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MedGemma 4B IT vs Muse Spark 1.3

Muse Spark 1.3 leads the LLM Stats Score 55.1 to -4.5.

Google · Meta · Updated for 2026

Which is better?

Muse Spark 1.3 leads the overall LLM Stats Score 55.1 to -4.5, ranking #4 overall.

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

Choose MedGemma 4B IT

  • you need open weights you can self-host or fine-tune

Choose Muse Spark 1.3

  • overall performance matters — it scores 55.1 and ranks #4 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026

At a glance

The differences that matter most.

MedGemma 4B IT
Google
Muse Spark 1.3
Meta
Core performance indexes
LLM Stats Score
-4.5
#347
55.1
#4
Reasoning
-5.0
#344
52.6
#7
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.10 / M
Output price
— / M
$0.20 / M
Context window
—
1,048,576

Individual benchmarks

7 reported for MedGemma 4B IT · 11 for Muse Spark 1.3

No common benchmarks found

MedGemma 4B IT and Muse Spark 1.3don'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

Context Window

Maximum input and output token capacity

Only Muse Spark 1.3 specifies input context (1,048,576 tokens). Only Muse Spark 1.3 specifies output context (943,718 tokens).

Google
MedGemma 4B IT
Input- tokens
Output- tokens
Meta
Muse Spark 1.3
Input1,048,576 tokens
Output943,718 tokens
Tue Sep 08 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both MedGemma 4B IT and Muse Spark 1.3 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 1.3

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 1.3 uses a proprietary 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 1.3

Proprietary

Closed source

Release Timeline

When each model was launched

MedGemma 4B IT was released on 2025-05-20, while Muse Spark 1.3 was released on 2026-09-02.

Muse Spark 1.3 is 16 months newer than MedGemma 4B IT.

MedGemma 4B IT

May 20, 2025

1.3 years ago

Muse Spark 1.3

Sep 2, 2026

6 days ago

1.3yr 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?Start an Issue discussion→

Judge for yourself.

Run your own prompts against MedGemma 4B IT and Muse Spark 1.3 side-by-side, then vote on the output you prefer.

MedGemma 4B IT
✓ Preferred
Muse Spark 1.3
Open in Playground

FAQ

Common questions about MedGemma 4B IT vs Muse Spark 1.3.

Which is better, MedGemma 4B IT or Muse Spark 1.3?

Muse Spark 1.3 leads the LLM Stats Score 55.1 to -4.5. MedGemma 4B IT is made by Google and Muse Spark 1.3 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 1.3 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 1.3 scores MRCR v2 (8-needle): 98.5%, MRCR v2 (8-needle, 512K-1M): 98.1%, DeepSearchQA: 89.4%, Terminal-Bench 2.1: 88.8%, DeepSWE 1.1: 75.4%.

What are the context window sizes for MedGemma 4B IT and Muse Spark 1.3?

MedGemma 4B IT supports an unknown number of tokens and Muse Spark 1.3 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 1.3?

Key differences include LLM Stats Score (-4.5 vs 55.1), licensing (Health AI Developer Foundations terms of use vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes MedGemma 4B IT and Muse Spark 1.3?

MedGemma 4B IT is developed by Google and Muse Spark 1.3 is developed by Meta.

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