Price is only one part of choosing an AI relay station. This guide covers model authenticity, stability, usage logs, API compatibility, privacy, support, balance rules, and why you should test with a small amount first.
A practical explanation of OpenAI-compatible APIs, including API keys, base URLs, model names, endpoints, the /v1 suffix, Chat Completions, Responses, and relay providers.
A step-by-step Windows, macOS, and Linux guide for routing Codex and Claude Code through AI relay APIs using local key files, config files, and smoke tests.