Google ADK

Google's open-source Agent Development Kit.

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Pricing

Model: free (open source)
Starting price: Not listed — check the vendor site

Niches

Best for

Build an AI agent in code

▸ Model-agnostic, deploys easily to Google Cloud.

Related use cases

Add long-term memory and knowledge to an agent Build a full-stack web app from a prompt Build agent workflows without coding Launch a phone/voice AI agent