# beam vs Step 5 Preview - AI Model Comparison

- Page: https://opencode.ai/data/compare/reflection/beam/stepfun/step-5-preview
- Updated: 2026-10-18T05:41:03.000Z

|  | beam | Step 5 Preview |
| --- | --- | --- |
| Lab | Reflection | StepFun |
| Context window | - | 1M |
| Max output | - | 1M |
| Input modalities | - | text, image, video |
| Reasoning | - | Yes |
| Tool calling | - | Yes |
| Open weights | - | No |
| Release date | - | 2026-09-16 |
| Input price per 1M tokens | - | $0.96 |
| Output price per 1M tokens | - | $2.74 |
| Cached input price per 1M tokens | - | $0.05 |
| OpenCode tokens: past 2 months | 2.2T | 7.1T |
| Share of all tokens | 0.2% | 0.7% |
| Rank by tokens last week | #8 | #6 |
| Unique users | 55K | 106K |
| Weekly retention | - | - |

Model pages: [beam](https://opencode.ai/data/reflection/beam.md), [Step 5 Preview](https://opencode.ai/data/stepfun/step-5-preview.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.