Openai is excited to announce that fine-tuning capabilities are now accessible for GPT-3.5 Turbo, with plans for GPT-4 fine-tuning in the upcoming fall season. This upgrade empowers developers to tailor models to their specific use cases, optimizing performance and implementing these customized models on a large scale. Preliminary assessments have demonstrated that a fine-tuned iteration of GPT-3.5 Turbo can rival, and in certain specific tasks, even surpass the capabilities of the base GPT-4 model. It’s important to note that data processed through the fine-tuning API remains the customer’s exclusive property and is not utilized by OpenAI or any other entity to train other models.
Fine-tuning for GPT-3.5 Turbo is now available. This means that developers can customize the model to make it better for their specific needs. Early tests have shown that a fine-tuned version of GPT-3.5 Turbo can even outperform the base GPT-4 model on certain tasks.
Benefits of Fine-Tuning
Since the launch of GPT-3.5 Turbo, there has been a growing demand from developers and enterprises for the ability to adapt the model to create distinctive and specialized user experiences. With this latest release, developers now have the option to engage in supervised fine-tuning to optimize the model’s performance for their specific applications. Fine-tuning is most powerful when combined with other techniques, such as prompt engineering, information retrieval, and function calling.
During the Openai private beta phase, fine-tuning participants have witnessed substantial enhancements in model performance across various common scenarios, including:
- Enhanced Precision: Fine-tuning empowers businesses to fine-tune the model’s responsiveness to instructions, enabling more precise outputs like concise responses or consistently generating content in a particular language. For instance, by fine-tuning, developers can ensure the model consistently responds in German when prompted.
- Reliable Output Formatting: Fine-tuning elevates the model’s ability to consistently structure responses—a critical aspect for applications requiring consistent response formats, such as code autocompletion or crafting API calls. Developers can utilize fine-tuning to reliably convert user prompts into well-formed JSON snippets, seamlessly integrating with their own systems.
- Customized Tone: Fine-tuning presents a fantastic opportunity to refine the qualitative aspect of model output, including its tone, aligning it more closely with the brand voice of businesses. Enterprises with distinct brand voices can employ fine-tuning to ensure the model’s tone is in harmony with their established identity.
Beyond the performance boost, fine-tuning also empowers businesses to truncate their prompts while maintaining comparable performance levels. With GPT-3.5 Turbo fine-tuning, models can now accommodate up to 4k tokens—an advancement that doubles our previous fine-tuned models’ capacity. Early testers have witnessed prompt size reductions of up to 90% by incorporating fine-tuned instructions into the model. This not only accelerates API calls but also contributes to cost savings.
Fine-tuning’s potential is most pronounced with other techniques such as prompt engineering, information retrieval, and function calling. For more insights, explore our comprehensive fine-tuning guide. Furthermore, support for fine-tuning with function calling and gpt-3.5-turbo-16k will be introduced later this fall, expanding the range of possibilities even further.