community: update finetuned model cost for 4o-mini (#24605)

- **Description:** adds model price for. reference:
https://openai.com/api/pricing/
- **Issue:** -
- **Dependencies:** -
- **Twitter handle:** cureef

libs/community/langchain_community/callbacks/openai_info.py

@@ -100,12 +100,14 @@ MODEL_COST_PER_1K_TOKENS = {
     "gpt-3.5-turbo-0613-finetuned": 0.003,
     "gpt-3.5-turbo-1106-finetuned": 0.003,
     "gpt-3.5-turbo-0125-finetuned": 0.003,
+    "gpt-4o-mini-2024-07-18-finetuned": 0.0003,
     # Fine Tuned output
     "babbage-002-finetuned-completion": 0.0016,
     "davinci-002-finetuned-completion": 0.012,
     "gpt-3.5-turbo-0613-finetuned-completion": 0.006,
     "gpt-3.5-turbo-1106-finetuned-completion": 0.006,
     "gpt-3.5-turbo-0125-finetuned-completion": 0.006,
+    "gpt-4o-mini-2024-07-18-finetuned-completion": 0.0012,
     # Azure Fine Tuned input
     "babbage-002-azure-finetuned": 0.0004,
     "davinci-002-azure-finetuned": 0.002,