Supported Providers and Models

The Ekai Gateway supports multiple providers and automatically routes requests to the correct one based on model name and request type. Models are grouped by the API format they support: Chat Completions (OpenAI-compatible) and Messages (Anthropic-compatible).

Chat Completions Providers

These models are compatible with the /v1/chat/completions endpoint and use the OpenAI-style API format.

Provider
Models
Base URL
Auth Env Var

OpenAI

gpt-5, gpt-5-mini, gpt-5-nano, gpt-5-chat-latest, gpt-5-codex, gpt-4.1, gpt-4.1-mini, gpt-4.1-nano, gpt-4o, gpt-4o-2024-05-13, gpt-4o-mini, gpt-4o-mini-4k, gpt-4o-mini-8k, gpt-realtime, gpt-4o-realtime-preview, gpt-4o-mini-realtime-preview, o1, o1-pro, o3-pro, o3, o3-deep-research, o4-mini, o4-mini-deep-research, o3-mini, o1-mini, codex-mini-latest, gpt-4o-mini-search-preview, gpt-4o-search-preview, computer-use-preview, gpt-image-1, gpt-3.5-turbo, chatgpt-4o-latest, gpt-4-turbo-2024-04-09, gpt-4-0125-preview, gpt-4-1106-preview, gpt-4-1106-vision-preview, gpt-4-0613, gpt-4-0314, gpt-4-32k, gpt-3.5-turbo-0125, gpt-3.5-turbo-1106, gpt-3.5-turbo-0613, gpt-3.5-0301, gpt-3.5-turbo-instruct, gpt-3.5-turbo-16k-0613

https://api.openai.com/v1/chat/completions

OPENAI_API_KEY

Google (Gemini)

gemini-2.5-pro, gemini-2.5-flash, gemini-2.5-flash-lite, gemini-3.0-pro-preview

https://generativelanguage.googleapis.com/v1beta/openai/chat/completions

GOOGLE_API_KEY

xAI

grok-4, grok-3, grok-3-mini, grok-code-fast-1, grok-code-fast, grok-code-fast-1-0825

https://api.x.ai/v1/chat/completions

XAI_API_KEY

OpenRouter

Any provider/model slug supported by OpenRouter (e.g., openai/gpt-5). See the OpenRouter catalog for the full list of current slugs.

https://openrouter.ai/api/v1/chat/completions

OPENROUTER_API_KEY

All chat completion providers follow the OpenAI schema and support tools or clients that expect an OpenAI-compatible interface.

Messages Providers

These models are compatible with the /v1/messages endpoint and use the Anthropic-style API format.

Provider
Models
Base URL
Auth Env Var

Anthropic

claude-3-5-sonnet, claude-3-5-sonnet-latest, claude-3-5-haiku, claude-3-5-haiku-latest, claude-3-haiku, claude-3-opus, claude-3-sonnet, claude-opus-4.1, claude-sonnet-4

https://api.anthropic.com/v1/messages

ANTHROPIC_API_KEY

xAI

grok-code-fast-1, grok-1, grok-2, grok-4-0709, grok-vision-beta

https://api.x.ai/v1/messages

XAI_API_KEY

ZAI

glm-4.6, glm-4.5, glm-4.5-air, glm-4.5-x, glm-4.5-airx, glm-4.5-flash, glm-4-32b-0414-128k

https://api.z.ai/api/anthropic/v1/messages

ZAI_API_KEY

All message providers support the Anthropic message format and can be used interchangeably with clients like Claude Code or Claude Desktop.

Format Overview

Format
Endpoint
Typical Clients
Compatible Providers

OpenAI-style (Chat Completions)

/v1/chat/completions

Codex, OpenRouter, local SDKs

OpenAI, xAI, OpenRouter

Anthropic-style (Messages)

/v1/messages

Claude Code, Claude Desktop

Anthropic, xAI, ZAI

Routing Behavior

  • Requests are dispatched based on the model name.

  • The Gateway looks up the model in its catalog and automatically maps it to the correct provider and endpoint type.

  • If multiple providers host the same model, the Gateway selects the cheapest available provider.

  • Failed requests automatically fall back to secondary providers where possible.

  • All routing decisions are logged in the Dashboard under “Provider Usage”.

Example Model Usage

Chat Completions (OpenAI format):

Messages (Anthropic format):

Summary

  • Chat Completions: OpenAI-style interface (/v1/chat/completions) for OpenAI, xAI, and OpenRouter.

  • Messages: Anthropic-style interface (/v1/messages) for Anthropic, xAI, and ZAI.

  • Unified Gateway: One endpoint, one configuration, and full visibility of all providers in the Dashboard.

Ekai’s model catalog is continuously updated to include the newest models as they become available.

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