Reasoning-focused model for complex planning and math tasks.
Model details →Best free AI models
These models are free to use either via a hosted free tier (look for ':free' suffixes) or because the weights are open and runnable on your own hardware.
Fast reasoning model optimized for cost/performance.
Model details →Balanced general model for production assistants and tools.
Model details →Top 4 models for free models
Frequently asked questions
Are these models really free?
Models with ':free' in the id are available at no cost on OpenRouter's free tier (with rate limits). Open-weight models are free if you self-host — you only pay for compute.
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