| Provider | No | Select which LLM provider to use. The credential is resolved from the matching App Management connection (per-canvas default or per-node override). |
| Model Tier | No | Choose the model tier based on task complexity. Fast is good for simple tasks, Powerful for complex reasoning. |
| Task Preset | No | Select a preset to use an optimized system prompt for common tasks, or choose Custom to write your own. |
| System Prompt | No | Custom instructions for the AI. Only used when Task Preset is set to Custom. |
| User Message | Yes | The main prompt or question for the AI. Reference upstream data using template syntax. |
| Context Data | No | Data from upstream nodes to include in the prompt. Will be serialized and appended to the user message. |