Reasoning & Extended Thinking

const agent = new Agent({
  name: 'Math Tutor',
  instructions: 'Solve problems step by step.',
  model: anthropic('claude-sonnet-4-6'),
  modelConfig: {
    thinking: { type: 'enabled', budgetTokens: 10000 }
  }
});

const result = await agent.process({ message: 'What is 17! / 15!?' });
console.log(result.message); // "272"

// Thinking content available in traces (Portal > Executions)

const agent = new Agent({
  name: 'Analyst',
  instructions: 'Analyze data carefully.',
  model: openai('o4-mini'),
});

const agent = new Agent({
  name: 'Coder',
  instructions: 'Write clean code.',
  model: gemini('gemini-2.5-flash'),
  modelConfig: {
    thinking: { type: 'enabled', budgetTokens: 2048 }
  }
});

const agent = new Agent({
  name: 'Researcher',
  instructions: 'Research thoroughly.',
  model: xai('grok-4-1-fast-reasoning'),
});

const stream = await agent.processStream({ message: 'Solve this equation...' });

for await (const chunk of stream) {
  if (chunk.type === 'thinking') {
    console.log('[Thinking]', chunk.data.content);
  } else if (chunk.type === 'content') {
    process.stdout.write(chunk.data.content);
  }
}

const thinker = LLM.anthropic('claude-sonnet-4-6', {
  thinking: { type: 'enabled', budgetTokens: 8000 }
});

const result = await thinker.generate('Solve: if 2x + 5 = 17, what is x?');
console.log(result.text);      // "x = 6"
console.log(result.thinking);  // "Let me solve step by step: 2x + 5 = 17, 2x = 12, x = 6"