Google Agent Development Kit

Web · Windows · Mac · Linux · Self-hosted · API

Freedom report

Three barsScore 6.6

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely4 of 6 device platforms
DocumentedPlans, terms and facts published

Google Agent Development Kit is ranked #5 of 73 in AI agent platforms on Freedom251. It runs on API, Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

Google Agent Development Kit plans and pricing

All plans

Google Agent Development Kit (ADK) Free Open-source framework; model and cloud service usage may require separate access or billing adk.dev · 4 Oct 2026

Compared on AI agent platforms

Free plan: Yes
Deployment model: both
Visual agent builder: Yes
Multi-agent support: Yes
Knowledge grounding: Yes
Voice agent support: Yes
Human handoff: Yes

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The record

Purpose: ADK is an open-source framework for building, debugging, evaluating, and deploying AI agents.
Languages: ADK is available for Python, TypeScript, Go, Java, and Kotlin.
Workflows: ADK supports graph-based workflows that combine deterministic code with adaptive AI reasoning.
Multi-agent: Agents can be arranged hierarchically and delegate tasks to specialized agents.
Models: ADK supports Gemini and adapters for other model providers, including locally running models.
Integrations: The integrations catalog includes tools and connectors for MCP, Google Cloud, databases, search, observability, and third-party services.
Evaluation: ADK includes tools to create multi-turn evaluation datasets and run evaluations locally through the CLI or development UI.
Voice: ADK supports live agents with bidirectional text and audio streaming.
Deployment: Agents can be deployed to Google Cloud Agent Runtime, Cloud Run, GKE, or other container-friendly infrastructure, including local Docker or Podman environments.
Security: The security guidance covers identity and authorization, input and output guardrails, sandboxed code execution, and network controls.
Context and memory: ADK manages session context and provides integration points for longer-term memory services.
Installation: The installation guide provides package installation instructions for all five supported languages.
Support: The site links to community resources and says Google and the ADK team do not support the content in external community resources.
Notable limitation: Agent Config currently supports only Gemini models and requires Python.
Price from: Free

Where it ranks on Freedom251

Best AI Agent Platforms in 2026#5 of 73

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Sources

adk.dev· checked 4 Oct 2026
adk.dev/get-started/about/· checked 4 Oct 2026
adk.dev/integrations/· checked 4 Oct 2026
adk.dev/deploy/· checked 4 Oct 2026
adk.dev/safety/· checked 4 Oct 2026
adk.dev/get-started/installation/· checked 4 Oct 2026
adk.dev/community/· checked 4 Oct 2026
adk.dev/agents/config/· checked 4 Oct 2026