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Opper is an AI gateway for building reliable AI integrations. Route across 200+ models with full observability, evaluations, and control — through the Opper Multimodal API or drop-in compatible endpoints for OpenAI, Anthropic, and Gemini.

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Quickstart

Get your API key, pick an API, and make your first call in minutes

Models

Explore 200+ supported models across all major providers

API Reference

Complete API documentation with endpoints, parameters, and examples

Integrations

Use Opper with AI editors, CLI, and skills

Control Plane

Observe

Tracing, metrics, and automated quality evaluation for every call

Steer

Guide AI behavior through in-context learning and feedback loops

Memory

Store and retrieve custom knowledge for AI tasks

Guard

Safety guardrails and content filters for your AI systems

Cookbook

Agent

Build intelligent agents that perform complex multi-step tasks

Chatbot

Create conversational interfaces with context awareness

Multimodal

Work with text, images, audio, and other media types

All examples & guides

Browse the full cookbook of patterns and tutorials