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MedGemma 4B IT vs Muse Spark Open

Muse Spark Open leads the LLM Stats Score 45.3 to -4.8.

Google · Meta · Updated for 2026

Which is better?

Muse Spark Open leads the overall LLM Stats Score 45.3 to -4.8, ranking #42 overall.

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

Choose MedGemma 4B IT

  • you are already invested in the Google ecosystem

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

At a glance

The differences that matter most.

MedGemma 4B IT
Google
Muse Spark Open
Meta
Core performance indexes
LLM Stats Score
-4.8
#374
45.3
#42
Reasoning
-5.2
#370
45.7
#35
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$1.25 / M
Output price
— / M
$4.25 / M
Context window
—
1,048,576

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
MedGemma 4B IT
Muse Spark Open
Vision
-6.8#224
31.3#33
Multimodal
-5.5#183
33.1#20
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

7 reported for MedGemma 4B IT · 17 for Muse Spark Open

No common benchmarks found

MedGemma 4B IT and Muse Spark Opendon'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

811.7B diff

Muse Spark Open has 811.7B more parameters than MedGemma 4B IT, making it 18876.7% larger.

Google
MedGemma 4B IT
4.3Bparameters
Meta
Muse Spark Open
816.0Bparameters
4.3B
MedGemma 4B IT
816.0B
Muse Spark Open

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).

Google
MedGemma 4B IT
Input- tokens
Output- tokens
Meta
Muse Spark Open
Input1,048,576 tokens
Output1,048,576 tokens
Fri Oct 23 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both MedGemma 4B IT and Muse Spark Open support multimodal inputs.

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

MedGemma 4B IT

Text
Images
Audio
Video

Muse Spark Open

Text
Images
Audio
Video

License

Usage and distribution terms

MedGemma 4B IT is licensed under Health AI Developer Foundations terms of use, while Muse Spark Open uses Muse Model License.

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

MedGemma 4B IT

Health AI Developer Foundations terms of use

Open weights

Muse Spark Open

Muse Model License

Open weights

Release Timeline

When each model was launched

MedGemma 4B IT was released on 2025-05-20, while Muse Spark Open was released on 2026-10-15.

Muse Spark Open is 17 months newer than MedGemma 4B IT.

MedGemma 4B IT

May 20, 2025

1.4 years ago

Muse Spark Open

Oct 15, 2026

1 weeks ago

1.4yr newer

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 MedGemma 4B IT and Muse Spark Open side-by-side, then vote on the output you prefer.

MedGemma 4B IT
✓ Preferred
Muse Spark Open
Open in Playground

FAQ

Common questions about MedGemma 4B IT vs Muse Spark Open.

Which is better, MedGemma 4B IT or Muse Spark Open?

Muse Spark Open leads the LLM Stats Score 45.3 to -4.8. MedGemma 4B IT is made by Google and Muse Spark Open is made by Meta. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does MedGemma 4B IT compare to Muse Spark Open in benchmarks?

MedGemma 4B IT scores MIMIC CXR: 88.9%, DermMCQA: 71.8%, PathMCQA: 69.8%, SlakeVQA: 62.3%, VQA-Rad: 49.9%. Muse Spark Open scores MCP Atlas: 89.2%, GPQA: 89.0%, OSWorld-Verified: 80.4%, BabyVision: 80.2%, Terminal-Bench 2.1: 76.4%.

What are the context window sizes for MedGemma 4B IT and Muse Spark Open?

MedGemma 4B IT supports an unknown number of tokens and Muse Spark Open supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between MedGemma 4B IT and Muse Spark Open?

Key differences include LLM Stats Score (-4.8 vs 45.3), licensing (Health AI Developer Foundations terms of use vs Muse Model License). See the full comparison above for benchmark-by-benchmark results.

Who makes MedGemma 4B IT and Muse Spark Open?

MedGemma 4B IT is developed by Google and Muse Spark Open is developed by Meta.

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