CopilotKit vs Harvey
Which Developer Tools AI tool is better in 2026?
CopilotKit
Open-source framework for building in-app AI copilots and agentic UIs
Harvey
The AI platform for elite law firms.
Side-by-side
Harvey leads on both fronts — more capital raised ($1.7B) and a lower entry price than CopilotKit.
| Metric | CopilotKit | Harvey |
|---|---|---|
| Taglinei | Open-source framework for building in-app AI copilots and agentic UIs | The AI platform for elite law firms. |
| Foundedi | 2023 | 2022🏆 |
| HQi | Seattle, US | San Francisco, US |
| Employeesi | 11-50 | 201-500🏆 |
| Neuron scorei | 56 | 82🏆 |
| Total fundingi | $27M | $1.7B🏆 |
| Latest roundi | Series A · May 2026 | Growth · Mar 2026 |
| Valuationi | — | $11B🏆 |
| Cheapest paid plani | Pricing not disclosed | —🏆 |
| Free plani | ✓ | ✗ |
| Free triali | ✗ | ✗ |
| Top tier pricei | Pricing not disclosed | Enterprise · Contact sales |
| Pricing summaryi | Open source | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for CopilotKit and Harvey.
| Capability | CopilotKit | Harvey |
|---|---|---|
| MCP support | ✗ | ✓ |
| Public API | ✓ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of CopilotKit
- Offers a free plan
- Newer company (2023)
🔵 Strengths of Harvey
- Has raised more capital ($1.7B vs $27M)
- Higher Neuron score (82 vs 56)
- More mature (2022)
Which should you choose?
Choose Harvey if price matters most — it starts at Paid, which is friendlier for teams watching burn. Both AI Developer Tools tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Harvey if you want the most established option — it has raised $1.7B, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
CopilotKit vs Harvey — which is better?
It depends on your priority. CopilotKit is the leaner option; Harvey is cheaper to start. See the side-by-side table above.
Is CopilotKit cheaper than Harvey?
No — Harvey's cheapest paid plan is Paid, while CopilotKit's is Open source.
Do CopilotKit and Harvey offer free plans?
CopilotKit: Yes, has a free plan. Harvey: Paid only.
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