chat: Chat with an LLM

In llm.api: Minimal LLM Chat Interface

Chat with an LLM

Description

Send a message to a Large Language Model and get a response.

Usage

chat(prompt, model = NULL, system = NULL, history = NULL, temperature = NULL,
     max_tokens = NULL,
     provider = c("auto", "openai", "anthropic", "moonshot", "ollama"),
     stream = FALSE, ...)

Arguments

prompt	Character. The user message to send.
model	Character. Model name (e.g., "gpt-4o", "claude-3-5-sonnet-latest", "llama3.2").
system	Character or NULL. System prompt to set context.
history	List or NULL. Previous conversation turns.
temperature	Numeric or NULL. Sampling temperature (0-2).
max_tokens	Integer or NULL. Maximum tokens in response.
provider	Character. Provider: "auto", "openai", "anthropic", "moonshot", or "ollama".
stream	Logical. Stream the response (prints as it arrives).
...	Additional parameters passed to the API.

Value

A list with:

content	The assistant's response text
model	Model used
usage	Token usage (if available)
history	Updated conversation history

Examples

## Not run: 
# Simple chat
chat("What is 2+2?")

# With system prompt
chat("Explain R", system = "You are a helpful programming tutor.")

# Continue conversation
result <- chat("Hello")
chat("Tell me more", history = result$history)

## End(Not run)

llm.api documentation built on April 16, 2026, 5:08 p.m.