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Documentation Index

Fetch the complete documentation index at: https://docs.portkey.ai/docs/llms.txt

Use this file to discover all available pages before exploring further.

This feature is available on all Portkey plans.
The Gateway is your unified interface for multimodal models, along with chat, text, and embedding models. Using the Gateway, you can call vision, audio (text-to-speech & speech-to-text), image generation and other multimodal models from multiple providers (like OpenAI, Anthropic, Stability AI, etc.) — all using the familiar OpenAI signature.

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Explore the AI Gateway’s Multimodal capabilities below:

Vision

Image Generation

Function Calling

Speech-to-Text

Text-to-Speech

Last modified on April 28, 2026