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 — Z.ai (Zhipu AI)
GLM-5.3-Flash is the first natively multimodal model in Z.ai's GLM-5 series, with 320B total and 18B activated parameters and a hybrid of linear and sparse attention. Its weights are released under the MIT licence.
Model B — Meta
Muse Spark 1.3 is the latest version of Meta's Muse Spark model, released on September 2, 2026 and tuned for agentic workflows and coding. It takes text, image, video, audio and PDF input and returns text, with reasoning effort up to 'max'. Meta says audio input is not yet fully supported.
| Property | GLM-5.3-Flash | Muse Spark 1.3 |
|---|---|---|
| Released | Aug 26, 2026 | Sep 2, 2026 |
| Developer | Z.ai (Zhipu AI) | Meta |
| Type | multimodal | multimodal |
| License | open-weight | proprietary |
| Context window | — | 1,048,576 |
| Parameters | 320B total, 18B activated | — |
| Developer status | — | — |
| Input $/M tokens | $0.15 | $1.25 |
| Output $/M tokens | $0.50 | $4.25 |
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.
No exclusive capabilities
No exclusive capabilities
Programmatic access available at /api/ai/compare?a=glm-5-3-flash&b=muse-spark-1-3. CORS is open. Citation guidance: /about/editorial-process.