Developers can now bring their own data to customize GPT-3.5 Turbo for their use cases. Fine-tuning for GPT-3.5 Turbo is now available, with fine-tuning for GPT-4 coming this fall. This update gives developers the ability to customize models that perform better for their use cases and run these custom models at scale. Early tests have shown a fine-tuned version of GPT-3.5 Turbo can match, or even
![GPT-3.5 Turbo fine-tuning and API updates](https://cdn-ak-scissors.b.st-hatena.com/image/square/abb31cfb804d5baf71170c1ead464528ec356467/height=288;version=1;width=512/https%3A%2F%2Fimages.openai.com%2Fblob%2Fd8d965fd-e54c-4c9b-9d7d-b5d9910d38b2%2Fgpt-3-5-turbo-fine-tuning-and-api-updates.png%3Ftrim%3D0%252C0%252C0%252C0%26width%3D1000%26quality%3D80)