GPT 3.5

ChatGPT 3.5 is an instruction-tuned successor to InstructGPT, optimized for multi-turn dialogue so it can follow plain prompts, remember context within a session, and respond in a cooperative tone. It drafts emails and posts, summarizes documents, answers questions, and provides basic code help in languages like Python and JavaScript. Compared with later GPT-4 class models it is quicker and cheaper, which makes it a solid default for high-traffic assistants, support bots, and content workflows where latency and cost matter more than frontier accuracy. Limits include shallower multi-step reasoning, shorter effective context, and occasional factual slips, so teams often pair 3.5 with retrieval or route the hardest tasks to a larger model while keeping 3.5 as the fast, reliable workhorse.