OpenAI Just Released Its First Open-Weight Models Since GPT-2

image via WIRED

August 5, 2025, 5:00 PM

• •OpenAI released two open-weight language models, gpt-oss-120b and gpt-oss-20b, which can run locally and be fine-tuned.
• •The models, available under the Apache 2.0 license, represent a shift towards open AI, complementing OpenAI's paid services.
• •GPT-oss models use chain-of-thought reasoning and can browse the web, execute code, and navigate software.
• •The release comes after safety testing and aims to foster U.S.-led innovation in open AI, competing with Meta's Llama models and amid rising AI talent competition.

OpenAI has launched its first open-weight language models in five years, gpt-oss-120b and gpt-oss-20b, marking a shift toward open AI. These models, designed to run locally and be fine-tuned, are available under the Apache 2.0 license. The release aims to broaden AI accessibility and promote U.S.-led innovation. This move positions OpenAI to compete in the evolving AI landscape, particularly against companies like Meta and amidst intense competition for AI talent.

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