Quick Start
- 1
- 2Use the Anthropic SDK or REST API to call
claude-3-5-sonnet-v2— see the documentation for request format.
Code Examples
Install
pip install anthropicAPI key
ANTHROPIC_API_KEYModel ID
claude-3-5-sonnet-v2Use the versioned model ID, e.g. "claude-sonnet-4-6" or "claude-opus-4-7-20251101".
import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-3-5-sonnet-v2",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}]
)
print(message.content[0].text)About Anthropic
Creator of Claude AI models, accessed via the Anthropic API and the Anthropic Console (console.anthropic.com). The Console hosts the Workbench prompt playground, API keys, usage analytics, and team billing.
Anthropic is a safety-focused AI research company and creator of the Claude model family, offering API access through the Anthropic Console for text generation, analysis, and coding tasks.
Pricing on Anthropic
Capabilities
VisionMultimodalStructured Outputs
About Claude 3.5 Sonnet v2
Advanced reasoning and coding model with improved performance, supports cached context for cost savings
Model Specs
Released2025-12-01
Context200k
Knowledge cutoff2024-04