# Muse Spark vs Seed 2.1 Pro

> Side-by-side benchmark comparison for Muse Spark and Seed 2.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/muse-spark-vs-seed-2-1-pro
- Last updated: September 10, 2026

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

## Quick Verdict

Pick Muse Spark if you want the stronger benchmark profile. Seed 2.1 Pro only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Muse Spark leads overall 67.69 to 0.
- The biggest single benchmark swing is ZeroBench in Multimodal & Grounded, with scores of 33.0% and 18.0%.
- Muse Spark also has the larger context window at 262K.

## Model Snapshot

| Property | Muse Spark | Seed 2.1 Pro |
|----------|----------|----------|
| Creator | Meta | ByteDance |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 256K |
| Overall Score | 67.69 | null |
| Benchmarks Covered | 24 | 11 |
| Pricing (input/output) | N/A | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Muse Spark public-lane score: 56.1 (Supported · #34/152)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Muse Spark | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59% | Coming soon | Coming soon |
| τ²-bench results | 91.5% | Coming soon | Coming soon |
| DeepSearchQA | 74.8% | Coming soon | Coming soon |
| CyberGym | 43.5% | Coming soon | Coming soon |
| Claw-Eval | 63.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 71.0% | Coming soon |

### Coding

- Winner: Coming soon
- Muse Spark public-lane score: 59 (Supported · #25/151)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Muse Spark | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 77.4% | Coming soon | Coming soon |
| SWE-bench Pro | 52.4% | Coming soon | Coming soon |
| LiveCodeBench Pro | 80.0% | Coming soon | Coming soon |
| Vibe Code Bench | 19.67% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 71.0% | Coming soon |
| NL2Repo | Coming soon | 47% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Muse Spark public-lane score: 77.5 (#14/48)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Muse Spark | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 86.4% | 85.4% | Muse Spark |
| MMMU-Pro | 80.4% | 81.6% | Seed 2.1 Pro |
| ERQA | 64.7% | 72.0% | Seed 2.1 Pro |
| SimpleVQA | 71.3% | Coming soon | Coming soon |
| ScreenSpot Pro | 84.1% | Coming soon | Coming soon |
| ZeroBench | 33.0% | 18.0% | Muse Spark |
| MedXpertQA (MM) | 78.4% | Coming soon | Coming soon |
| MathVision | Coming soon | 92.6% | Coming soon |
| BabyVision | Coming soon | 73.7% | Coming soon |
| Video-MME | Coming soon | 89.2% | Coming soon |

### Reasoning

- Winner: Coming soon
- Muse Spark public-lane score: 45.1 (Unranked · 3 rankable rows)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Muse Spark | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 42.5% | Coming soon | Coming soon |

### Knowledge

- Winner: Coming soon
- Muse Spark public-lane score: 65.4 (Supported · #24/183)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Muse Spark | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 89.5% | Coming soon | Coming soon |
| HLE | 50.4% | Coming soon | Coming soon |
| HLE w/o tools | 42.8% | Coming soon | Coming soon |
| HealthBench Hard | 42.8% | Coming soon | Coming soon |
| MedXpertQA (Text) | 52.6% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 70.8% | Coming soon |

### Instruction Following

- Winner: Coming soon
- Muse Spark public-lane score: 93.2 (#8/123)
- Seed 2.1 Pro public-lane score: Coming soon

### Mathematics

- Winner: Coming soon
- Muse Spark public-lane score: 55.3 (Unranked · 2 rankable rows)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Muse Spark | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 39.000% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 14.600% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Muse Spark or Seed 2.1 Pro?

Muse Spark is ahead overall on BenchLM right now.

### How many benchmarks does Muse Spark cover on BenchLM?

Muse Spark currently has 24 sourced benchmark scores on BenchLM.

### How many benchmarks does Seed 2.1 Pro cover on BenchLM?

Seed 2.1 Pro currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Muse Spark vs Muse Spark 1.2](/compare/muse-spark-vs-muse-spark-1-2)
- [Seed 2.1 Pro vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-seed-2-1-pro)
- [Muse Spark vs Muse Spark 1.1](/compare/muse-spark-vs-muse-spark-1-1)
- [Seed 2.1 Pro vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-seed-2-1-pro)

## Explore More

- [Muse Spark profile](/models/muse-spark)
- [Seed 2.1 Pro profile](/models/seed-2-1-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)