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Claude Code

Anthropic protocol (no /v1)

Anthropic's official CLI — native Anthropic protocol.

Base URL

https://llmapi.pro

API Key

sk-... (create in Console → API Keys)

Choose a model

Copy the exact model ID from the subscription model list or pay-as-you-go channels, and check that your client protocol supports it. The model catalogue labels each model’s billing mode.

A monthly subscription uses a subscription key, with supported models sharing the plan quota. Pay-as-you-go API billing uses a separate key and balance. Select the matching key type in the Console, then configure your client protocol. Topping up API credit does not increase subscription quota.

Setup steps

Set environment variables (Base URL without /v1):

# macOS / Linux
export ANTHROPIC_BASE_URL=https://llmapi.pro
export ANTHROPIC_AUTH_TOKEN=sk-YOUR_KEY

# Windows PowerShell
$env:ANTHROPIC_BASE_URL="https://llmapi.pro"
$env:ANTHROPIC_AUTH_TOKEN="sk-YOUR_KEY"

# Windows CMD
set ANTHROPIC_BASE_URL=https://llmapi.pro
set ANTHROPIC_AUTH_TOKEN=sk-YOUR_KEY

Just run claude. To persist: add to ~/.zshrc / ~/.bashrc (Mac/Linux) or use setx (Windows).
Pick a model: claude --model claude-opus-5, or claude --model claude-fable-5.
Want Fable 5 (or any custom model) to show up directly in the /model menu? The latest Claude Code /model menu only lists built-in models with no free-text input — set the env var below to add it to the bottom of the menu (you can also always run claude --model claude-fable-5 directly):

# macOS / Linux
export ANTHROPIC_CUSTOM_MODEL_OPTION=claude-fable-5
export ANTHROPIC_CUSTOM_MODEL_OPTION_NAME="Fable 5"

# Windows PowerShell
$env:ANTHROPIC_CUSTOM_MODEL_OPTION="claude-fable-5"
$env:ANTHROPIC_CUSTOM_MODEL_OPTION_NAME="Fable 5"

Notes

Claude Code uses the Anthropic protocol — Base URL has no /v1.
Fable 5 not appearing in the /model menu by default is expected — that menu is a hard-coded client-side list unrelated to our model catalog; add it via ANTHROPIC_CUSTOM_MODEL_OPTION above.
Want 5h / weekly usage in your status bar? See Usage in Claude Code.

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

Ready to connect?

Check your base URL & generate settings · Choose your client guide · Create an account

Need help? Email support@llmapi.pro · Home

Updates

Claude Code

Setup steps

Notes