# Muse Glimmer 30B vs Step 5 Preview

> Side-by-side benchmark comparison for Muse Glimmer 30B and Step 5 Preview across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/muse-glimmer-30b-vs-step-5-preview
- Last updated: September 21, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Step 5 Preview if you want the stronger benchmark profile. Muse Glimmer 30B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Step 5 Preview leads overall 72 to 44.84.
- The clearest category separation is in multimodal & grounded, where the averages are 46.3 for Muse Glimmer 30B and 61.2 for Step 5 Preview.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Coding, with scores of 51.7% and 85.0%.
- Muse Glimmer 30B 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 | Muse Glimmer 30B | Step 5 Preview |
|----------|----------|----------|
| Creator | Meta | StepFun |
| Type | Open Weight | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 131K | 1M |
| Overall Score | 44.84 | null |
| Benchmarks Covered | 14 | 22 |
| Pricing (input/output) | $0.00 / $0.00 | $1.00 / $2.70 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Muse Glimmer 30B public-lane score: 43.4 (Estimated · #104/154)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Muse Glimmer 30B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| MCP Atlas | 75.5% | 85.6% | Step 5 Preview |
| DeepSearchQA | 74.6% | Coming soon | Coming soon |
| skillsBench | 44.3% | Coming soon | Coming soon |
| OSWorld-Verified | 65.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 85.0% | 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 |
| BrowseComp | Coming soon | 88.7% | Coming soon |
| Agents' Last Exam | Coming soon | 29.5% | Coming soon |

### Coding

- Winner: Coming soon
- Muse Glimmer 30B public-lane score: 48.6 (Estimated · #74/156)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Muse Glimmer 30B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 51.2% | Coming soon | Coming soon |
| SWE-bench Verified | 76% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 51.7% | 85.0% | Step 5 Preview |
| SciCode | 43.6% | 58.9% | Step 5 Preview |
| DeepSWE | Coming soon | 67.7% | Coming soon |
| 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: Coming soon
- Muse Glimmer 30B public-lane score: 78.3 (Unranked · 2 rankable rows)
- Step 5 Preview public-lane score: 78.5 (Unranked · 2 rankable rows)

| Benchmark | Muse Glimmer 30B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 20.9% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Muse Glimmer 30B public-lane score: 46.3 (#41/49)
- Step 5 Preview public-lane score: 61.2 (#28/49)

| Benchmark | Muse Glimmer 30B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 78.8% | Coming soon | Coming soon |
| ScreenSpot Pro | 75.4% | Coming soon | Coming soon |
| OmniDocBench 1.5 | 75.8% | Coming soon | Coming soon |
| MMMU-Pro | 74% | 76% | Step 5 Preview |
| OfficeQA Pro | Coming soon | 60.3% | Coming soon |

### Knowledge

- Winner: Coming soon
- Muse Glimmer 30B public-lane score: 47.4 (Estimated · #100/186)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Muse Glimmer 30B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | Coming soon | 93.5% | Coming soon |
| HLE | Coming soon | 46.5% | Coming soon |

### Instruction Following

- Winner: Coming soon
- Muse Glimmer 30B public-lane score: 77.7 (#55/124)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Muse Glimmer 30B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 77% | Coming soon | Coming soon |

### Mathematics

- Winner: Coming soon
- Muse Glimmer 30B public-lane score: 75.4 (Unranked · 1 rankable row)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Muse Glimmer 30B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 94.7% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Muse Glimmer 30B or Step 5 Preview?

Step 5 Preview is ahead overall on BenchLM right now.

### Where is the biggest gap between Muse Glimmer 30B and Step 5 Preview?

The widest category gap is in multimodal & grounded, where the averages are 46.3 for Muse Glimmer 30B and 61.2 for Step 5 Preview.

### How many benchmarks does Muse Glimmer 30B cover on BenchLM?

Muse Glimmer 30B currently has 14 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

- [Muse Glimmer 30B vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-muse-glimmer-30b)
- [Step 5 Preview vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-step-5-preview)
- [Muse Glimmer 30B vs GPT-6 Astra](/compare/gpt-6-astra-vs-muse-glimmer-30b)
- [Step 5 Preview vs GPT-6 Astra](/compare/gpt-6-astra-vs-step-5-preview)

## Explore More

- [Muse Glimmer 30B profile](/models/muse-glimmer-30b)
- [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)