Anthropic

Using Anthropic Claude models with Upsonic

Overview

Anthropic provides the Claude family of models known for safety, accuracy, and extended thinking capabilities. Upsonic supports all Claude models including Claude 3.5, Claude 3.7, and Claude 4.

Model Class: AnthropicModel

Authentication

export ANTHROPIC_API_KEY="sk-ant-..."

Examples

from upsonic import Agent, Task
from upsonic.models.anthropic import AnthropicModel

model = AnthropicModel(model_name="claude-3-5-sonnet-20241022")
agent = Agent(model=model)

task = Task("Hello, how are you?")
result = agent.do(task)
print(result)

Model Settings

You can set model parameters in two ways: on the model or on the Agent.

On the model:

from upsonic import Agent, Task
from upsonic.models.anthropic import AnthropicModel, AnthropicModelSettings

model = AnthropicModel(
    model_name="claude-sonnet-4-5",
    settings=AnthropicModelSettings(max_tokens=2048, temperature=0.5)
)
agent = Agent(model=model)

On the Agent:

from upsonic import Agent, Task
from upsonic.models.anthropic import AnthropicModelSettings

agent = Agent(
    model="anthropic/claude-sonnet-4-5",
    settings=AnthropicModelSettings(max_tokens=2048, temperature=0.5)
)

Parameters

Parameter	Type	Description	Default	Source
max_tokens	int	Maximum tokens to generate	4096	Base
temperature	float	Sampling temperature (0.0-1.0)	1.0	Base
top_p	float	Nucleus sampling threshold	1.0	Base
stop_sequences	list[str]	Sequences that stop generation	None	Base
timeout	float	Request timeout in seconds	600	Base
extra_headers	dict[str, str]	Additional HTTP headers	None	Base
anthropic_metadata	dict	Request metadata with user_id	None	Specific
anthropic_thinking	dict	Extended thinking configuration	None	Specific