AI Model Comparison
Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.
Model A — Google DeepMind
Gemini 3.8 Flash is a model from Google, made generally available on September 2, 2026, which Google describes as its most intelligent Flash model, for long-horizon software engineering, autonomous agents and complex enterprise workflows. It takes text, image, video, audio and PDF input and returns text, with thinking support.
Model B — Meta
Muse Spark Open is an open-weight mixture-of-experts model from Meta, released on October 15, 2026, with 816B total and 42B active parameters. It takes text, image, video and audio input and returns text. Meta's own Model API does not serve it: it is self-hosted or run through hosted providers.
| Property | Gemini 3.8 Flash | Muse Spark Open |
|---|---|---|
| Released | Sep 2, 2026 | Oct 15, 2026 |
| Developer | Google DeepMind | Meta |
| Type | multimodal | multimodal |
| License | proprietary | open-weight |
| Context window | 1,048,576 | 1,048,576 |
| Parameters | — | 816B total, 42B active (mixture of experts) |
| Developer status | — | — |
| Input $/M tokens | $0.75 | — |
| Output $/M tokens | $3.75 | — |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.
Programmatic access available at /api/ai/compare?a=gemini-3-8-flash&b=muse-spark-open. CORS is open. Citation guidance: /about/editorial-process.