CopilotKit vs OpenAI Agents SDK (JavaScript)
CopilotKit and OpenAI Agents SDK (JavaScript) are both agent frameworks. CopilotKit is published by CopilotKit and OpenAI Agents SDK (JavaScript) by OpenAI. On GitHub, CopilotKit has 38,211 stars and OpenAI Agents SDK (JavaScript) has 3,939. Both were last active in Oct 2026. The table lines up where they differ (publisher, GitHub stars, weekly downloads and category) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. CopilotKit describes itself as: Open-source SDK that connects AI agents to app front ends with chat UI, generative UI, shared state and human approvals; creator of the AG-UI protocol. OpenAI Agents SDK (JavaScript): TypeScript and JavaScript framework for multi-agent workflows with tools, handoffs, guardrails, sandboxes and voice agents. Licenses: CopilotKit MIT, OpenAI Agents SDK (JavaScript) MIT.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
CopilotKit
CopilotKit
Open-source SDK that connects AI agents to app front ends with chat UI, generative UI, shared state and human approvals; creator of the AG-UI protocol.
OpenAI Agents SDK (JavaScript)
OpenAI
TypeScript and JavaScript framework for multi-agent workflows with tools, handoffs, guardrails, sandboxes and voice agents.
Who should pick which
- Pick OpenAI Agents SDK (JavaScript) if you work in JavaScript.
- Pick OpenAI Agents SDK (JavaScript) if you need several agents working together.
- Pick OpenAI Agents SDK (JavaScript) if you want a stable release (CopilotKit is marked beta).
- CopilotKit has the larger community: 38,211 GitHub stars against 3,939.
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | CopilotKit | OpenAI Agents SDK (JavaScript) |
|---|---|---|
| Type | Harness | Harness |
| Publisher | CopilotKit | OpenAI |
| License | MIT | MIT |
| Pricing | Not stated | Not stated |
| Runs | Not stated | Not stated |
| Auth | Not stated | Not stated |
| Hosts supported | Not stated | Not stated |
| Tools | Not listed yet | Not listed yet |
| Security grade | –Security: not graded yet | –Security: not graded yet |
| Freshness grade | AFreshness: A | AFreshness: A |
| GitHub stars | 38,211 | 3,939 |
| Weekly downloads | 286,211 | 1,193,362 |
| Last release | Oct 16, 2026 | Oct 20, 2026 |
| Last activity | Oct 24, 2026 | Oct 21, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
CopilotKit
npm install @copilotkit/react-core
OpenAI Agents SDK (JavaScript)
npm install @openai/agents
Also consider
- 0.867score
Pi Agent Core
Earendil
Minimal TypeScript agent harness with an agent runtime, multi-provider LLM API, terminal UI and coding agent CLI that users extend themselves.
HarnessAFreshness: A★ 117.6K↓ 5.1M/wk - 0.799score
Letta
Letta
Open-source agent harness for stateful agents whose memory persists and improves with use, with a terminal UI, app server and TypeScript SDK.
HarnessAFreshness: A★ 25.2K↓ 40.7K/wk - 0.787score
trueforge
truefoundry
Open-source agent harness that runs the model loop for you, with MCP tools, skills, sandboxing, approvals and a chat UI.
HarnessAFreshness: A★ 6.4K
Questions
- Is CopilotKit or OpenAI Agents SDK (JavaScript) more popular?
- CopilotKit has more GitHub stars (38,211 against 3,939). Stars measure attention, not quality, so check freshness and docs too.
- Are CopilotKit and OpenAI Agents SDK (JavaScript) open source?
- Yes: CopilotKit is MIT and OpenAI Agents SDK (JavaScript) is MIT.
Related
- AlternativesAlternatives to CopilotKit
- AlternativesAlternatives to OpenAI Agents SDK (JavaScript)
- Best ofBest agent frameworks for TypeScript
- ComparisonCopilotKit vs Pi Agent Core
- ComparisonCopilotKit vs Letta
- ComparisonCopilotKit vs Deep Agents
- ComparisonOpenAI Agents SDK (JavaScript) vs PraisonAI
- ComparisonOpenAI Agents SDK (JavaScript) vs Pi Agent Core
Cite this page
CopilotKit vs OpenAI Agents SDK (JavaScript). Agent Mart. https://agentmart.dev/compare/copilotkit-vs-openai-agents-sdk-javascript (last updated 2026-10-26)