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📖 The AI Tool Bible

Google Agent Development Kit (ADK) vs Skyvern

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

 
Google Agent Development Kit (ADK)
Agents
Skyvern
Agents
TaglineGoogle's open-source framework for building, evaluating, and deploying production AI agentsAI browser agent that automates web workflows from natural-language instructions, with CAPTCHA and 2FA handling built in.
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).Freemium· Free: $0/month · Hobby: $29/month · Pro: $149/month · Enterprise: Custom/month
ModelGemini (default) plus Claude, GPT-4/5, Llama, and other providers via LiteLLMMulti-model (OpenAI, Anthropic, Gemini, Ollama)
Editorial score—8.3 / 10
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
browser-automationdata-extractionform-fillingaccounts-payablelead-generationbrowser-testing
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
  • Handles CAPTCHA and 2FA natively, unlike most RPA tools
  • Open source (AGPL-3.0) and self-hostable via Docker
  • LLM-agnostic: works with OpenAI, Anthropic, Gemini, or Ollama
  • SOC2 Type II + HIPAA with enterprise integrations (Salesforce, Workday)
  • Free tier with 5,000 credits and no credit card required
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
  • AGPL-3.0 license is restrictive for closed-source commercial embedding
  • Credit-based pricing can get expensive at high volume
  • Browser-agent runs are slower and less deterministic than real APIs
  • Effectiveness still varies on heavily JS-driven or anti-bot-hardened sites
Websitegoogle.github.iowww.skyvern.com
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 Skyvern if
  • ✅ Handles CAPTCHA and 2FA natively, unlike most RPA tools
  • ✅ Open source (AGPL-3.0) and self-hostable via Docker
  • ✅ LLM-agnostic: works with OpenAI, Anthropic, Gemini, or Ollama
  • ✅ SOC2 Type II + HIPAA with enterprise integrations (Salesforce, Workday)
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