GPT-3.5 Turbo (0613) is a model snapshot released by OpenAI on June 13, 2023. It represents a significant update to the GPT-3.5 Turbo series, specifically optimized for conversational efficiency and structural reliability. This version was introduced to provide developers with more consistent performance and serves as a fixed snapshot for production stability.
Key Capabilities
The hallmark feature of the 0613 update was the introduction of function calling. This capability allows the model to intelligently detect when an external function needs to be invoked and provide the necessary JSON-formatted arguments. This advancement allows the model to serve as an orchestration layer for interacting with APIs and external tools. Additionally, this snapshot improved the model's steerability, allowing it to adhere more strictly to instructions provided in the system message compared to previous iterations.
The model supports a context window of 4,096 tokens. As a closed-source model, its internal parameter count and training architecture remain undisclosed by OpenAI. While a 16k context variant was released simultaneously, the standard 0613 identifier specifically designates the 4k context version.