OpenRouter Free Models

OpenRouter offers a set of models with a ":free" suffix in their model ID at no cost, gated by rate limits per OpenRouter's official API reference: 20 requests per minute, and either 50 requests/day (under $10 in lifetime credit purchases) or 1,000 requests/day (at $10 or more in lifetime credit purchases). No credits are consumed by using the free models themselves — the tiering is based on the account's separate credit-purchase history. Verified on OpenRouter's official API limits documentation.