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See how reviewed tools stack up for your needs. Every value comes from a published JAVIS review.
| Feature / criteria |  ModalAI Agent Frameworks |  LangGraphAI Agent Frameworks |
|---|---|---|
| JAVIS Score | 76 / 100 | 88 / 100 |
| Price | Free ($30/month compute credit); usage from $0.59/hr (T4 GPU) | $39/seat/mo |
| Pricing model | Usage-based | Open source |
| Free tier | — | ✓ Yes |
| Open source | ✕ No | ✓ Yes |
| Our verdict | Python-first serverless GPUs and sandboxes billed per second (H100 $3.95/hr, $30/month free compute); watch idle-time billing, region and sandbox multipliers, and cold starts. | LangGraph didn't win the "which agent framework" argument by being the friendliest. It won by being the one that doesn't fall over. |
| Last checked | Nov 4, 2026 | Oct 21, 2026 |
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