How to Use GPT-4 Turbo

GPT-4 Turbo is the latest generative AI model released by OpenAI in November 2023 as a substantial upgrade over previous GPT versions. With features like a vastly expanded context window, updated knowledge cutoff, improved functionality and cheaper pricing, developers have an incredibly powerful new tool for creating apps and solutions powered by AI.

In this guide, we’ll cover everything you need to know about accessing and utilizing GPT-4 Turbo through OpenAI’s API as a developer or creator.

An Introduction to GPT-4 Turbo

GPT-4 Turbo builds on OpenAI’s previous work with models like GPT-3 and Codex by significantly ramping up capabilities. Here’s an overview of the key improvements in GPT-4 Turbo:

  • 128k Context Window – Can process prompts equivalent to around 100 pages of text, allowing incredibly sophisticated prompt engineering.
  • Knowledge Cutoff of April 2023 – Has been trained on data across the internet up until April 2023, so it possesses very current knowledge.
  • Cheaper Pricing – Costs only $0.01 per 1000 tokens for input data, and output text is 2x cheaper at $0.03 per token.
  • Improved Functionality – Better at precisely following complex instructions and can output in formats like JSON.
  • Integration with DALL-E 3 – Can accept image inputs and text-to-speech prompts in addition to text.

This combination of expansive knowledge, strong comprehension, fluent generation across formats, and economical pricing makes GPT-4 Turbo a hugely powerful AI tool for developers.

How to Access to GPT-4 Turbo

Because GPT-4 Turbo is still in preview mode, accessing it takes a few steps. Here is what you need to do:

1. Create an OpenAI Account

Head to the OpenAI website and sign up for free. You’ll need to provide some basic personal details.

2. Get Your OpenAI API Key

Once your account is activated, you can access your secret API key in the Account Settings under “View API Keys”. This key will allow you to make API requests.

3. Follow the API Documentation

OpenAI provides full documentation on integrating with the API and using it safely. Read through this to understand parameters, limits, proper usage.

4. Pass “gpt-4-1106-preview” as the Model

Unlike the default “text-davinci-003” model, you need to specify “gpt-4-1106-preview” in API requests to access the Turbo preview specifically.

And that’s it! With your API key and the Turbo model name, you can now integrate GPT-4 Turbo into an application or try it out with test prompts.

Working With GPT-4 Turbo in the API

When calling the OpenAI API to utilize GPT-4 Turbo, there are some key parameters and limits to keep in mind:

  • The maximum tokens allowed in a single request is 4096.
  • The rate limit is 20 requests per minute, or 100 requests per day.
  • Use temperature values between 0 and 2 for optimal coherence and creativity.
  • The default output is text, but you can generate JSON by adding “response_format”: “json”
  • Image inputs are possible by passing a valid image URL to the “image” parameter.

Let’s look at a sample Python request using the OpenAI library:


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import openai openai.api_key = "YOUR_API_KEY" response = openai.Completion.create( model="gpt-4-1106-preview", prompt="Hello world", max_tokens=100, temperature=0.7 ) print(response["choices"][0]["text"])

This simple request generates a 100 token completion from GPT-4 Turbo based on the prompt “Hello world” using a temperature of 0.7.

The JSON output mode can also be tested by adding the “response_format” parameter.

Tips for Using GPT-4 Turbo Effectively

Here are some tips to use GPT-4 Turbo effectively within the current limitations:

  • Experiment with prompt engineering – The 128k context window allows very long, descriptive prompts.
  • Use higher temperatures (0.8-1.2) for more creative responses.
  • Leverage the Image API – Pass images to generate detailed captions or descriptions.
  • Chain follow-up requests – Ask a series of logical follow-up questions for very advanced conversations.
  • Output to JSON when applicable – For use cases like generating structured data.
  • Stay within API limits- Stick to 20 requests per minute and daily quotas. Consider paid tiers.
  • Provide feedback – Use the “user” parameter to associate feedback with your account to improve GPT-4.

Use Cases for GPT-4 Turbo

Here are just some of the many potential use cases enabled by GPT-4 Turbo’s upgraded capabilities:

  • Creative writing and story generation – Create blogs, fiction stories, lyrics, scripts with unique narratives and continuations.
  • Chatbots and digital assistants – Build highly conversational AI personas that answer questions fluidly across topics.
  • Data analysis and research – Generate insights and summaries from large datasets, research papers, financial reports etc.
  • Image captioning & processing – Automatically generate detailed and accurate image descriptions and alt text.
  • Code generation and autocompletion – Quickly produce code compliant with instructions and existing architecture.
  • SEO content creation – Auto-generate blog posts and landing pages with contextual keywords and topics.
  • Online marketplaces – Create product listings and descriptions customized to different niches and styles.

The possibilities are truly vast when applying GPT-4 Turbo’s advanced capabilities and low-cost pricing to real problems and opportunities.


GPT-4 Turbo represents a major leap forward in leveraging large language models to create amazingly capable applications. By following OpenAI’s access process and API guidelines, developers can start building a new generation of AI-powered solutions with this robust preview model.

As with any powerful technology, it’s important to use GPT-4 responsibly by providing proper attribution, being transparent about its limitations, and considering potential risks.

But the upgrades in knowledge, comprehension, generation quality, and integration with Dall-E 3 paint an exciting future for OpenAI’s API and AI development in general. GPT-4 Turbo provides a remarkably potent tool for enterprising devs and creators in 2023.

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