> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.uponai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Debug Wrong Response

> Fix agents that are not following instructions or giving unexpected responses.

<Steps>
  <Step title="Check model capability">
    If your agent isn't following instructions correctly — especially with longer or complex prompts:

    * Check if you're using a lightweight model (e.g. `gpt-4.1-mini`)
    * Switch to a more capable model like `gpt-4.1`
  </Step>

  <Step title="Review prompt structure">
    If the issue persists:

    * Check if your prompt structure is too complex
    * Follow the [Prompt Engineering Guide](/build/prompt-engineering-guide)
    * Break complex tasks into clear, sequential steps
    * Add explicit transition conditions between different steps
  </Step>
</Steps>