In short
How they differ.
Worked out from the figures below. Prices and specs are the makers' own, read Oct 20, 2026.
- Muse Spark Open reads more at once: a context window of 1M tokens against 256K.
- Both can be downloaded and run on your own machine.
- No independent board we follow ranks both models yet.
Side by side
The specs.
| Gemma 4 31B | Muse Spark Open | |
|---|---|---|
| Made by | Google · US | Meta · US |
| Released | Apr 2, 2026 | Oct 15, 2026 |
| Price per 1M tokens | Free to download; hosts set prices | Free to download; hosts set prices |
| Context window | 256K | 1M |
| Takes in | text, image, video | text, image, video, audio |
| Download and run it yourself | Yes (Apache 2.0) | Yes (Muse Model License) |
| Size | 30.7B (dense) parameters | 816B parameters, 42B active |
| Maker says | “Today, we are introducing Gemma 4 — our most intelligent open models to date.” | “The most capable US open-weight model to date. Build your way, anywhere.” |
| Sources | Prices, Oct 20, 2026 · Description | Prices, Oct 20, 2026 · Description |
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