# GPT-5.4 vs Muse Glimmer 30B

> Side-by-side benchmark comparison for GPT-5.4 and Muse Glimmer 30B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-vs-muse-glimmer-30b
- Last updated: September 24, 2026

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

## Quick Verdict

Pick GPT-5.4 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

- GPT-5.4 leads overall 68.51 to 41.73.
- The clearest category separation is in multimodal & grounded, where the averages are 69.3 for GPT-5.4 and 46.3 for Muse Glimmer 30B.
- The biggest single benchmark swing is ScreenSpot Pro in Multimodal & Grounded, with scores of 85.4% and 75.4%.
- Muse Glimmer 30B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.4 also has the larger context window at 1.05M.

## Model Snapshot

| Property | GPT-5.4 | Muse Glimmer 30B |
|----------|----------|----------|
| Creator | OpenAI | Meta |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 131K |
| Overall Score | 68.51 | 41.73 |
| Benchmarks Covered | 38 | 14 |
| Pricing (input/output) | $2.50 / $15.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GPT-5.4 public-lane score: 49.4 (Supported · #36/105)
- Muse Glimmer 30B public-lane score: 27.6 (Estimated · #72/105)

| Benchmark | GPT-5.4 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 75.1% | Coming soon | Coming soon |
| CyberGym | 79.0% | Coming soon | Coming soon |
| BrowseComp | 82.7% | Coming soon | Coming soon |
| OSWorld-Verified | 75% | 65.9% | GPT-5.4 |
| MCP Atlas | 70.6% | 75.5% | Muse Glimmer 30B |
| Toolathlon | 54.6% | Coming soon | Coming soon |
| τ²-bench results | 98.9% | Coming soon | Coming soon |
| Claw-Eval | 60.3% | Coming soon | Coming soon |
| DeepSearchQA | 73.6% | 74.6% | Muse Glimmer 30B |
| Gert Labs | 64.89% | Coming soon | Coming soon |
| ResearchClawBench | 15.3% | Coming soon | Coming soon |
| JobBench | 38.9% | Coming soon | Coming soon |
| ExploitGym | 6.0% | Coming soon | Coming soon |
| ApprenticeBench | 11% | Coming soon | Coming soon |
| skillsBench | Coming soon | 44.3% | Coming soon |

### Coding

- Winner: Directional only
- GPT-5.4 public-lane score: 50.7 (Supported · #38/135)
- Muse Glimmer 30B public-lane score: 36.3 (Estimated · #69/135)

| Benchmark | GPT-5.4 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 87.5% | Coming soon | Coming soon |
| SWE-bench Pro | 57.7% | 51.2% | GPT-5.4 |
| React Native Evals | 85.3% | Coming soon | Coming soon |
| Vibe Code Bench | 67.42% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 76% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 51.7% | Coming soon |
| SciCode | Coming soon | 43.6% | Coming soon |

### Reasoning

- Winner: Not comparable
- GPT-5.4 public-lane score: 60.5 (#14/19)
- Muse Glimmer 30B public-lane score: 79.3 (Unranked · 2 rankable rows)

| Benchmark | GPT-5.4 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 74.0% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.2% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- GPT-5.4 public-lane score: 69.3 (#21/50)
- Muse Glimmer 30B public-lane score: 46.3 (#42/50)

| Benchmark | GPT-5.4 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 81.2% | 74% | GPT-5.4 |
| OfficeQA Pro | 53.2% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 82.1% | Coming soon | Coming soon |
| CharXiv | 82.8% | 78.8% | GPT-5.4 |
| ERQA | 65.4% | Coming soon | Coming soon |
| SimpleVQA | 61.1% | Coming soon | Coming soon |
| ScreenSpot Pro | 85.4% | 75.4% | GPT-5.4 |
| ZeroBench | 41.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 77.1% | Coming soon | Coming soon |
| OmniDocBench 1.5 | Coming soon | 75.8% | Coming soon |

### Knowledge

- Winner: Directional only
- GPT-5.4 public-lane score: 66.8 (Supported · #16/158)
- Muse Glimmer 30B public-lane score: 43.9 (Estimated · #75/158)

| Benchmark | GPT-5.4 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | Coming soon | Coming soon |
| HLE | 52.1% | Coming soon | Coming soon |
| HLE w/o tools | 39.8% | Coming soon | Coming soon |
| GPQA-D | 92.8% | Coming soon | Coming soon |
| HealthBench Hard | 40.1% | Coming soon | Coming soon |
| MedXpertQA (Text) | 59.6% | Coming soon | Coming soon |
| HealthBench Professional | 48.1% | Coming soon | Coming soon |

### Instruction Following

- Winner: Directional only
- GPT-5.4 public-lane score: 89.2 (#19/124)
- Muse Glimmer 30B public-lane score: 77.7 (#55/124)

| Benchmark | GPT-5.4 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 77% | Coming soon |

### Mathematics

- Winner: Not comparable
- GPT-5.4 public-lane score: 64.4 (Unranked · 2 rankable rows)
- Muse Glimmer 30B public-lane score: 75.4 (Unranked · 1 rankable row)

| Benchmark | GPT-5.4 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 47.600% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 27.100% | Coming soon | Coming soon |
| AIME26 | Coming soon | 94.7% | Coming soon |

## FAQ

### Which is better overall, GPT-5.4 or Muse Glimmer 30B?

GPT-5.4 is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-5.4 and Muse Glimmer 30B?

The widest category gap is in multimodal & grounded, where the averages are 69.3 for GPT-5.4 and 46.3 for Muse Glimmer 30B.

### How many benchmarks does GPT-5.4 cover on BenchLM?

GPT-5.4 currently has 38 sourced benchmark scores on BenchLM.

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

Muse Glimmer 30B currently has 14 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-5.4 vs GPT-5.4 Pro](/compare/gpt-5-4-vs-gpt-5-4-pro)
- [Muse Glimmer 30B vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-muse-glimmer-30b)
- [GPT-5.4 vs GPT-5.4 mini](/compare/gpt-5-4-vs-gpt-5-4-mini)
- [Muse Glimmer 30B vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-muse-glimmer-30b)

## Explore More

- [GPT-5.4 profile](/models/gpt-5-4)
- [Muse Glimmer 30B profile](/models/muse-glimmer-30b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)