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📖 The AI Tool Bible

Google Agent Development Kit (ADK) vs Lindy

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

 
Google Agent Development Kit (ADK)
Agents
Lindy
Agents
TaglineGoogle's open-source framework for building, evaluating, and deploying production AI agentsNo-code AI agents for email, meetings, and the rest of your admin work
CategoryAgentsAgents
PricingFree· Framework itself is free and open-source (Apache 2.0). Costs come from the underlying model provider (e.g. Gemini API / Vertex AI usage) and any hosting infrastructure (Cloud Run, GKE, Agent Engine).Paid· Human assistant: $8,000 · Plus: $49.99 · Pro: $99.99 · Max: $199.99 · Enterprise: Contact sales
ModelGemini (default) plus Claude, GPT-4/5, Llama, and other providers via LiteLLMFrontier LLMs (Anthropic Claude and OpenAI GPT families) selected per task; not user-configurable
Editorial score
Use cases
Multi-agent research assistantCustomer support triage agentRAG chatbot backed by Vertex AI SearchCode review and refactoring agentBigQuery natural-language analytics agentDocument processing pipelineVoice/streaming conversational agentInternal tool-use agent orchestrating APIsEvaluation and regression testing of LLM workflowsEnterprise workflow automation on Agent Engine
AI executive assistantInbox triage and email draftingMeeting scheduling over emailMeeting notes and action-item extractionSDR outbound and lead qualificationRecruiting inbound triage and interview bookingCRM data entry and enrichmentCustomer support ticket autoresponseMulti-step workflow automationBrowser computer-use for API-less sites
Pros
  • Genuinely open-source (Apache 2.0) with active Google engineering behind it, not a hosted-only product
  • Multi-language: first-class Python, Java, and Go SDKs — rare among agent frameworks that are usually Python-only
  • Built-in dev UI (`adk web`) with trace inspection, event stream, and session replay speeds up debugging enormously
  • Model-agnostic via LiteLLM — Gemini is default but Claude, GPT, and local models plug in cleanly
  • Rich multi-agent primitives out of the box: SequentialAgent, ParallelAgent, LoopAgent, and hierarchical sub-agents
  • Tight Google Cloud integration for deployment (Cloud Run, GKE, Agent Engine) plus native BigQuery/Vertex Search tools
  • Evaluation harness with trajectory-level scoring is included, not a separate paid add-on
  • First-class MCP (Model Context Protocol) client and server support
  • Visual, no-code agent builder with triggers, branches, and inter-agent hand-offs — non-developers ship working automations quickly
  • Deep first-party integrations with Gmail, Google Calendar, Slack, HubSpot, Salesforce, Zoom, and 3,000+ apps
  • Meeting agent that can join Zoom/Meet calls, transcribe, extract action items, and push them into your CRM or task tracker
  • SMS/iMessage and phone-call channels let you delegate to a Lindy without opening the web app
  • Higher-tier computer-use agent handles sites and workflows that have no API
  • Enterprise controls (SSO/SCIM, HIPAA, shared usage pool, dedicated onboarding) suitable for regulated teams
  • Shared memory across agents so a contact recognised by one Lindy is remembered by the others
Cons
  • Documentation and examples lean heavily on Gemini + Google Cloud; non-Google paths work but feel like second-class citizens
  • API surface is still evolving — breaking changes between minor versions have been common through 2025-2026
  • Multi-agent orchestration primitives are powerful but the graph/callback model has a real learning curve compared to a plain prompt loop
  • Agent Engine deployment is convenient but locks you into GCP billing and quotas
  • TypeScript/Kotlin support lags the Python SDK in features and community examples
  • No free tier — after the 7-day trial every seat is a real monthly cost, and heavier automations push you up the tiers fast
  • Task-credit meter can be opaque; long-running or computer-use flows burn usage in ways that are hard to predict in advance
  • Closed-source and cloud-only — no self-hosted option, and you cannot pin or swap the underlying model
  • Public developer API and webhooks-as-a-first-class-citizen are limited compared with orchestration frameworks like n8n or LangGraph
  • Reliability on long agentic chains still requires human review, especially for outbound email sent in your voice
  • Pricing is per-inbox rather than per-seat, which gets awkward for teams with shared mailboxes
Websitegoogle.github.iowww.lindy.ai
Pick Google Agent Development Kit (ADK) if
  • Genuinely open-source (Apache 2.0) with active Google engineering behind it, not a hosted-only product
  • Multi-language: first-class Python, Java, and Go SDKs — rare among agent frameworks that are usually Python-only
  • Built-in dev UI (`adk web`) with trace inspection, event stream, and session replay speeds up debugging enormously
  • Model-agnostic via LiteLLM — Gemini is default but Claude, GPT, and local models plug in cleanly
Pick Lindy if
  • Visual, no-code agent builder with triggers, branches, and inter-agent hand-offs — non-developers ship working automations quickly
  • Deep first-party integrations with Gmail, Google Calendar, Slack, HubSpot, Salesforce, Zoom, and 3,000+ apps
  • Meeting agent that can join Zoom/Meet calls, transcribe, extract action items, and push them into your CRM or task tracker
  • SMS/iMessage and phone-call channels let you delegate to a Lindy without opening the web app