GPT API for Coding Agents: OpenAI & Claude | CodeI Lab
Call GPT models with discounted API credit at a fraction of official pay-as-you-go cost. Use OpenAI or Claude protocols and configure Claude Code, Codex CLI or OpenCode with one command.
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+25 llms.txt
+15 structured API
missing +20 ai-plugin
Raise this score to 95+
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llms.txt Content
# CodeI Lab
> CodeI Lab (https://www.codeilab.com) provides GPT models through discounted API plans, with included usage credit priced below equivalent official pay-as-you-go cost.
> It supports OpenAI-compatible endpoints at https://www.codeilab.com/api/codex and Anthropic Messages
> compatibility at https://www.codeilab.com/api/anthropic, so clients can keep their existing protocol.
> Claude Code, Codex CLI and OpenCode can be configured with one command; Cursor and
> other OpenAI-compatible clients can use the same base URL and a CodeI API key.
> It is a third-party service, not affiliated with OpenAI or Anthropic.
## Documentation
- [Point Claude Code at CodeI Lab with ANTHROPIC_BASE_URL (English)](https://www.codeilab.com/docs/agents/claude-code)
- [config.toml reference for Codex with CodeI Lab (English)](https://www.codeilab.com/docs/reference/config-toml)
- [Fix: 401 Unauthorized with a custom Codex base URL (English)](https://www.codeilab.com/docs/troubleshooting/fix-401-unauthorized)
- [Installation (English)](https://www.codeilab.com/docs/getting-started/installation)
- [Install the Codex CLI against CodeI Lab with openai_base_url (English)](https://www.codeilab.com/docs/agents/codex)
- [Configuration (config.toml) (English)](https://www.codeilab.com/docs/getting-started/configuration)
- [Fix: model_not_found and retired model errors (English)](https://www.codeilab.com/docs/troubleshooting/model-not-found)
- [API usage, quota, and token limits (English)](https://www.codeilab.com/docs/getting-started/apiusage)
- [Connect Cursor to CodeI Lab with a custom OpenAI base URL (English)](https://www.codeilab.com/docs/agents/cursor)
- [Fix: quota and subscription errors (403) (English)](https://www.codeilab.com/docs/troubleshooting/quota-exceeded)
- [Choose reasoning effort in Cursor (English)](https://www.codeilab.com/docs/getting-started/cursor-reasoning)
- [Configure OpenCode to use CodeI Lab models (English)](https://www.codeilab.com/docs/agents/opencode)
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