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Anthropic is the default provider for Node to Code, with Claude 4 Sonnet selected as the default model. No changes are required if you want to use this provider out of the box — just add your API key.

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Getting an API key

1

Create an Anthropic account

Go to console.anthropic.com and sign in or create an account.
2

Generate an API key

Navigate to API Keys and click Create Key. Copy the key — you won’t be able to view it again after closing the dialog.
3

Add the key in Unreal Engine

Open Edit → Project Settings → Plugins → Node to Code → LLM Services → Anthropic and paste your key into the API Key field.
4

Confirm provider selection

Under Node to Code | LLM Provider, confirm Provider is set to Anthropic (it is by default).

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Model selection

Set the model under Node to Code | LLM Services | Anthropic → Anthropic Model.
Display nameModel IDNotes
Claude 4 Opusclaude-4-opus-20250514Most capable Claude model
Claude 4 Sonnetclaude-4-sonnet-20250514Default — recommended
Claude 3.7 Sonnetclaude-3-7-sonnet-20250219
Claude 3.5 Sonnetclaude-3-5-sonnet-20241022
Claude 3.5 Haikuclaude-3-5-haiku-20241022Fastest and most economical
Claude 4 Sonnet is the recommended model for most Blueprint translation tasks. It balances quality, speed, and cost. Use Claude 4 Opus for the most complex or deeply nested graphs where maximum reasoning capability is needed.

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System prompt support

All Anthropic models fully support system prompts. Node to Code uses a system prompt to provide translation context and instructions, and all Claude models handle this correctly without any special configuration.

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