GPT-OSS 20B (Free)

GPT-OSS 20B is OpenAI's open-weight reasoning model released under Apache 2.0, featuring 21B total parameters with 3.6B active per forward pass via a Mixture-of-Experts architecture. It is designed for local or consumer-grade hardware deployment and supports tool use, function calling, structured outputs, and configurable reasoning effort. Source: supabase.