Feature: Work with new o1 models

R/chatgpt-package.R

@@ -9,3 +9,6 @@
 assign("chat_session_messages", list(), envir = .state)
 
 api_url <- Sys.getenv("OPENAI_API_URL", "https://api.openai.com/v1")
+
+# GPT Models that doesn't allow the `system` parameter in messages.
+systemless_models <- c("o1-mini", "o1-preview")

R/get_chat_session.R

@@ -4,6 +4,9 @@
 #'
 get_chat_session <- function(session_id = "1") {
   default_session <- list(list(role = "system", content = "You are a helpful assistant."))
+  if (Sys.getenv("OPENAI_MODEL") %in% systemless_models) {
+    default_session <- list()
+  }
   if (is.null(session_id)) {
     return(default_session)
   }

R/gpt_get_completions.R

@@ -22,14 +22,19 @@ gpt_get_completions <- function(prompt, openai_api_key = Sys.getenv("OPENAI_API_
     presence_penalty = as.numeric(Sys.getenv("OPENAI_PRESENCE_PENALTY", 0)),
     logprobs = as.logical(Sys.getenv("OPENAI_LOGPROBS", FALSE))
   )
+  # These GPT models use different parameters.
+  if (Sys.getenv("OPENAI_MODEL") %in% systemless_models) {
+    params$max_completion_tokens <- params$max_tokens
+    params$max_tokens <- NULL
+  }
   if (get_verbosity()) {
     message(paste0("\n*** ChatGPT input:\n\n", prompt, "\n"))
   }
   return_language <- Sys.getenv("OPENAI_RETURN_LANGUAGE")
   if (nchar(return_language) > 0) {
     return_language <- paste0("You return all your replies in ", return_language, ".")
   }
-  if (is.null(messages)) {
+  if (is.null(messages) && Sys.getenv("OPENAI_MODEL") %in% systemless_models) {
     messages <- list(
       list(
         role = "system",
@@ -42,11 +47,13 @@ gpt_get_completions <- function(prompt, openai_api_key = Sys.getenv("OPENAI_API_
     )
   } else {
     # If there are messages provided, then add the `return_language` if available.
-    messages[[which(sapply(messages, function(message) message$role == "system"))]]$content <-
-      paste(
-        messages[[which(sapply(messages, function(message) message$role == "system"))]]$content,
-        return_language
+    system_msg_index <- which(sapply(messages, function(message) message$role == "system"))
+    if (length(system_msg_index) == 1) {
+      # If this GPT model has `system` parameter, assign the language to it.
+      messages[[system_msg_index]]$content <- paste(
+        messages[[system_msg_index]]$content, return_language
       )
+    }
   }
   # Get the proxy to use, if provided.
   proxy <- NULL

R/reset_chat_session.R

@@ -15,9 +15,12 @@ reset_chat_session <- function(system_role = "You are a helpful assistant.", ses
   if (is.list(system_role)) {
     # If `system_role` is a list, then it is a ChatGPT session object.
     session <- system_role
-  } else {
+  } else if (!Sys.getenv("OPENAI_MODEL") %in% systemless_models) {
     # Otherwise, it's a string specifying ChatGPT's role.
     session <- list(list(role = "system", content = system_role))
+  } else {
+    warning("Couldn't assign default session to this GPT model.")
+    session <- list()
   }
   all_sessions <- get("chat_session_messages", envir = .state)
   all_sessions[[as.character(session_id)]] <- session