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See how reviewed tools stack up for your needs. Every value comes from a published JAVIS review.
| Feature / criteria |  LangflowAI Agent Frameworks |  OpenAI Agents SDKAI Agent Frameworks |
|---|---|---|
| JAVIS Score | 64 / 100 | 86 / 100 |
| Price | $0 | Free |
| Pricing model | Open source | Open source |
| Free tier | ✓ Yes | ✓ Yes |
| Open source | ✓ Yes | ✓ Yes |
| Our verdict | Free MIT-licensed visual builder for agents, RAG and MCP servers with visible tool calls, but the hosted cloud is gone and an exposed server needs constant patching and lockdown. | The SDK didn't get replaced by the Agents API. It got a sibling. |
| Last checked | Oct 23, 2026 | Oct 5, 2026 |
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