Google Agent Development Kit vs Kopern

Google Agent Development Kit (ADK) is an open-source framework for building, debugging, evaluating, and deploying AI agents. It is available in Python, TypeScript, Go, Java, and Kotlin. Graph-based workflows can combine deterministic code with adaptive AI reasoning, and hierarchical agents can delegate work to specialized agents. ADK supports Gemini and adapters for other model providers, including locally running models. Its integrations catalog includes tools and connectors for MCP, Google Cloud, databases, search, observability, and third-party services. Teams can create multi-turn evaluation datasets and run evaluations locally through the CLI or development UI. ADK also supports live agents with bidirectional text and audio streaming, manages session context, and connects to longer-term memory services. Deployment options include Google Cloud Agent Runtime, Cloud Run, GKE, container-friendly infrastructure, and local Docker or Podman environments. Security guidance covers identity, authorization, guardrails, sandboxed code execution, and network controls. ADK is free; model and cloud-service use may require separate access or billing. Agent Config is narrower: it currently supports only Gemini models and requires Python.

Kopern is a no-code AI agent builder for configuring, testing, grading, deploying, and monitoring agents through web and API access. Agents can combine system prompts, skills, tools, extensions, and multiple models. Grading checks output matching, schemas, tool use, safety, and LLM judgments. The Optimization Lab includes prompt tuning, automated fixes, adversarial testing, model tournaments, evolution, and distillation. Connectors include WhatsApp, Telegram, Slack, GitHub, webhooks, MCP, and an embeddable chat widget; workflow orchestration connects to n8n, Zapier, and Make. Monitoring supports regression tests and Slack or email alerts when quality falls below a threshold. Authenticated endpoints include an OpenAI-compatible chat-completions API. Kopern lists human approvals, web browsing, security controls, and compliance badges. Plans range from free Starter to Pro at $79 a month and Enterprise at $499 a month; Usage is pay per use with no listed plan price.