diff --git a/.env.example b/.env.example
index a16d275f..977f7ad7 100644
--- a/.env.example
+++ b/.env.example
@@ -45,4 +45,5 @@ ALLOWED_TELEGRAM_USER_IDS=USER_ID_1,USER_ID_2
 # IGNORE_GROUP_TRANSCRIPTIONS=true
 # TTS_MODEL="tts-1"
 # TTS_VOICE="alloy"
+# TTS_PRICES=0.015,0.030
 # BOT_LANGUAGE=en
\ No newline at end of file
diff --git a/README.md b/README.md
index e6ce2e9d..c1479b2f 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,7 @@ The following parameters are optional and can be set in the `.env` file:
 | `TOKEN_PRICE`         | $-price per 1000 tokens used to compute cost information in usage statistics. Source: https://openai.com/pricing                                                                                                                                                                                                                                                                          | `0.002`            |
 | `IMAGE_PRICES`        | A comma-separated list with 3 elements of prices for the different image sizes: `256x256`, `512x512` and `1024x1024`. Source: https://openai.com/pricing                                                                                                                                                                                                                                  | `0.016,0.018,0.02` |
 | `TRANSCRIPTION_PRICE` | USD-price for one minute of audio transcription. Source: https://openai.com/pricing                                                                                                                                                                                                                                                                                                       | `0.006`            |
+| `TTS_PRICES`          | A comma-separated list with prices for the tts models: `tts-1`, `tts-1-hd`. Source: https://openai.com/pricing                                                                                                                                                                                                                                                                            | `0.015,0.030`      |
 
 Check out the [Budget Manual](https://github.com/n3d1117/chatgpt-telegram-bot/discussions/184) for possible budget configurations.