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Overview
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Latest: GPT-5.4
Prompt guidance

Core concepts

Text generation
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API Reference
API Reference
Responses API
Webhooks
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Platform APIs
- Audio
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- Embeddings
  - Create an embedding
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  - Jobs
    Create a job
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    List checkpoints
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    Create a permission
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- Moderations
  - Create a moderation
Vector Stores
- Vector Stores
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  - Create a session
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- Client Secrets
  - Create a client secret
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Administration
- Overview
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  - Audit Logs
    Get Costs
    List audit logs
    Admin API Keys
    Create an admin API key
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    Usage
    Get Audio Speeches
    Get Audio Transcriptions
    Get Code Interpreter Sessions
    Get Completions
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    Get Images
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    Get Vector Stores
  - Invites
    Create an invite
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  - Users
    Retrieve an user
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    Create a role
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  - Groups
    Create a group
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    Create an user
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    Create a role
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  - Roles
    Create a role
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  - Certificates
    Create a certificate
    Retrieve a certificate
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    Activate
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  - Projects
    Create a project
    Retrieve a project
    Update a project
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    Create an user
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    Create a service account
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    Retrieve an API key
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    Update Rate Limit
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    Create a group
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    List certificates
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- Projects
  - Roles
    Create a role
    Update a role
    Delete a role
    List roles
  - Groups
    Roles
    Create a role
    Delete a role
    List roles
  - Users
    Roles
    Create a role
    Delete a role
    List roles
Chat Completions
- Chat Completions
Legacy
- Realtime Beta
  - Overview
  - Sessions
    Create a session
  - Transcription Sessions
    Create a transcription session
- Assistants
- Completions
  - Create a completion
- Completions

Transcription Sessions

Create transcription session

Deprecated

POST/realtime/transcription_sessions