Model Comparison

Seed 2.1 Pro vs Muse SparkWhich is better in 2026?

Seed 2.1 Pro has a slight edge in benchmark performance.

Verdict: Seed 2.1 Pro vs Muse Spark — which is better?

Seed 2.1 Pro (by ByteDance) and Muse Spark (by Meta) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Seed 2.1 Pro outperforms in 5 benchmarks (ERQA, MMMU-Pro, SimpleVQA, SWE-Bench Pro, ZEROBench), while Muse Spark is better at 3 benchmarks (FrontierScience Research, Humanity's Last Exam, IPhO 2025). Seed 2.1 Pro has a slight edge in benchmark performance.

Choose Seed 2.1 Pro if…

  • you want the strongest raw capability — it leads on 5 of 9 shared benchmarks
  • you want the most recent training data — it shipped Jun 2026

Choose Muse Spark if…

  • you are already invested in the Meta ecosystem

Performance Benchmarks

Comparative analysis across standard metrics

9 benchmarks

Seed 2.1 Pro outperforms in 5 benchmarks (ERQA, MMMU-Pro, SimpleVQA, SWE-Bench Pro, ZEROBench), while Muse Spark is better at 3 benchmarks (FrontierScience Research, Humanity's Last Exam, IPhO 2025).

Seed 2.1 Pro has a slight edge in benchmark performance.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Input Capabilities

Supported data types and modalities

Both Seed 2.1 Pro and Muse Spark support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Seed 2.1 Pro

Text
Images
Audio
Video

Muse Spark

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Seed 2.1 Pro

Proprietary

Closed source

Muse Spark

Proprietary

Closed source

Release Timeline

When each model was launched

Seed 2.1 Pro was released on 2026-06-24, while Muse Spark was released on 2026-04-08.

Seed 2.1 Pro is 3 months newer than Muse Spark.

Seed 2.1 Pro

Jun 24, 2026

3 weeks ago

2mo newer
Muse Spark

Apr 8, 2026

3 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

ByteDance
Higher ERQA score (72.0% vs 64.7%)
Higher MMMU-Pro score (82.7% vs 80.4%)
Higher SimpleVQA score (74.5% vs 71.3%)
Higher SWE-Bench Pro score (57.5% vs 52.4%)
Higher ZEROBench score (56.3% vs 33.0%)
Meta
Higher FrontierScience Research score (38.3% vs 28.3%)
Higher Humanity's Last Exam score (58.4% vs 55.7%)
Higher IPhO 2025 score (82.6% vs 79.3%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Seed 2.1 Pro and Muse Spark side-by-side, then vote on the output you prefer.

Seed 2.1 Pro
✓ Preferred
Muse Spark
Open in Playground
AI Model Comparison Table
Feature
ByteDance
Seed 2.1 Pro
Meta
Muse Spark

FAQ

Common questions about Seed 2.1 Pro vs Muse Spark.

Which is better, Seed 2.1 Pro or Muse Spark?

Seed 2.1 Pro has a slight edge in benchmark performance. Seed 2.1 Pro is made by ByteDance and Muse Spark is made by Meta. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Seed 2.1 Pro compare to Muse Spark in benchmarks?

Seed 2.1 Pro scores CharXiv-D: 95.5%, MathVision: 94.5%, MathVista: 90.7%, MathVerse: 89.7%, Video-MME: 89.2%. Muse Spark scores Tau2 Telecom: 91.5%, GPQA: 89.5%, CharXiv-R: 86.4%, ScreenSpot Pro: 84.1%, IPhO 2025: 82.6%.

Who makes Seed 2.1 Pro and Muse Spark?

Seed 2.1 Pro is developed by ByteDance and Muse Spark is developed by Meta.

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