Google Agent Development Kit (ADK) vs Mastra
Google Agent Development Kit (ADK) and Mastra are both agent frameworks for TypeScript. Google Agent Development Kit (ADK) is published by Google and Mastra by Mastra. On GitHub, Mastra has 29,050 stars and Google Agent Development Kit (ADK) has 21,990. Both were last active in Oct 2026. The table lines up where they differ (publisher, weekly downloads and languages) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Google Agent Development Kit (ADK) describes itself as: Open-source toolkit for building, evaluating and deploying agents in Python, TypeScript, Go, Java and Kotlin, tuned for Gemini but model-agnostic. Mastra: TypeScript framework for AI agents and apps with graph-based workflows, memory, suspend-and-resume approvals, MCP servers and model routing. Licenses: Google Agent Development Kit (ADK) Apache-2.0, Mastra unknown.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
Google Agent Development Kit (ADK)
Open-source toolkit for building, evaluating and deploying agents in Python, TypeScript, Go, Java and Kotlin, tuned for Gemini but model-agnostic.
Mastra
Mastra
TypeScript framework for AI agents and apps with graph-based workflows, memory, suspend-and-resume approvals, MCP servers and model routing.
Who should pick which
- Pick Google Agent Development Kit (ADK) if you work in Python and Go.
- Pick Google Agent Development Kit (ADK) if you need several agents working together.
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | Google Agent Development Kit (ADK) | Mastra |
|---|---|---|
| Type | Harness | Harness |
| Publisher | Mastra | |
| License | Apache-2.0 | License unknown |
| 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 | 21,990 | 29,050 |
| Weekly downloads | 2,355,953 | 1,442,185 |
| Last release | Oct 23, 2026 | Oct 21, 2026 |
| Last activity | Oct 24, 2026 | Oct 24, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
Google Agent Development Kit (ADK)
pip install google-adk
Mastra
npm install @mastra/core
Also consider
- 0.791score
ADK for Go
Google
Code-first Go toolkit for building agents with a tool ecosystem, composable multi-agent systems and Cloud Run deployment.
HarnessAFreshness: A★ 8.9K - 0.777score
ADK for TypeScript
Google
TypeScript toolkit for agents with Zod-typed tools, graph and multi-agent workflows, and Node.js or browser runtimes.
HarnessAFreshness: A★ 1.4K↓ 143.5K/wk - 0.771score
Ax
Ax
DSPy-style toolkit for typed LLM signatures, agents and flows, TypeScript-first with Python, Java, C++, Go and Rust libraries.
HarnessAFreshness: A★ 3K↓ 27.2K/wk
Questions
- Is Google Agent Development Kit (ADK) or Mastra more popular?
- Mastra has more GitHub stars (29,050 against 21,990). Stars measure attention, not quality, so check freshness and docs too.
- Are Google Agent Development Kit (ADK) and Mastra open source?
- Google Agent Development Kit (ADK) is open source (Apache-2.0); the other is unknown.
Related
- AlternativesAlternatives to Google Agent Development Kit (ADK)
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Cite this page
Google Agent Development Kit (ADK) vs Mastra. Agent Mart. https://agentmart.dev/compare/google-agent-development-kit-adk-vs-mastra (last updated 2026-10-26)