Registry › Compare › CopilotKit vs OpenUI

CopilotKit vs OpenUI

OpenUI leads on trust: 88.8/100 (Grade A) against 80.8/100 (Grade A), a 8.0-point gap. CopilotKit leads on adoption and rests on broader evidence; OpenUI leads on supply-chain integrity and transparency. Note: OpenUI's evidence coverage is thinner (coverage B vs A) — its score rests on fewer independent signal types.

A CopilotKit 80.8

The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol

CopilotKit/CopilotKit · #155 overall · #5 UI & App Builders · coverage A (4/5)

Choose CopilotKit if adoption matters most.

+2.5Adoption: 472k weekly downloads against 61.1k
A vs BEvidence coverage: 4 of 5 independent signal types, against 3

A OpenUI 88.8

The Open Standard for Generative UI

thesysdev/openui · #39 overall · #1 UI & App Builders · coverage B (3/5)

Choose OpenUI if supply-chain integrity and transparency matter most.

+8.7Safety / Integrity: 100% of recent commits signed, against 57%
+4.4Transparency

Where they differ

10.3

Safety / IntegrityOpenUI +8.7

19.0

8.5

TransparencyOpenUI +4.4

12.9

18.6

AdoptionCopilotKit +2.5

16.1

+5.4

Runtime calibrationCopilotKit +2.6

+2.8

2 dimensions identical: Identity 18.0 · Maintenance 20.0 · Full evidence table

An independent, evidence-based trust comparison of CopilotKit and OpenUI, two UI & App Builders projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.

Full evidence

Signal	CopilotKitCopilotKit/CopilotKit	OpenUIthesysdev/openui
HVTrust score	80.8	88.8
Evidence grade	A	A
Coverage grade	A	B
Overall rank	#155	#39
Rank in UI & App Builders	#5	#1
GitHub stars	38.1k	11.5k
Last updated	today	today
Build provenance	Yes	Yes
OSSF Scorecard	—	5.2 / 10
License	MIT	MIT
Downloads	472k/wk	61k/wk
Trust dimensions (points earned)
Safety / integrity / 25	10.3	19.0
Identity & provenance / 18	18.0	18.0
Transparency / 17	8.5	12.9
Maintenance / 20	20.0	20.0
Adoption / 20	18.6	16.1
Runtime capability surface (full matrix)
MCP server	Implemented	—
External providers	1 — Anthropic	1 — OpenAI
Requires API keys	No	No
Plugin surface	plugins	—
Provenance drift	Match	Match

Open in the live compare tool → CopilotKit profile OpenUI profile More UI & App Builders →

How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption, scaled by an evidence-confidence factor. Grade bands: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Signals refresh daily. Full methodology v4.4 →