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The fastest and most powerful platform for building AI products

Build transformative AI experiences powered by industry-leading models and tools.

Flagship models

GPT-4o

Our fastest and most affordable flagship model

  • Text and image input, text output

  • 128k context length

  • Input: $5 | Output: $15
    per 1M tokens

Learn more
GPT-4 Turbo

Our previous high-intelligence model

  • Text and image input, text output

  • 128k context length

  • Input: $10  | Output: $30
    per 1M tokens

Learn more(opens in a new window)
GPT-3.5 Turbo

Our fast, inexpensive model for simple tasks

  • Text input, text output

  • 16k context length

  • Input: $0.50 | Output: $1.50 
    per 1M tokens

Learn more(opens in a new window)

Tools built for AI development

Playground

Explore our models and APIs in the Playground without writing a single line of code.

ChatGPT playground interface comparison of GPT-3.5 Turbo and GPT-4 Turbo
Assistants API

Build AI assistants within your own applications that can leverage models, tools, and knowledge to do complex, multi-step tasks.

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Fine-tuning API

Customize a model’s existing knowledge and behavior for a specific task via supervised fine-tuning.

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Access an API, relational database, or vector database at the time of query. Learn more(opens in a new window)

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Describe functions and have the model intelligently choose to output a JSON object containing arguments to call one or many functions. Learn more(opens in a new window)

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Get models to run code iteratively to solve challenging code and math problems. Learn more(opens in a new window)

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Get vector representations of given inputs that can be easily consumed by models and algorithms. Learn more(opens in a new window)

Trusted by the world's most innovative organizations

Features for enterprises operating at scale

Enterprise-grade security
  • SOC 2 Type 2 compliance

  • Single sign-on (SSO)

  • Multi-factor authentication (MFA)

  • Role-based access controls

  • Data encryption at rest with AES-256 and in transit with TLS 1.2

  • Private Link to securely connect to your Azure instances

Administrative controls
  • Scope user roles and API keys to individual projects

  • Limit access to specific models within each project

  • Set billing and usage restrictions to avoid overages

  • View granular usage activity by project

Access to OpenAI expertise
  • Dedicated account team and prioritized support

  • Guidance on AI deployment and best practices from solutions architects

  • Opportunity to collaborate with researchers on building custom AI models