To test Kimi K3 on OpenRouter with codex, place this in your ~/.codex/k3.config.toml
model_provider = "openrouter"
model_reasoning_effort = "max" # options: low, high, max (default)
model="moonshotai/kimi-k3"
[model_providers.openrouter]
name = "openrouter"
base_url="https://openrouter.ai/api/v1"