CodeI Lab

CodeI Lab is an independent third-party GPT API gateway built for coding agents. It is not affiliated with OpenAI. Developers get one API key to call GPT-6 and GPT-5.6 series models through the OpenAI Responses API, Chat Completions, or the Anthropic Messages API. These protocol options let Claude Code, Codex CLI, Cursor and OpenCode work unchanged.

The service is designed for developers who use coding agents and want discounted GPT API credit below official pay-as-you-go cost. OpenAI and Claude protocols are supported, so the gateway can be used with coding tools that rely on either of those protocols. Claude Code, Codex CLI or OpenCode can be configured in one command. One API key provides access to the GPT model series through the supported interfaces.

Pricing is paid and plan-based, with no free tier. Plan credit costs up to 93% less than official pay-as-you-go rates. A one-week trial costs $3 and includes $30 in usage quota. Monthly plans start at $9.90. The Plus plan costs $9.90 per month with $100 quota, Pro costs $39.90 per month with $500 quota, and Ultra costs $99.90 per month with $1,500 quota.

CodeI Lab is provided by Fomalhaut Labs in Singapore. Developers can visit the CodeI Lab website for the service, its documentation for setup information, and its pricing page for plan details. The gateway focuses on GPT API access for coding-agent workflows rather than a separate coding editor.