LLM OpenAI

Language Model from OpenAI supporting GPT-4, GPT-5, and o1 models

Category: LLMs · Plans: Trial, Starter, Pro, Premium, Enterprise · Type: OpenAILLM

Inputs#

Field	Type	Required	Default	What it does
Input	Text	No	{input}	The message to send to the LLM. Use {input} for connected step output, or {node_id.output_name} for specific outputs.
System Prompt	Text	No	You are a helpful assistant	System message to define the LLM’s role and behavior.
Model Name	Text	No	gpt-4.1	The OpenAI model to use Options: gpt-4o-mini, gpt-4.1, gpt-5, gpt-5-mini, gpt-5-nano, gpt-5.2, gpt-5.4, gpt-5.4-mini, o3, gpt-oss-120b, gpt-oss-20b, gpt-4.1-mini and 9 more
Max Tokens	Number	No	3000	Maximum tokens in the response
Temperature	Number	No	0.7	Sampling temperature (0.0-2.0)
Reasoning Effort	Text	No	none	Reasoning effort for reasoning-capable models (o3 / gpt-5). The available values depend on the selected model. Options: none, low, medium, high, xhigh, max
Include Chat History	Yes/No	No	Off	Include conversation history in the LLM context
History Message Count	Number	No	5	Number of recent messages to include
History Max Tokens	Number	No	800	Maximum tokens for chat history
Message Types	Text	No	User Messages, AI Messages	Select which message types to include in chat history Options: User Messages, AI Messages, Tool Calls
Structured Output	Yes/No	No	Off	Enable structured JSON output with a defined schema
Output Schema	table	No	—	Define output fields: name, type (string/int/float/bool/list/dict), description
Images	Text	No	—	Images to be used in the input to the model.