Hy4 preview vs Muse Spark 1.3
Muse Spark 1.3 leads the LLM Stats Score 55.4 to 51.3.
Tencent · Meta · Updated for 2026
Which is better?
Muse Spark 1.3 leads the overall LLM Stats Score 55.4 to 51.3, ranking #5 overall.
In the 4 individual benchmarks reported for both models, Muse Spark 1.3 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 Hy4 preview
- you need open weights you can self-host or fine-tune
Choose Muse Spark 1.3
- overall performance matters — it scores 55.4 and ranks #5 on LLM Stats
- your work emphasizes agents — it leads those capability indexes
- you value its reported benchmark strengths — it wins 4 of 4 exact shared results
- you want the most recent training data — it shipped Sep 2026
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
32 reported for Hy4 preview · 11 for Muse Spark 1.3
Hy4 preview outperforms in 0 benchmarks, while Muse Spark 1.3 is better at 4 benchmarks (AutomationBench, GDPval-AA, Job Bench, Terminal-Bench 2.1).
Muse Spark 1.3 significantly outperforms across most benchmarks.
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).
Input capabilities
Documented input modalities across available providers
Muse Spark 1.3 supports multimodal inputs, whereas Hy4 preview does not.
Muse Spark 1.3 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Hy4 preview
Muse Spark 1.3
License
Usage and distribution terms
Hy4 preview is licensed under Apache 2.0, 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.
Apache 2.0
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Hy4 preview was released on 2026-08-28, while Muse Spark 1.3 was released on 2026-09-02.
Muse Spark 1.3 is 0 month newer than Hy4 preview.
Aug 28, 2026
5 days ago
Sep 2, 2026
0 days ago
5d newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against Hy4 preview and Muse Spark 1.3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Hy4 preview vs Muse Spark 1.3.