API
Claude
Opus
Sonnet
Haiku
v1
API
Claude
Opus
Sonnet
Haiku
v1

Anthropic Claude API

High-performance API service for Claude models. Compatible with Claude Code, OpenCode, Codex, OpenClaw, and all major IDE integrations.

All Claude Models

Access Claude Opus, Sonnet, and Haiku — from complex reasoning to speed-optimized tasks.

Full Tool Support

Complete tool use, streaming, and all Anthropic API features. Seamless IDE integrations.

Universal Compatibility

Works with Claude Code, OpenCode, Codex, OpenClaw, VS Code, JetBrains, and more.

Usage Tracking

Real-time token counting, cost tracking, and detailed request logs.

Secure API Keys

sk-ant- prefixed keys with configurable budgets in USD and tokens.

OpenAI Compatible

Dual-protocol — Anthropic Messages API and OpenAI Chat Completions API.

Base URL

https://orproject.online/v1