/compare/reflection/beam-1-0-501b-a23b/unknown/pulse-alpha
- Updated: 2026-11-06T00:13:40.000Z

|  | Beam 1.0 501B A23B | pulse-alpha |
| --- | --- | --- |
| Lab | Reflection | Unknown |
| Context window | 1M | - |
| Max output | 131K | - |
| Input modalities | text | - |
| Reasoning | Yes | - |
| Tool calling | Yes | - |
| Open weights | Yes | - |
| Release date | 2026-10-05 | - |
| Input price per 1M tokens | $0.30 | - |
| Output price per 1M tokens | $1.00 | - |
| Cached input price per 1M tokens | $0.04 | - |
| OpenCode tokens: past 2 months | 18T | 1.2T |
| Share of all tokens | 1.3% | 0.1% |
| Rank by tokens last week | #4 | #7 |
| Unique users | 329K | 14K |
| Weekly retention | 72.0% | - |

Model pages: [Beam 1.0 501B A23B](https://opencode.ai/data/reflection/beam-1-0-501b-a23b.md), [pulse-alpha](https://opencode.ai/data/unknown/pulse-alpha.md)

## Methodology

- Updates: Aggregated every hour. Days and weeks use UTC.
- Tokens: Input, output, reasoning, and cached tokens for each request.
- Users and sessions: Approximate counts of distinct users and OpenCode sessions.
- Cost: Session cost is the average cost per OpenCode session. Token prices are list prices from the OpenCode model catalog.
- Retention: The share of a model's users in one week who use it again the next week.
- Citation: Cite OpenCode Data (opencode.ai/data) with the update time shown at the top of the page.