# GPT-5.2 vs Muse Glimmer 30B

> Side-by-side benchmark comparison for GPT-5.2 and Muse Glimmer 30B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-2-vs-muse-glimmer-30b
- Last updated: September 24, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick GPT-5.2 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-5.2 leads overall 61.37 to 41.73.
- The clearest category separation is in multimodal & grounded, where the averages are 66.3 for GPT-5.2 and 46.3 for Muse Glimmer 30B.
- The biggest single benchmark swing is OSWorld-Verified in Agentic, with scores of 47.3% and 65.9%.
- Muse Glimmer 30B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.2 also has the larger context window at 400K.

## Model Snapshot

| Property | GPT-5.2 | Muse Glimmer 30B |
|----------|----------|----------|
| Creator | OpenAI | Meta |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 400K | 131K |
| Overall Score | 61.37 | 41.73 |
| Benchmarks Covered | 15 | 14 |
| Pricing (input/output) | $1.75 / $14.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GPT-5.2 public-lane score: 42.6 (Supported · #42/105)
- Muse Glimmer 30B public-lane score: 27.6 (Estimated · #72/105)

| Benchmark | GPT-5.2 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| BrowseComp | 65.8% | Coming soon | Coming soon |
| OSWorld-Verified | 47.3% | 65.9% | Muse Glimmer 30B |
| Gert Labs | 46.54% | Coming soon | Coming soon |
| JobBench | 34.3% | Coming soon | Coming soon |
| MCP Atlas | Coming soon | 75.5% | Coming soon |
| DeepSearchQA | Coming soon | 74.6% | Coming soon |
| skillsBench | Coming soon | 44.3% | Coming soon |

### Coding

- Winner: Directional only
- GPT-5.2 public-lane score: 41 (Supported · #54/135)
- Muse Glimmer 30B public-lane score: 36.3 (Estimated · #69/135)

| Benchmark | GPT-5.2 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80% | 76% | GPT-5.2 |
| SWE-bench Pro | 55.6% | 51.2% | GPT-5.2 |
| Vibe Code Bench | 53.50% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 51.7% | Coming soon |
| SciCode | Coming soon | 43.6% | Coming soon |

### Reasoning

- Winner: Not comparable
- GPT-5.2 public-lane score: 60.6 (Unranked · 3 rankable rows)
- Muse Glimmer 30B public-lane score: 79.3 (Unranked · 2 rankable rows)

| Benchmark | GPT-5.2 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 52.9% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: GPT-5.2
- GPT-5.2 public-lane score: 66.3 (#23/50)
- Muse Glimmer 30B public-lane score: 46.3 (#42/50)

| Benchmark | GPT-5.2 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 79.5% | 74% | GPT-5.2 |
| MathVision | 83.0% | Coming soon | Coming soon |
| CharXiv | 82.1% | 78.8% | GPT-5.2 |
| V* | 75.9% | Coming soon | Coming soon |
| ScreenSpot Pro | Coming soon | 75.4% | Coming soon |
| OmniDocBench 1.5 | Coming soon | 75.8% | Coming soon |

### Knowledge

- Winner: Directional only
- GPT-5.2 public-lane score: 57.9 (Supported · #38/158)
- Muse Glimmer 30B public-lane score: 43.9 (Estimated · #75/158)

| Benchmark | GPT-5.2 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.4% | Coming soon | Coming soon |

### Instruction Following

- Winner: Directional only
- GPT-5.2 public-lane score: 91.2 (#15/124)
- Muse Glimmer 30B public-lane score: 77.7 (#55/124)

| Benchmark | GPT-5.2 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 77% | Coming soon |

### Mathematics

- Winner: Not comparable
- GPT-5.2 public-lane score: 57.4 (Unranked · 2 rankable rows)
- Muse Glimmer 30B public-lane score: 75.4 (Unranked · 1 rankable row)

| Benchmark | GPT-5.2 | Muse Glimmer 30B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 40.700% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 18.800% | Coming soon | Coming soon |
| AIME26 | Coming soon | 94.7% | Coming soon |

## FAQ

### Which is better overall, GPT-5.2 or Muse Glimmer 30B?

GPT-5.2 is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-5.2 and Muse Glimmer 30B?

The widest category gap is in multimodal & grounded, where the averages are 66.3 for GPT-5.2 and 46.3 for Muse Glimmer 30B.

### How many benchmarks does GPT-5.2 cover on BenchLM?

GPT-5.2 currently has 15 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-5.2 vs GPT-5.2 Pro](/compare/gpt-5-2-vs-gpt-5-2-pro)
- [Muse Glimmer 30B vs GPT-5.2 Pro](/compare/gpt-5-2-pro-vs-muse-glimmer-30b)
- [GPT-5.2 vs GPT-5.2 Instant](/compare/gpt-5-2-vs-gpt-5-2-instant)
- [Muse Glimmer 30B vs GPT-5.2 Instant](/compare/gpt-5-2-instant-vs-muse-glimmer-30b)

## Explore More

- [GPT-5.2 profile](/models/gpt-5-2)
- [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)