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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.

Code block overlayed on an abstract painted background.
Fine-tuning API

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

Code block overlayed on an abstract painted background.
Code block overlayed on an abstract painted background.

Access an API, relational database, or vector database at the time of query. 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