You can proxy requests to xAI AI models through AI Gateway by creating AI Model Provider and AI Model entities. This reference documents all supported AI capabilities, configuration requirements, and provider-specific details needed for proper integration.
xAI provider
Upstream paths
AI Gateway automatically routes requests to the appropriate xAI API endpoints. The following table shows the upstream paths used for each capability.
|
Capability |
Path template |
Description |
Upstream path or API |
|---|---|---|---|
| Generate |
/chat/completions, /completions, or /responses
|
Text generation for chat completions and responses |
/v1/chat/completions
|
| Agentic |
/assistants or /responses
|
Agent and assistant-based interactions |
/v1/responses
|
| Image |
/images/generations or /images/edits
|
Image generation and editing |
/v1/images/generations
|
Supported capabilities
The following tables show the AI capabilities supported by the xAI provider when configuring AI Models.
By default, AI Gateway uses the path templates shown in the tables below (e.g.,
/chat/completions,/embeddings, etc.). To customize these paths, configure theconfig.pathsfield in your AI Model entity. Custom paths take the form{configured_path}/{template_path}— for example, if you set a custom path of/v2, requests to/embeddingswould be routed to/v2/embeddings.
Text generation
Support for xAI text generation capabilities:
|
Capability |
Streaming |
Model example |
Path template |
Min version |
|---|---|---|---|---|
| generate | Not supported | grok-3 |
/chat/completions, /completions, or /responses
|
2.0 |
Agentic
Support for xAI agent and assistant capabilities:
|
Capability |
Model example |
Path template |
Min version |
|---|---|---|---|
| agentic | grok-3 |
/assistants or /responses
|
2.0 |
Image
Support for xAI image generation and editing capabilities:
|
Capability |
Model example |
Path template |
Min version |
|---|---|---|---|
| image | grok-2-image |
/images/generations or /images/edits
|
2.0 |
For requests with large payloads, consider increasing
config.max_request_body_sizeon your AI Model entity to three times the raw binary size.Supported image sizes and formats vary by model. Refer to your provider’s documentation for allowed dimensions and requirements.
xAI base URL
The base URL is https://api.x.ai:443/{capability_path}. The {capability_path} is determined by the AI capability.
AI Gateway uses this URL automatically. You only need to configure a URL if you’re using a self-hosted or xAI-compatible endpoint, in which case set the upstream_url option in your AI Model configuration.
Configure xAI
To use xAI with AI Gateway, configure a new AI Model Provider. You can then access supported AI Models from xAI.
Here’s a minimal configuration for chat completions: