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Open models

Open models are AI models whose weights are published for anyone to download and run, usually under a license that permits some reuse. The term covers a wide range, from fully open-source releases to "open-weight" models with restrictive licenses, and the difference matters for what you can legally do with them.

50 stories · updated Oct 13

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Key facts

Checked Oct 8

Open Source AI Definition: Version 1.0, published October 28, 2024 (OSI)
Required components (OSAID): Data information, code, parameters
Four freedoms (OSAID): Use, study, modify, share, for any purpose

Latest on Open models

Open source · NewsReflection AI Beam: the 501B open-weight model whose weights aren't out yet, and the Nvidia talksReflection AI announced Beam, a 501B-parameter (23B active) open-weight model, on October 5, 2026, with Apache 2.0 weights promised for later in October. Five days later the FT reported Nvidia is in early talks to invest more in Reflection or buy it.Oct 13·5 min read

Open source · NewsKimi K2.6 isn't new: what Moonshot released in April, and where the "1,000 agents" claim comes fromOctober headlines call Kimi K2.6 a fresh launch with 1,000-agent swarms. Moonshot open-sourced Kimi K2.6 on April 20, 2026, and its own materials say 300 sub-agents. Here's what K2.6 is, what it costs, and how it relates to Kimi K3.Oct 13·4 min read

Open source · NewsDeepSeek-V4.1-Flash: an MIT-licensed open-weights MoE that DeepSeek says beats its own flagshipReleased September 10, DeepSeek's new Flash model activates 8B–16B parameters per token, reads 1M tokens and images, and now answers V4-Pro API calls. What's confirmed and what's vendor-reported.Oct 9·7 min read

Open source · AnalysisOpen-weight licenses compared: Llama vs Apache, MIT and the new revenue-gated licensesWe read the license texts. What Llama, Apache 2.0, MIT, Gemma's terms and the newest Qwen and Mistral licenses actually let you do, and why "open weights" isn't "open source".Oct 9·8 min read

Models · AnalysisDo AI labs really ship 'mini' models first? What the release record since 2024 showsAcross 32 small-vs-flagship pairings from six labs, the small model came first only five times. Here's what really drives the timing, and the price war at the bottom.Oct 9·9 min read

Industry · CompareFrontier APIs vs open models: what they really costHosted open models are cheap, but the frontier labs' small models now list even lower. Self-hosting pays off only at very high, steady volume. Verified prices and the arithmetic.Oct 9·Checked Oct 8

Models · ExplainerHow to choose a small AI model for your laptop: the memory math and the current shortlistParameters, quantization and context length decide whether a model fits. Here's how to do the arithmetic, and which open models to try at 8, 16 and 32 GB.Oct 9·7 min read

Policy · ExplainerWhat the EU AI Act means if you only use model APIsYou may never train a model and still be a "provider" under the AI Act. How the roles work, which duties are live in October 2026, and a checklist for teams building on hosted models.Oct 9·8 min read

Open source · GuideHow to run an open model locally with Ollama (October 2026)Install Ollama, pull a model, chat with it, call it from code, and keep the server off the public internet. Every command comes from Ollama's official documentation.Oct 9·8 min read

Policy · ExplainerThe EU AI Act in October 2026: what actually applies nowThe AI Omnibus pushed high-risk rules to late 2027, but general-purpose AI obligations, transparency duties and EU enforcement are already live. The dates, from official EU sources.Oct 9·9 min read

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