Quickstart

from tokensense import observe
import anthropic

client = observe(anthropic.Anthropic())

response = client.messages.create(
    model="claude-sonnet-4-6",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Explain async/await in Python"}]
)
print(response.content[0].text)

→ ✓ model=claude-sonnet-4-6 | in=18 out=312 tokens | $0.0052 | 847ms