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The :free variant allows you to access free versions of models on OpenRouter.

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Usage

Append :free to any model ID: 
{
  "model": "meta-llama/llama-3.2-3b-instruct:free"
}

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Details

Free variants provide access to models without cost, but may have different rate limits or availability compared to paid versions.
  • Free Models Router - Learn how to use the Free Models Router in the Chat Playground for zero-cost inference