The AI arena is free today

Open Superagent

Muse Spark Open vs Nemotron 3.5 Bolt (74B A9B 24GB)

Muse Spark Open leads the LLM Stats Score 44.9 to 29.9.

Meta · NVIDIA · Updated for 2026

Which is better?

Muse Spark Open leads the overall LLM Stats Score 44.9 to 29.9, ranking #43 overall.

In the 4 individual benchmarks reported for both models, Muse Spark Open wins 4; this is a narrower head-to-head signal than the composite indexes.

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

Choose Muse Spark Open

  • overall performance matters — it scores 44.9 and ranks #43 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 4 of 4 exact shared results

Choose Nemotron 3.5 Bolt (74B A9B 24GB)

  • you are already invested in the NVIDIA ecosystem

At a glance

The differences that matter most.

Muse Spark Open
Meta
Nemotron 3.5 Bolt (74B A9B 24GB)
NVIDIA
Core performance indexes
LLM Stats Score
44.9
#43
29.9
#142
Reasoning
45.2
#39
29.2
#143
Coding
33.0
#42
14.8
#151
Agents
30.6
#43
12.4
#124
Cost, coverage & limits
Benchmark wins
4 of 4
0 of 4
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

2 shared
Index
Muse Spark Open
Nemotron 3.5 Bolt (74B A9B 24GB)
Math
31.6#69
23.6#135
Tool use
23.3#44
5.6#168
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

17 reported for Muse Spark Open · 10 for Nemotron 3.5 Bolt (74B A9B 24GB)

4 shared

Muse Spark Open outperforms in 4 benchmarks (GPQA, MCP Atlas, SciCode, Terminal-Bench 2.1), while Nemotron 3.5 Bolt (74B A9B 24GB) is better at 0 benchmarks.

Muse Spark Open significantly outperforms across most benchmarks.

Mon Oct 19 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

742.0B diff

Muse Spark Open has 742.0B more parameters than Nemotron 3.5 Bolt (74B A9B 24GB), making it 1002.7% larger.

Meta
Muse Spark Open
816.0Bparameters
NVIDIA
Nemotron 3.5 Bolt (74B A9B 24GB)
74.0Bparameters
816.0B
Muse Spark Open
74.0B
Nemotron 3.5 Bolt (74B A9B 24GB)

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
NVIDIA
Nemotron 3.5 Bolt (74B A9B 24GB)
Input- tokens
Output- tokens
Mon Oct 19 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Muse Spark Open and Nemotron 3.5 Bolt (74B A9B 24GB) support multimodal inputs.

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

Muse Spark Open

Text
Images
Audio
Video

Nemotron 3.5 Bolt (74B A9B 24GB)

Text
Images
Audio
Video

License

Usage and distribution terms

Muse Spark Open is licensed under Muse Model License, while Nemotron 3.5 Bolt (74B A9B 24GB) uses OpenMDW License v1.1.

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

Muse Spark Open

Muse Model License

Open weights

Nemotron 3.5 Bolt (74B A9B 24GB)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Both models were released on 2026-10-15.

They likely represent similar generations of model development.

Muse Spark Open

Oct 15, 2026

4 days ago

Nemotron 3.5 Bolt (74B A9B 24GB)

Oct 15, 2026

4 days ago

Knowledge Cutoff

When training data ends

Nemotron 3.5 Bolt (74B A9B 24GB) has a documented knowledge cutoff of 2026-05-01, while Muse Spark Open's cutoff date is not specified.

We can confirm Nemotron 3.5 Bolt (74B A9B 24GB)'s training data extends to 2026-05-01, but cannot make a direct comparison without Muse Spark Open's cutoff date.

Muse Spark Open

—

Nemotron 3.5 Bolt (74B A9B 24GB)

May 2026

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Muse Spark Open and Nemotron 3.5 Bolt (74B A9B 24GB) side-by-side, then vote on the output you prefer.

Muse Spark Open
✓ Preferred
Nemotron 3.5 Bolt (74B A9B 24GB)
Open in Playground

FAQ

Common questions about Muse Spark Open vs Nemotron 3.5 Bolt (74B A9B 24GB).

Which is better, Muse Spark Open or Nemotron 3.5 Bolt (74B A9B 24GB)?

Muse Spark Open leads the LLM Stats Score 44.9 to 29.9. Muse Spark Open is made by Meta and Nemotron 3.5 Bolt (74B A9B 24GB) is made by NVIDIA. 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 Nemotron 3.5 Bolt (74B A9B 24GB) 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%. Nemotron 3.5 Bolt (74B A9B 24GB) scores PinchBench: 87.8%, GPQA: 86.4%, BrowseComp: 66.8%, AA-LCR: 64.1%, MCP Atlas: 52.2%.

What are the context window sizes for Muse Spark Open and Nemotron 3.5 Bolt (74B A9B 24GB)?

Muse Spark Open supports 1.0M tokens and Nemotron 3.5 Bolt (74B A9B 24GB) 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 Nemotron 3.5 Bolt (74B A9B 24GB)?

Key differences include LLM Stats Score (44.9 vs 29.9), licensing (Muse Model License vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Muse Spark Open and Nemotron 3.5 Bolt (74B A9B 24GB)?

Muse Spark Open is developed by Meta and Nemotron 3.5 Bolt (74B A9B 24GB) is developed by NVIDIA.

Related comparisons