GPT-3.5 Turbo

About GPT-3.5 Turbo

GPT-3.5 Turbo is OpenAI's fast, affordable model that powered the original ChatGPT and revolutionized conversational AI. With response times under a second and pricing at just $0.50 per million input tokens, it remains one of the most cost-effective options for high-volume applications. The model features a 16K context window and excels at general conversation, content generation, summarization, and basic coding tasks. GPT-3.5 Turbo supports function calling, JSON mode, and fine-tuning, making it highly customizable for specific use cases. While it doesn't match GPT-4's reasoning capabilities, it handles straightforward tasks efficiently and reliably. The model is ideal for chatbots, customer support automation, content drafts, and applications where speed and cost matter more than maximum capability. Many production systems continue to use GPT-3.5 Turbo for initial processing, escalating to more powerful models only when needed. For developers building their first AI applications or optimizing costs in high-volume scenarios, GPT-3.5 Turbo provides an excellent entry point with proven reliability and extensive documentation.

Model Specifications

💰 Real-World Cost Examples

Estimated monthly costs for common use cases

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🚀 Quick Start

Get started with GPT-3.5 Turbo API

from openai import OpenAI
client = OpenAI()

response = client.chat.completions.create(
    model="openai/gpt-3.5-turbo",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(response.choices[0].message.content)

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