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Configures generic LLMReasoning through WithLLMSampling and streams the run to observe thinking output (e.g. Anthropic extended thinking). Source: examples/agent_with_reasoning/

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What it demonstrates

  • WithLLMSampling with Reasoning: &interfaces.LLMReasoning{...}
  • Provider-specific mapping of Enabled, Effort, BudgetTokens
  • Streaming reasoning-related events

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Run

From examples/: 
go run ./agent_with_reasoning
go run ./agent_with_reasoning "Why is the sky blue? One short paragraph."
Use a model that supports extended thinking for your provider — for example claude-sonnet-4-20250514 with Anthropic, or o3 with OpenAI.

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Expected output

With Anthropic extended thinking enabled you will see thinking deltas on stderr (or as events) followed by the final answer: 
[thinking] The blue color of the sky is due to a phenomenon called Rayleigh scattering...
The sky appears blue because of Rayleigh scattering — shorter blue wavelengths scatter
more than longer red ones as sunlight passes through the atmosphere.
Thinking content appears only when the provider emits it; output format varies by provider.

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Learn more

Reasoning

Field mapping per provider

Stream

Streaming event handling