# Gemini 3.1 Pro vs Muse Spark Open

> Side-by-side benchmark comparison for Gemini 3.1 Pro and Muse Spark Open across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-pro-vs-muse-spark-open
- Last updated: October 15, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemini 3.1 Pro and Muse Spark Open share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Muse Spark Open has the lower published output-token price.

## Model Snapshot

| Property | Gemini 3.1 Pro | Muse Spark Open |
|----------|----------|----------|
| Creator | Google | Meta |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Independent public score (not head-to-head) | 64.69 | 62.66 |
| Benchmarks Covered | 30 | 7 |
| Pricing (input/output) | $2.00 / $12.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 38.5 (Supported · #71/127)
- Muse Spark Open public-lane score: 60.2 (Estimated · #27/127)

| Benchmark | Gemini 3.1 Pro | Muse Spark Open | Winner |
|-----------|-----------|-----------|--------|
| Claw-Eval | 57.8% | Coming soon | Coming soon |
| DeepSearchQA | 69.7% | Coming soon | Coming soon |
| τ²-bench results | 95.6% | Coming soon | Coming soon |
| Gert Labs | 56.87% | Coming soon | Coming soon |
| ResearchClawBench | 13.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 70.8% | Coming soon | Coming soon |
| MazeBench | 1% | Coming soon | Coming soon |
| JobBench | Coming soon | 61.8% | Coming soon |
| MCP Atlas | Coming soon | 89.2% | Coming soon |
| HLE w/ tools | Coming soon | 61.0% | Coming soon |
| Toolathlon-Verified | Coming soon | 72.8% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 39.2 (Supported · #67/150)
- Muse Spark Open public-lane score: 56.1 (Supported · #29/150)

| Benchmark | Gemini 3.1 Pro | Muse Spark Open | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 82.9% | Coming soon | Coming soon |
| React Native Evals | 78.9% | Coming soon | Coming soon |
| Vibe Code Bench | 32.03% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 88.5% | Coming soon | Coming soon |
| SWE-bench (Vals) | 78.8% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 22.0% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 58.2 (Unranked · 2 rankable rows)
- Muse Spark Open public-lane score: 79.6 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.1 Pro | Muse Spark Open | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 77.1% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 80.1 (#17/54)
- Muse Spark Open public-lane score: 83.6 (Unranked · 4 rankable rows)

| Benchmark | Gemini 3.1 Pro | Muse Spark Open | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 83.9% | Coming soon | Coming soon |
| CharXiv | 80.2% | Coming soon | Coming soon |
| ERQA | 69.4% | Coming soon | Coming soon |
| SimpleVQA | 72.4% | 73.6% | Muse Spark Open |
| ScreenSpot Pro | 84.4% | Coming soon | Coming soon |
| ZeroBench | 29.0% | 50.0% | Muse Spark Open |
| MedXpertQA (MM) | 81.3% | Coming soon | Coming soon |
| BabyVision | Coming soon | 80.2% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 67.4 (Supported · #26/184)
- Muse Spark Open public-lane score: 64.6 (Supported · #38/184)

| Benchmark | Gemini 3.1 Pro | Muse Spark Open | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 94.3% | Coming soon | Coming soon |
| HLE w/o tools | 45.4% | Coming soon | Coming soon |
| HealthBench Hard | 20.6% | Coming soon | Coming soon |
| MedXpertQA (Text) | 71.5% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 95.5% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 91.0% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 3.1 Pro public-lane score: 65 (Unranked · 2 rankable rows)
- Muse Spark Open public-lane score: Coming soon

| Benchmark | Gemini 3.1 Pro | Muse Spark Open | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 59.649% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 26.829% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemini 3.1 Pro and Muse Spark Open?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Gemini 3.1 Pro vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-1-pro)
- [Muse Spark Open vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-muse-spark-open)
- [Gemini 3.1 Pro vs GPT-6.1 Sol](/compare/gemini-3-1-pro-vs-gpt-6-1-sol)
- [Muse Spark Open vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-muse-spark-open)

## Explore More

- [Gemini 3.1 Pro profile](/models/gemini-3-1-pro)
- [Muse Spark Open profile](/models/muse-spark-open)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)