Providers

pureagents supports multiple LLM providers.

Available providers

Provider	Default model	Environment variable
mistral	mistral-large-latest	MISTRAL_API_KEY
openai	gpt-5.2-instant	OPENAI_API_KEY
anthropic	claude-sonnet-4-5-20250929	ANTHROPIC_API_KEY

Mistral (default)

from pure_agents import Agent

# Uses MISTRAL_API_KEY from environment
agent = Agent()

# Or explicit
agent = Agent(api_key="your-mistral-key")

# Specific model
agent = Agent(model="mistral-small-latest")

OpenAI

agent = Agent(provider="openai")

# GPT-5.2 variants
agent = Agent(provider="openai", model="gpt-5.2-instant")   # Fast
agent = Agent(provider="openai", model="gpt-5.2-thinking")  # Reasoning
agent = Agent(provider="openai", model="gpt-5.2-pro")       # Best quality
agent = Agent(provider="openai", model="gpt-5.2-codex")     # Code

Anthropic

agent = Agent(provider="anthropic")

# Claude variants
agent = Agent(provider="anthropic", model="claude-sonnet-4-5-20250929")
agent = Agent(provider="anthropic", model="claude-opus-4-5-20251101")

Explicit API key

You can pass the API key directly:

agent = Agent(
    provider="openai",
    api_key="sk-..."
)

warning

Don't commit API keys to your repository. Use environment variables.

Custom base URL

For self-hosted or proxy endpoints, modify the client directly:

from pure_agents.clients import LLMClient

client = LLMClient(
    api_key="your-key",
    base_url="https://your-proxy.com/v1"
)