OpenAI: GPT-3.5 Turbo

GPT-3.5 Turbo is a text model from OpenAI, identified on api14 as openai/gpt-3.5-turbo. OpenAI describes it as its fastest model, and it was released by the provider on 2023-05-28. It sits in the text category and is built to understand and generate natural language or code, with optimisation for chat and traditional completion tasks. If you are choosing a general purpose OpenAI model for everyday text work, this is the long standing default that much of the ecosystem was built around.

The model accepts text as input and returns text as output, so there is no image, audio or file handling to plan for. Its context window is 16,385 tokens, and the maximum output is 4,096 tokens, which means long inputs are possible but the reply itself is capped well below the context size. The knowledge cutoff is 2021-09-30, so anything after that date has to come from the prompt rather than from the model's training data. Supported request parameters include temperature, top_p, max_tokens, stop, frequency_penalty, presence_penalty, logit_bias, logprobs, top_logprobs, seed, response_format, structured_outputs, tools and tool_choice.

Those capabilities map onto a fairly wide set of practical jobs. Chat assistants, drafting and rewriting, summarisation of documents that fit inside the context window, classification and extraction into a fixed shape, and code generation or explanation are all reasonable fits, since the model handles both natural language and code. Because tools and tool_choice are supported, you can define function schemas and let the model decide when to call them, which suits agent style workflows and retrieval pipelines where the model needs to request data. The seed parameter helps when you want repeatable sampling, and response_format plus structured_outputs are useful when a downstream parser expects a predictable structure rather than free prose.

Calling it through api14 works the same way as any other OpenAI-compatible endpoint. Send your request to the chat completions route with the model id openai/gpt-3.5-turbo, and use the parameters listed above in the request body as needed. If you already have code written against the OpenAI SDK or a compatible client, pointing the base URL at api14 and swapping the model id is normally the only change required.

Two constraints are worth keeping in mind before you commit. The 2021-09-30 knowledge cutoff means the model will not know about recent events, libraries or APIs unless you supply that context, and the 4,096 token output ceiling limits how much it can produce in a single response. For very large inputs, very long generations, or tasks that depend on recent knowledge, a different model on api14 may serve you better.