# Muse Spark 1.2 vs Seed 2.1 Turbo

> Side-by-side benchmark comparison for Muse Spark 1.2 and Seed 2.1 Turbo across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Muse Spark 1.2 and Seed 2.1 Turbo 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.
- Seed 2.1 Turbo has the lower published output-token price.
- Muse Spark 1.2 has the larger published context window at 1M.

## Model Snapshot

| Property | Muse Spark 1.2 | Seed 2.1 Turbo |
|----------|----------|----------|
| Creator | Meta | ByteDance |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Independent public score (not head-to-head) | 70.51 | null |
| Benchmarks Covered | 8 | 11 |
| Pricing (input/output) | $1.25 / $4.25 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: 61.1 (Supported · #16/152)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 82.9% | 67.6% | Muse Spark 1.2 |
| Terminal-Bench 2.1 (Vals) | 69.7% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: 60 (Supported · #21/151)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 82.9% | 67.6% | Muse Spark 1.2 |
| DeepSWE | 59.3% | Coming soon | Coming soon |
| VulcanBench v3 | 87.0% | Coming soon | Coming soon |
| FrontierSWE v2 | 12.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 86.6% | Coming soon | Coming soon |
| NL2Repo | Coming soon | 43.7% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: Coming soon
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| MathVision | Coming soon | 90.1% | Coming soon |
| MMMU-Pro | Coming soon | 80.1% | Coming soon |
| ZeroBench | Coming soon | 11.0% | Coming soon |
| BabyVision | Coming soon | 62.9% | Coming soon |
| CharXiv | Coming soon | 82.5% | Coming soon |
| ERQA | Coming soon | 71.3% | Coming soon |
| Video-MME | Coming soon | 89.0% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: 75.3 (Unranked · 2 rankable rows)
- Seed 2.1 Turbo public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: 70.8 (Estimated · #10/183)
- Seed 2.1 Turbo public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Seed 2.1 Turbo | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Pro (Vals) | 88.3% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 67.4% | Coming soon |

## FAQ

### Is there enough evidence to pick between Muse Spark 1.2 and Seed 2.1 Turbo?

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

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

## Explore More

- [Muse Spark 1.2 profile](/models/muse-spark-1-2)
- [Seed 2.1 Turbo profile](/models/seed-2-1-turbo)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)