Bug Description

When I use Grok-3 Modal, it will report an error as "Argument not supported on this model: presencePenalty".

To Reproduce

Ccreate a X-AI Grok Chat Node. Then trigger it.

Expected behavior

No error report and correct response sent

Operating System

Ubuntu 18

n8n Version

1.86.1

Node.js Version

N8n Docker version

Database

SQLite (default)

Execution mode

main (default)