What are the supported models in Google ADK? Explain all model providers and how to use them.

All Supported Models in Google ADK

Google ADK supports 100+ LLMs across 8 model providers, from Google Gemini to local Ollama models.

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Model Provider Architecture

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All Model Providers

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Code Examples

Gemini (Direct)

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agent = Agent(name="a", model="gemini-2.5-flash", instruction="...")

OpenAI (LiteLLM)

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from google.adk.models.lite_llm import LiteLlm
agent = Agent(name="a", model=LiteLlm(model="openai/gpt-4o"), instruction="...")

Anthropic (Registry)

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from google.adk.models.anthropic_llm import Claude
from google.adk.models.registry import LLMRegistry
LLMRegistry.register(Claude)
agent = Agent(name="a", model="claude-sonnet-4-6", instruction="...")

Ollama (Local)

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import os
os.environ["OLLAMA_API_BASE"] = "http://localhost:11434"
from google.adk.models.lite_llm import LiteLlm
agent = Agent(name="a", model=LiteLlm(model="ollama_chat/gemma3:latest"), instruction="...")

vLLM (Self-hosted)

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from google.adk.models.lite_llm import LiteLlm
agent = Agent(name="a", model=LiteLlm(model="hosted_vllm/google/gemma-3-4b-it"), instruction="...")

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Model Feature Support

Pro tip: Start with Gemini for full feature access, then expand to other models as needed.

Learn more at Models Overview.