Notes on Kimi K2 Thinking, the huge new open weights (but not open source, it's under a "modified MIT license") model from Moonshot AI simonwillison.net/2025/Nov/6/k...
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simonwillison.netKimi K2 ThinkingChinese AI lab Moonshot's Kimi K2 established itself as one of the largest open weight models - 1 trillion parameters - back in July. They've now released the Thinking version, …
Which means it's not OSI compliant, which is my bar for calling something "open source" over just "open weights"
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Even if we only accept their definitions, I think it would still be OSI compliant, just not OSI approved if it hasn't been submitted to their review. OSI approved licenses have similar attribution requirements, so that in itself isn't a problem.
opensource.orgCommon Public Attribution License Version 1.01. “Definitions” 1.0.1 “Commercial Use” means distribution or otherwise making the Covered Code available to a third party. 1.1 “Contributor” means each entity that creates or contributes to the creat...