# Nemotron 3.5 Lightning 30B A3B vs Beam 1.0 501B A23B - AI Model Comparison

- Page: https://opencode.ai/data/compare/nvidia/nemotron-3-5-lightning/reflection/beam-1-0-501b-a23b
- Updated: 2026-10-23T19:54:54.000Z

|  | Nemotron 3.5 Lightning 30B A3B | Beam 1.0 501B A23B |
| --- | --- | --- |
| Lab | NVIDIA | Reflection |
| Context window | 262K | 1M |
| Max output | 262K | 131K |
| Input modalities | text | text |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Open weights | Yes | Yes |
| Release date | 2026-08-11 | 2026-10-05 |
| Input price per 1M tokens | $0.05 | $0.30 |
| Output price per 1M tokens | $0.20 | $1.00 |
| Cached input price per 1M tokens | $0.01 | $0.04 |
| OpenCode tokens: past 2 months | 4.5T | 6.6T |
| Share of all tokens | 0.4% | 0.6% |
| Rank by tokens last week | #14 | #6 |
| Unique users | 242K | 127K |
| Weekly retention | - | - |

Model pages: [Nemotron 3.5 Lightning 30B A3B](https://opencode.ai/data/nvidia/nemotron-3-5-lightning.md), [Beam 1.0 501B A23B](https://opencode.ai/data/reflection/beam-1-0-501b-a23b.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.