APIVAI is a pay-as-you-go API gateway for Claude and GPT models. One key works with both the Anthropic Messages format and the OpenAI Chat Completions / Responses formats, so Claude Code, Cursor, Codex CLI, Cline and the official SDKs work by changing only the base URL. Claude models cost 56–62% less than official list prices, GPT models up to 86% less. No subscription: top up from $10 by card, Alipay, WeChat Pay or crypto, and pay per token.
