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Codex CLI (OpenAI)

OpenAI-compatible (with /v1)

OpenAI's command-line coding tool.

Base URL

https://llmapi.pro/v1

API Key

sk-... (create in Console → API Keys)

Recommended

claude-opus-4-8 · claude-sonnet-4-6 · claude-haiku-4-5

Setup steps

Configure a custom provider in ~/.codex/config.toml:

model_provider = "llmapi"
model = "claude-opus-4-8"

[model_providers.llmapi]
name = "llmapi"
base_url = "https://llmapi.pro/v1"
env_key = "LLMAPI_API_KEY"

Set the key env var: export LLMAPI_API_KEY=sk-YOUR_KEY

Notes

This client uses the OpenAI-compatible protocol. The three settings are always the same: Base URL = https://llmapi.pro/v1, API Key = your sk-... key, and type the model name manually (we recommend claude-opus-4-8).

Client not listed? Any "OpenAI-compatible" app works: Base URL = https://llmapi.pro/v1, key = your sk-..., type the model name. Or email [email protected].

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