You can now override default LLMs directly in your Autonomous Node’s settings.This method is simpler and recommended for most use cases. The guide below remains available for advanced use cases.
You can configure Autonomous Nodes to use a different LLM than the default model specified in your Bot Settings. This is useful if your bot needs a higher-performing model for certain tasks.
You will need:

​
Step 1: Find the Node, Workflow and model IDs

First, you need to find:
  • The ID of the Autonomous Node whose model you want to change
  • The ID of the Workflow containing that Autonomous Node
  • The ID of the model you want to change to

​
Node and Workflow IDs

  1. Start a conversation with your bot in the Emulator.
  2. Continue until the bot transitions to the Autonomous Node whose model you want to change:
Transition to new Autonomous Node
  1. Select one of your messages from after the bot transitioned to the new Autonomous Node. Then, open the JSON tab in the bottom panel.
  2. Under Payload, navigate to state > context:
Current Workflow and Node IDs
  1. Copy the values of currentFlow and currentNode—these are your Workflow’s ID and Autonomous Node’s ID.

​
Model ID

  1. Return to your conversation in the Emulator.
  2. Select Inspect on any message generated by the Autonomous Node whose model you want to change.
  3. Select View Raw in the upper-right corner.
  4. Navigate to context > options > models.
  5. Find the model you want to switch to. Expand it, then copy its full id. For example, for GPT-4.1:
GPT 4.1

​
Step 2: Add a Hook to change models

  1. In the Studio, navigate to the Hooks section.
  2. Select Create Hook and set its type to Before LLMz Execution.
  3. Paste the following code into the Hook:
// Get the current Workflow and Node IDs
const flowID = event?.state?.context?.currentFlow ?? ''
const nodeID = event?.state?.context?.currentNode ?? ''

// Check if they match the ones we're targeting
const flowMatches = (flowID.includes('yourWorkflowID')) // Replace with your own
const nodeMatches = (nodeID.includes('yourNodeID')) // Replace with your own

console.log('Current model: ', context.model)
console.log('Current Workflow: ', flowID.toUpperCase())
console.log('Current Node: ', nodeID.toUpperCase())

// Switch models if they match
if (flowMatches && nodeMatches) {
  context.model = 'yourModelChoice' // Replace with your desired model
  console.log('Switched to ', context.model)
}
Now, this Autonomous Node will use a different model than the default model specified in your Bot Settings.

​
Troubleshooting

Here are some troubleshooting tips:

​
State is undefined

If the state property from Step 1 is undefined, make sure you’re viewing your own message’s logs—not the Autonomous Node’s.

​
Check if IDs matched

You can check if the Node and Workflow IDs matched by checking your bot’s logs after transitioning to the Autonomous Node in the Emulator:
Model change logs

​
Check if model actually changed

To check if the model actually changed:
  1. Select Inspect on any response from the target Autonomous Node.
  2. Select View Raw in the upper-right corner.
  3. Navigate to context > options > model. This will display model the Autonomous Node used for the response.