GPT-3.5 Turbo 16k

GPT-3.5 Turbo 16k is a variant of the GPT-3.5 Turbo family designed for tasks that need to keep more of a conversation or document in view at once. The defining feature is an expanded context window, roughly four times the length of the standard GPT-3.5 Turbo, which lets a single request hold about twenty pages of text. This makes the model a practical fit for longer prompts such as extended document summarization, multi-turn conversations with substantial history, or code reviews where large file excerpts need to remain in scope together.

Like other members of the GPT-3.5 family, the 16k variant works with text input and produces text output, keeping the familiar instruction-following style that the family is known for. Its training data extends through September 2021, so it reflects the world as understood at that point and may not be aware of more recent events. The larger context comes with a higher per-token cost than the base GPT-3.5 Turbo, so it is best chosen when the extra room for text genuinely improves the task rather than used by default for short exchanges.