We’re launching a $500K Red Teaming Challenge to strengthen open source safety. Researchers, developers, and enthusiasts worldwide are invited to help uncover novel risks—judged by experts from OpenAI and other leading labs.
OPEN SOURCE
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OpenAI’s Open Weight Models Now Available on Replicate
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OpenAI's open weight models are on Replicate, day 0!
— Replicate (@replicate) 5 août 2025
gpt-oss-120b: https://t.co/Xq6gupjErK
gpt-oss-20b: https://t.co/Htwem1Yy3G pic.twitter.com/3taGGU6leSOpenAI's open weight models are on Replicate, day 0! gpt-oss-120b: http://
replicate.com/openai/gpt-oss
-120b
…
gpt-oss-20b: http://
replicate.com/openai/gpt-oss
-20b
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GPT OSS Tool Enables AI Research Paper Analysis
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Introducing GPT OSS for understanding research papers 🚀
— alphaXiv (@askalphaxiv) 5 août 2025
Highlight any section of a paper to ask questions and “@” other papers for quick context, comparisons, and benchmark references pic.twitter.com/9BGeZspAb2Introducing GPT OSS for understanding research papers Highlight any section of a paper to ask questions and “@” other papers for quick context, comparisons, and benchmark references
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OpenAI GPT becomes open source on Hugging Face
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More info here: https://
huggingface.co/blog/welcome-o
penai-gpt-oss
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GPT-OSS: Try Open Source Language Models Live Online
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Try it live here → https://
gpt-oss.com You’ll also find instructions to download and run the models locally with your favorite tool — @huggingface
, @ollama
, or @lmstudio
. Unless you have a MacBook M3 Ultra or M4 Max with 128 GB RAM, start with the smaller gpt-oss-20b! -
GPT-OSS Builds Video Game Using Tool Integration and Chain-of-Thought
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Want to see our open models in action? Watch how gpt-oss builds a video game—using tools step-by-step within chain-of-thought reasoning
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GPT-OSS Chat Template Special Tokens Analysis
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Wow gpt-oss has a very interesting chat template Special tokens for "channel" (analysis, commentary, final) and "constrain". Still pretty ChatML-like!
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OpenAI Open Weights Models Outperform Earlier Generation AI
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The OpenAI open weights models are very impressive. These basically beat every model from eight months ago & the small one runs on a laptop. For example, when HLE came out in January, the top score was 3-4%. Been playing with the models and so far they feel like their scores.
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Stealth AI Models Outperform Open Source Models on WebArena
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Ha habido mucha especulación en las últimas semanas sobre si los modelos furtivos aparecidos en el WebArena serían los modelos open source pero al parecer no. Aquellos rendían mejor. https://t.co/tZ5SaLGSXy
— Carlos Santana (@DotCSV) 5 août 2025Ha habido mucha especulación en las últimas semanas sobre si los modelos furtivos aparecidos en el WebArena serían los modelos open source pero al parecer no. Aquellos rendían mejor.
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Open Source LLMs and RL Boost AI Product Margins
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One super important point: for companies using LLMs at scale, the new open source OpenAI models, combined with RL from folks like @OpenPipeAI
, will dramatically improve margins on AI products!