Claude Fable 5.1

curl https://api.anthropic.com/v1/messages \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-fable-5-1",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Refactor this function for O(n) time and explain the change."}]
  }'

import anthropic

client = anthropic.Anthropic()  # reads ANTHROPIC_API_KEY

msg = client.messages.create(
    model="claude-fable-5-1",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Refactor this function for O(n) time and explain the change."}],
)
print(msg.content[0].text)

const res = await fetch("https://api.anthropic.com/v1/messages", {
  method: "POST",
  headers: {
    "x-api-key": process.env.ANTHROPIC_API_KEY,
    "anthropic-version": "2023-06-01",
    "content-type": "application/json",
  },
  body: JSON.stringify({
    model: "claude-fable-5-1",
    max_tokens: 1024,
    messages: [{ role: "user", content: "Refactor this function for O(n) time and explain the change." }],
  }),
});
console.log((await res.json()).content[0].text);