模型

from deepagents import ProviderProfile, register_provider_profile

# 提供者级别默认设置：所有 OpenAI 模型的 temperature 参数设为 0。
register_provider_profile(
    "openai",
    ProviderProfile(init_kwargs={"temperature": 0}),
)

# 模型级别覆盖：gpt-5.5 额外设置特定的推理努力度。
# 继承自上述提供者级别配置中的 temperature=0。
register_provider_profile(
    "openai:gpt-5.5",
    ProviderProfile(init_kwargs={"reasoning_effort": "medium"}),
)

from dataclasses import dataclass
from typing import Callable

from langchain.agents.middleware import ModelRequest, ModelResponse, wrap_model_call
from langchain.chat_models import init_chat_model
from deepagents import create_deep_agent


@dataclass
class Context:
    model: str


@wrap_model_call
def configurable_model(
    request: ModelRequest,
    handler: Callable[[ModelRequest], ModelResponse],
) -> ModelResponse:
    model_name = request.runtime.context.model
    model = init_chat_model(model_name)
    return handler(request.override(model=model))


agent = create_deep_agent(
    model="google_genai:gemini-3.6-flash",
    middleware=[configurable_model],
    context_schema=Context,
)

# 使用用户选择的模型进行调用
result = agent.invoke(
    {"messages": [{"role": "user", "content": "你好！"}]},
    context=Context(model="openai:gpt-5.5"),
)