Recently, OpenAI just released the ability to use ChatGPT using their API.
This topic discusses my implementation of a the new chatgpt AI in Roblox using OpenAI’s API.
Requirements:
Account on Open AI
Open AI, API key (Google how to get one)
Basic Luau and Roblox API knowledge
The Tutorial is below. More information is in the comments of the script. Tutorial:
local url = "https://api.openai.com/v1/chat/completions" -- Sets the URL of the OpenAI API endpoint to request from
local headers = { -- Sets the authentication header for the API request. The API-KEY should be replaced with an actual OpenAI API key
["Authorization"] = "Bearer API-KEY",
}
local body = HTTP:JSONEncode({ -- Constructs the request body to be sent to the API. It contains the model name and a list of messages
model = "gpt-3.5-turbo",
messages = {{
role = "user",
content = "your message" -- The text message to be sent to the OpenAI API for generating the response
}}
})
local response = HTTP:PostAsync(url, body, Enum.HttpContentType.ApplicationJson, nil, headers) -- Sends a POST request to the OpenAI API endpoint with the request body and authentication header, and receives the API response. Don't change this if you don't know what you are doing.
local decoded = HTTP:JSONDecode(response) -- Decodes the JSON response from the OpenAI API into a Lua table
-- you can print decoded and look at everything openAI sends you. It's a huge table with a ton of information.
local message = decoded["choices"][1]["message"]["content"] -- Extracts the generated text response from the decoded JSON response and assigns it to the `message` variable.
To get the bearer-api-key, you need to create an account on OpenAI and then create an API key. Once you have an API key, you can use it as the bearer token in the header of your HTTP request. To get an API key, you can go to the OpenAI dashboard, click on the “API Keys” tab, and then click on the “Create new API Key” button. Follow the instructions to create a new API key, and then copy the value of the key to use as the bearer token in your API requests.
As you can’t really trust custom contents made by anything other than the game, I must say that filtering is still a required thing. Also any external requests such as HTTP requests (and FilterString too) should be wrapped in pcall for both safety and error diagnosis.
local HTTP = game:GetService("HttpService")
local textSrv = game:GetService("TextService")
local url = "https://api.openai.com/v1/chat/completions" -- Sets the URL of the OpenAI API endpoint to request from
local headers = { -- Sets the authentication header for the API request. The API-KEY should be replaced with an actual OpenAI API key
["Authorization"] = "Bearer API-KEY",
}
local body = HTTP:JSONEncode({ -- Constructs the request body to be sent to the API. It contains the model name and a list of messages
model = "gpt-3.5-turbo",
messages = {{
role = "user",
content = "your message" -- The text message to be sent to the OpenAI API for generating the response
}}
})
local sa, response = pcall(function()
return HTTP:PostAsync(url, body, Enum.HttpContentType.ApplicationJson, nil, headers)
end) -- Sends a POST request to the OpenAI API endpoint with the request body and authentication header, and receives the API response. Don't change this if you don't know what you are doing.
if not sa then
warn("Error when fetching a response message: "..response)
end
local decoded = HTTP:JSONDecode(response) -- Decodes the JSON response from the OpenAI API into a Lua table
-- you can print decoded and look at everything openAI sends you. It's a huge table with a ton of information.
local message = decoded["choices"][1]["message"]["content"] -- Extracts the generated text response from the decoded JSON response and assigns it to the `message` variable.
local sb, filteredMessage = pcall(function() -- Filters the generated text response for Roblox ToS compliance
return textSrv:FilterStringAsync(tostring(message), game.CreatorId):GetNonChatStringForBroadcastAsync()
end)
if sb then
text.Text = filteredMessage
else
warn("Error when filtering response message: "..filteredMessage)
text.Text = "####"
end
sorry im a bit late, but do you put this in a localscript or just a normal script or serverscriptservice or what? im not very good at scripting, i can only design very very basic stuff so this is wayyy over my head
for everyone getting the “Too Many Requests”. ChatGPT gives certain users a free trial of API usage. Mine was $15, but it expires after a few months. New accounts don’t get this until after a certain period of time. You’ll have to pay around $1 for every ~40 thousand messages. So if you get that error just check your usage and free credit here: OpenAI API
