Google ADK vs Mastra: Which is Better in 2026?
Choosing between Google ADK and Mastra? Both are popular agent framework tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.
Quick verdict
Both Google ADK and Mastra are strong agent framework choices. The right pick comes down to your specific feature needs, existing stack, and team preferences.
Google ADK vs Mastra — Side by Side
| Google ADK | Mastra | |
|---|---|---|
| Category | Agent Framework | Agent Framework |
| Pricing | Free | Free |
| Starting price | Free tier available | Free tier available |
| Free tier | ||
| Rating | 4.4 | 4.6 |
| Best for | Agent Framework — ai, llm | Agent Framework — ai, llm |
Pros & Cons
- Deep GCP / Vertex AI integration
- Strong multi-agent support
- Model-agnostic via LiteLLM
- Backed by Google
- Best value tied to Google Cloud
- Younger ecosystem than LangChain
- Best-in-class for TypeScript teams
- Batteries-included (agents, workflows, memory, evals)
- From the experienced Gatsby team
- Strong observability & MCP support
- Younger than Python frameworks
- TypeScript-only ecosystem
Key Features Compared
Google ADK
- Multi-agent orchestration
- Gemini-optimized, model-agnostic (LiteLLM)
- Built-in evaluation
- Tooling & code execution
- Python & Java
Mastra
- TypeScript-native agents & workflows
- Memory & semantic recall
- Evals & observability
- MCP tool sharing
- 3,300+ models via providers
Choose Google ADK if…
- You want a free tier to validate before paying.
- Deep GCP / Vertex AI integration
- Strong multi-agent support
- Model-agnostic via LiteLLM
Choose Mastra if…
- You want a free tier to validate before paying.
- Best-in-class for TypeScript teams
- Batteries-included (agents, workflows, memory, evals)
- From the experienced Gatsby team
Frequently Asked Questions
Is Google ADK better than Mastra?⌄
Both Google ADK and Mastra are strong agent framework choices. The right pick comes down to your specific feature needs, existing stack, and team preferences.
What is the difference between Google ADK and Mastra?⌄
Google ADK — Google's open-source Agent Development Kit — multi-agent systems optimized for Gemini and Vertex AI, model-agnostic via LiteLLM. Mastra — Open-source TypeScript agent framework from the Gatsby team — agents, workflows, memory, and observability in one modern stack. Both are agent framework tools; the comparison table above breaks down pricing, free tiers, and what each is best for.
Google ADK vs Mastra: which is cheaper?⌄
Google ADK pricing: Free. Mastra pricing: Free. Confirm current pricing on each tool's official site, as plans change.
Which is rated higher, Google ADK or Mastra?⌄
In our catalog, Google ADK rates 4.4 out of 5 and Mastra rates 4.6 out of 5, so Mastra has a slight edge on reviews.
See more options in our guide to the best agent framework tools for startups.
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