Helicone

Helicone AI Gateway API

The Helicone AI Gateway API provides OpenAI-compatible endpoints for routing requests to 100+ AI models across providers including OpenAI, Anthropic, Google, Groq, and more. It offers a unified API with automatic provider fallbacks, zero markup pricing, built-in observability, intelligent routing, prompt caching, error handling, and image generation support.

GitHub OpenAPI

Documentation

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Documentation
https://docs.helicone.ai/gateway/overview
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APIReference
https://docs.helicone.ai/rest/ai-gateway/post-v1-chat-completions
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GettingStarted
https://docs.helicone.ai/getting-started/quick-start

Specifications

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OpenAPI
https://docs.helicone.ai/ai-gateway.openapi.json

Other Resources

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ProviderRouting
https://docs.helicone.ai/gateway/provider-routing
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Models
https://www.helicone.ai/models

OpenAPI Specification

ai-gateway.openapi.json Raw ↑