94Fit score
gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward …
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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.
94Fit score
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
Model details →90Fit score
DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model from DeepSeek, with 13B active parameters out of 284B total. This re-post-trained revision is suited for coding, reasoning, and agent workflows....
Model details →Top 25 models for free models
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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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