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Muse Spark Open vs Step3-VL-10B

Muse Spark Open leads the LLM Stats Score 45.3 to 25.2.

Meta · StepFun · Updated for 2026

Which is better?

Muse Spark Open leads the overall LLM Stats Score 45.3 to 25.2, ranking #42 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Muse Spark Open

  • overall performance matters — it scores 45.3 and ranks #42 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Oct 2026

Choose Step3-VL-10B

  • you are already invested in the StepFun ecosystem

At a glance

The differences that matter most.

Muse Spark Open
Meta
Step3-VL-10B
StepFun
Core performance indexes
LLM Stats Score
45.3
#42
25.2
#182
Reasoning
45.7
#35
25.2
#176
Cost, coverage & limits
Benchmark wins
—
—
Input price
$1.25 / M
— / M
Output price
$4.25 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Muse Spark Open
Step3-VL-10B
Math
33.3#58
23.4#139
Vision
31.3#33
16.3#104
Multimodal
33.1#20
19.9#85
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

17 reported for Muse Spark Open · 6 for Step3-VL-10B

No common benchmarks found

Muse Spark Open and Step3-VL-10Bdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

806.0B diff

Muse Spark Open has 806.0B more parameters than Step3-VL-10B, making it 8060.0% larger.

Meta
Muse Spark Open
816.0Bparameters
StepFun
Step3-VL-10B
10.0Bparameters
816.0B
Muse Spark Open
10.0B
Step3-VL-10B

Context Window

Maximum input and output token capacity

Only Muse Spark Open specifies input context (1,048,576 tokens). Only Muse Spark Open specifies output context (1,048,576 tokens).

Meta
Muse Spark Open
Input1,048,576 tokens
Output1,048,576 tokens
StepFun
Step3-VL-10B
Input- tokens
Output- tokens
Thu Oct 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Muse Spark Open and Step3-VL-10B support multimodal inputs.

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

Muse Spark Open

Text
Images
Audio
Video

Step3-VL-10B

Text
Images
Audio
Video

License

Usage and distribution terms

Muse Spark Open is licensed under Muse Model License, while Step3-VL-10B uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

Muse Spark Open

Muse Model License

Open weights

Step3-VL-10B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Muse Spark Open was released on 2026-10-15, while Step3-VL-10B was released on 2026-01-15.

Muse Spark Open is 9 months newer than Step3-VL-10B.

Muse Spark Open

Oct 15, 2026

5 days ago

9mo newer
Step3-VL-10B

Jan 15, 2026

9 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?

Judge for yourself.

Run your own prompts against Muse Spark Open and Step3-VL-10B side-by-side, then vote on the output you prefer.

Muse Spark Open
✓ Preferred
Step3-VL-10B
Open in Playground

FAQ

Common questions about Muse Spark Open vs Step3-VL-10B.

Which is better, Muse Spark Open or Step3-VL-10B?

Muse Spark Open leads the LLM Stats Score 45.3 to 25.2. Muse Spark Open is made by Meta and Step3-VL-10B is made by StepFun. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Muse Spark Open compare to Step3-VL-10B in benchmarks?

Muse Spark Open scores MCP Atlas: 89.2%, GPQA: 89.0%, OSWorld-Verified: 80.4%, BabyVision: 80.2%, Terminal-Bench 2.1: 76.4%. Step3-VL-10B scores MMBench: 91.8%, AIME 2025: 87.7%, MathVista: 84.0%, MMMU: 78.1%, MathVision: 70.8%.

What are the context window sizes for Muse Spark Open and Step3-VL-10B?

Muse Spark Open supports 1.0M tokens and Step3-VL-10B supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Muse Spark Open and Step3-VL-10B?

Key differences include LLM Stats Score (45.3 vs 25.2), licensing (Muse Model License vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Muse Spark Open and Step3-VL-10B?

Muse Spark Open is developed by Meta and Step3-VL-10B is developed by StepFun.

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