# Beam vs Step 5 Preview

> Side-by-side benchmark comparison for Beam and Step 5 Preview across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/reflection-beam-vs-step-5-preview
- Last updated: October 5, 2026

- Shared sourced benchmarks: 7
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Step 5 Preview leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Step 5 Preview has the higher overall point estimate 70.23 to 0. Conditional score ranges do not establish rank confidence.
- The biggest single benchmark swing is DeepSWE in Coding, with scores of 44.4% and 67.7%.
- Beam is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Step 5 Preview also has the larger context window at 1M.

## Model Snapshot

| Property | Beam | Step 5 Preview |
|----------|----------|----------|
| Creator | Reflection AI | StepFun |
| Type | Pending | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | null | 1M |
| Overall Score | null | 70.23 |
| Benchmarks Covered | 16 | 22 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $1.00 / $2.70 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Beam public-lane score: Coming soon
- Step 5 Preview public-lane score: 63.9 (Estimated · #17/119)

| Benchmark | Beam | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 80.1% | 85.0% | Step 5 Preview |
| MCP Atlas | 78.7% | 85.6% | Step 5 Preview |
| BrowseComp | 77.4% | 88.7% | Step 5 Preview |
| DeepSearchQA | 80.1% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 33.30% | Coming soon |
| CyberGym | Coming soon | 84.7% | Coming soon |
| AutomationBench | Coming soon | 44.0% | Coming soon |
| Toolathlon-Verified | Coming soon | 74.1% | Coming soon |
| JobBench | Coming soon | 59.0% | Coming soon |
| APEX-Agents | Coming soon | 37.8% | Coming soon |
| DRACO | Coming soon | 83.3% | Coming soon |
| Agents' Last Exam | Coming soon | 29.5% | Coming soon |

### Coding

- Winner: Not comparable
- Beam public-lane score: Coming soon
- Step 5 Preview public-lane score: 61.7 (Estimated · #17/144)

| Benchmark | Beam | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 44.4% | 67.7% | Step 5 Preview |
| SWE-bench Pro | 65.5% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 80.1% | 85.0% | Step 5 Preview |
| SWE-Atlas Codebase QnA | 34.6% | Coming soon | Coming soon |
| SWE Multilingual | 78% | Coming soon | Coming soon |
| SWE-bench Verified | 80.9% | Coming soon | Coming soon |
| SciCode | 49.7% | 58.9% | Step 5 Preview |
| ProgramBench | Coming soon | 80.5% | Coming soon |
| sweMarathon | Coming soon | 72.7% | Coming soon |
| MLS-Bench Lite | Coming soon | 40.5% | Coming soon |

### Reasoning

- Winner: Not comparable
- Beam public-lane score: Coming soon
- Step 5 Preview public-lane score: 79.6 (Unranked · 2 rankable rows)

| Benchmark | Beam | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 65.5% | Coming soon | Coming soon |
| CritPt | Coming soon | 20.9% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Beam public-lane score: Coming soon
- Step 5 Preview public-lane score: 61.2 (#28/49)

| Benchmark | Beam | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | Coming soon | 60.3% | Coming soon |
| MMMU-Pro | Coming soon | 76% | Coming soon |

### Knowledge

- Winner: Not comparable
- Beam public-lane score: Coming soon
- Step 5 Preview public-lane score: 67.4 (Supported · #19/171)

| Benchmark | Beam | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 90.5% | 93.5% | Step 5 Preview |
| HLE w/o tools | 36.2% | Coming soon | Coming soon |
| HLE | Coming soon | 46.5% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Beam public-lane score: Coming soon
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Beam | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 79.7% | Coming soon | Coming soon |

### Mathematics

- Winner: Not comparable
- Beam public-lane score: Coming soon
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Beam | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.8% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Beam or Step 5 Preview?

Step 5 Preview has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### How many benchmarks does Beam cover on BenchLM?

Beam currently has 16 sourced benchmark scores on BenchLM.

### How many benchmarks does Step 5 Preview cover on BenchLM?

Step 5 Preview currently has 22 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Beam vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-reflection-beam)
- [Step 5 Preview vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-step-5-preview)
- [Beam vs GPT-6 Astra](/compare/gpt-6-astra-vs-reflection-beam)
- [Step 5 Preview vs GPT-6 Astra](/compare/gpt-6-astra-vs-step-5-preview)

## Explore More

- [Beam profile](/models/reflection-beam)
- [Step 5 Preview profile](/models/step-5-preview)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)