Compare
Copilotz, compared.
Honest comparisons with the TypeScript tools people weigh against Copilotz. Each one says where the other is stronger, and links a source for every claim.
Checked on 12 November 2026.
Copilotz in one paragraph
Copilotz is an open-source runtime, in TypeScript, for apps that people and AI use alike. You write the app once, as plugins: its data, the Actions that change it, an allow on each that says who may call it, rules checked at the data, and Views for a web page, a terminal or a model's prompt. People use it on the web; the app's own agents call the same Actions through tools; ChatGPT, Claude and any MCP client call them over MCP; contacts reach it on WhatsApp and in a chat on your site. Every write lands on one record of who did what, for whom and where. It runs on Node, Deno and Bun, tests offline with a scripted model, and is MIT-licensed. 1.0 is still a release candidate.
Sources:copilotz.com: AGENTS.mdGitHub: copilotzhq/copilotz (README)GitHub: Copilotz releases
The comparisons
Copilotz vs Mastra
Mastra is the most complete agent framework in TypeScript: agents, workflows, memory, evals, MCP both ways, channels and a hosted platform, stable since January 2026. Copilotz is younger and narrower. It fits when your agents are one caller of an app that people also use, and you want access rules and a record of who did what built in.
Read the comparisonCopilotz vs the Vercel AI SDK
The Vercel AI SDK is a toolkit for calling models and building chat interfaces, and the most widely used one. It leaves storage, users and permissions to you, by design. Copilotz is a runtime for the whole app: data, Actions, rules, Views and the record, with agents and MCP on top.
Read the comparisonCopilotz vs LangChain.js
LangChain.js builds agents on LangGraph, with hundreds of integrations and LangSmith for tracing and deployment. It's the stronger choice for retrieval and breadth of integrations. Copilotz puts the app first, with per-user rules at the data and one record of who did what, in the open-source runtime.
Read the comparison