This researcher turned OpenAI’s open weights model gpt-oss-20b into a non-reasoning ‘base’ model with less alignment, more freedom
Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders. Subscribe Now OpenAI’s new, powerful open weights AI large language model (LLM) family gpt-oss was released less than two weeks ago under a permissive Apache 2.0 license — the company’s first open weights model launch since GPT-2 in 2019 — but developers outside the company are already reshaping it. One of the most striking examples comes from Jack Morris, a Cornell Tech PhD student, former Google Brain Resident, and current researcher at Meta, who this week unveiled gpt-oss-20b-base, his own reworked version of OpenAI’s smaller gpt-oss-20B model, which removes the “reasoning” behavior of the model and returns it to a…
