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See how reviewed tools stack up for your needs. Every value comes from a published JAVIS review.
| Feature / criteria |  LangChain (with LangSmith)AI Agent Frameworks |  Microsoft Agent FrameworkAI Agent Frameworks |
|---|---|---|
| JAVIS Score | 69 / 100 | 85 / 100 |
| Price | $39/seat/month | Free |
| Pricing model | Freemium | Open source |
| Free tier | ✓ Yes | ✓ Yes |
| Open source | ✕ No | ✓ Yes |
| Our verdict | A free MIT-licensed agent framework with huge adoption, paired with LangSmith at $0 or $39 a seat whose trace overage rose from $0.50 to $5 per 1,000 in under a year; strong compliance, persistent developer criticism. | This isn't Microsoft's first agent framework. It's Microsoft admitting the first two weren't going to converge on their own. |
| Last checked | Oct 16, 2026 | Oct 5, 2026 |
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