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Compare tools by what matters to you
See how reviewed tools stack up for your needs. Every value comes from a published JAVIS review.
| Feature / criteria | Google Agent Development Kit (ADK)AI Agent Frameworks | WeaviateAI Data & Retrieval |
|---|---|---|
| JAVIS Score | 78 / 100 | 87 / 100 |
| Price | Free | $45/mo |
| Pricing model | Open source | Open source |
| Free tier | ✓ Yes | ✓ Yes |
| Open source | ✓ Yes | ✓ Yes |
| Our verdict | ADK is genuinely serious engineering. "Free" is true of the framework, not of what running it actually costs. | Weaviate kept its promise on the license. It quietly built the plumbing to change that later. |
| Last checked | Oct 4, 2026 | Oct 4, 2026 |