Added chatgpt temperature environment variable (#162)

* added chatgpt temperature enviroment variable

* accidentally use float instead of number

* fixed inline

* Updated the readme

* Updated the env example

---------

Co-authored-by: D <>

.env.example

@@ -13,6 +13,8 @@ CHATGPT_API_MODEL=gpt-3.5-turbo
 #CHATGPT_IGNORE_MEDIA=false
 # (Optional) You can change the api url to use another (OpenAI-compatible) API endpoint
 #CHATGPT_REVERSE_PROXY=https://api.openai.com/v1/chat/completions
+# (Optional) Set the temperature of the model. 0.0 is deterministic, 1.0 is very creative.
+# CHATGPT_TEMPERATURE=0.8
 
 # Set data store settings
 KEYV_BACKEND=file

README.md

@@ -162,6 +162,16 @@ Once the bot has started succesfully, it will output the following information t
 ## I use Docker but I don't see any console output
 You most likely need to view the logs by running `docker logs matrix-chatgpt-bot`
 
+## How to set the temperature
+Set the temperature by using CHATGPT_TEMPERATURE in your .env file. The default is 0.8.
+
+Here are some guidelines for setting the temperature:
+
+| Temperature Values | Appropriate Tasks | Examples |
+| --- | --- | --- |
+| Below 0.5 (low) | Tasks requiring a single correct answer or predictable output | Programming |
+| 0.5-0.9 (medium) | Tasks needing somewhat varied and creative content grounded in reality | E-mail response |
+| Above 0.9 (high) | Tasks requiring more creative and unpredictable output | Story writing |
 
 # Reporting issues
 

src/env.ts

@@ -36,6 +36,7 @@ export const {
   CHATGPT_PROMPT_PREFIX,
   CHATGPT_IGNORE_MEDIA,
   CHATGPT_REVERSE_PROXY,
+  CHATGPT_TEMPERATURE,
 } = parseEnv(process.env, {
   DATA_PATH:                   { schema: z.string().default("./storage"),          description: "Set to /storage/ if using docker, ./storage if running without" },
   KEYV_BACKEND:                { schema: z.enum(["file", "other"]).default("file"),description: "Set the Keyv backend to 'file' or 'other' if other set KEYV_URL" },
@@ -68,5 +69,6 @@ export const {
   CHATGPT_API_MODEL:           { schema: z.string().default(""),                   description: "The model for the ChatGPT-API to use. Keep in mind that these models will charge your OpenAI account depending on their pricing." },
   CHATGPT_PROMPT_PREFIX:       { schema: z.string().default('Instructions:\nYou are ChatGPT, a large language model trained by OpenAI.'), description: "Instructions to feed to ChatGPT on startup"},
   CHATGPT_IGNORE_MEDIA:        { schema: z.boolean().default(false),               description: "Wether or not the bot should react to non-text messages"},
-  CHATGPT_REVERSE_PROXY:       { schema: z.string().default(""),                   description: "Change the api url to use another (OpenAI-compatible) API endpoint" }
+  CHATGPT_REVERSE_PROXY:       { schema: z.string().default(""),                   description: "Change the api url to use another (OpenAI-compatible) API endpoint" },
+  CHATGPT_TEMPERATURE:         { schema: z.number().default(0.8),                  description: "Set the temperature for the model" }
 });

src/index.ts

@@ -11,7 +11,7 @@ import {
   DATA_PATH, KEYV_URL, OPENAI_API_KEY, MATRIX_HOMESERVER_URL, MATRIX_ACCESS_TOKEN, MATRIX_AUTOJOIN,
   MATRIX_BOT_PASSWORD, MATRIX_BOT_USERNAME, MATRIX_ENCRYPTION, MATRIX_THREADS, CHATGPT_CONTEXT,
   CHATGPT_API_MODEL, KEYV_BOT_STORAGE, KEYV_BACKEND, CHATGPT_PROMPT_PREFIX, MATRIX_WELCOME,
-  CHATGPT_REVERSE_PROXY
+  CHATGPT_REVERSE_PROXY, CHATGPT_TEMPERATURE
   } from './env.js'
 import CommandHandler from "./handlers.js"
 import { KeyvStorageProvider } from './storage.js'
@@ -60,6 +60,7 @@ async function main() {
   const clientOptions = {  // (Optional) Parameters as described in https://platform.openai.com/docs/api-reference/completions
     modelOptions: {
       model: CHATGPT_API_MODEL,  // The model is set to gpt-3.5-turbo by default
+      temperature: CHATGPT_TEMPERATURE,
     },
     promptPrefix: wrapPrompt(CHATGPT_PROMPT_PREFIX),
     debug: false,