Z.ai Unmasks Mystery 'Ox Alpha' Model as GLM-5.3-Flash
Chinese AI firm Z.ai confirmed its anonymous "Ox Alpha" model was GLM-5.3-Flash, releasing the open-weight, multimodal model under an MIT license.
Read more →Open-Weight Models
Open-weight models are AI models whose trained parameters are published for anyone to download and run, even though the training data, code, or full training recipe often stay private. The approach sits between fully closed, API-only models and fully open-source projects, and has become the norm for labs like Meta, Mistral, DeepSeek, and Qwen. This hub follows new open-weight releases, their licensing terms, and how they compare to closed alternatives.
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Zhipu AI's GLM-5.3 Finds 45-Year-Old Bug, Delays Open Release
Zhipu AI's new GLM-5.3 model found thousands of software vulnerabilities during safety testing, including a 45-year-old bug, prompting a delayed open-weight release.
Read more →Liquid AI Releases LFM2.5-2.6B, an On-Device AI Agent Model
Liquid AI has released LFM2.5-2.6B, an open-weight model small enough to run on a phone or laptop while handling multi-step AI agent tasks offline.
Read more →Mistral AI Releases Shieldstral, an Open-Weight Safety Classifier
Mistral AI has open-sourced Shieldstral, a 3-billion-parameter model that moderates text and images against custom, plain-language policies without retraining.
Read more →Thinking Machines Releases Inkling-Small, Outperforms Larger Model
Thinking Machines Lab's second open-weight model needs a quarter of its predecessor's active parameters yet edges past it on reasoning and coding benchmarks.
Read more →LG Launches K-EXAONE 2.0, South Korea's Largest Open AI Model
LG AI Research released K-EXAONE 2.0, a 750-billion-parameter open-weight model under the Apache 2.0 license, aiming to rival Chinese and US frontier AI labs.
Read more →Anthropic's Amodei Denies Seeking Open-Weight AI Ban
Anthropic CEO Dario Amodei said in a July 27 blog post that the company has never called for banning open-weight AI models, urging chip controls and mandatory safety testing instead.
Read more →Moonshot AI Releases Kimi K3, Its Largest Open-Weight Model
Beijing-based Moonshot AI has published the full open weights for Kimi K3, a 2.8-trillion-parameter model it calls the largest open model released to date.
Read more →Poolside Releases Laguna S 2.1, an Open-Weight Coding Model
Poolside's new 118-billion-parameter Laguna S 2.1 matches or beats far larger rivals on agentic coding benchmarks and ships under an open license.
Read more →Nvidia's Huang Rallies 50 Companies Behind Open-Weight AI
Nvidia CEO Jensen Huang used his first-ever X post to unveil a letter — now signed by 50 firms including Google, Meta and OpenAI — urging Washington not to restrict open-weight AI models.
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What Is FLUX — and How Do You Use It?
FLUX is Black Forest Labs' family of AI image and video models, usable through a free browser Playground, a paid API, or open-weight downloads. Here's what it is and how to try it.
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What Is Mistral AI? Europe's Open-Weight AI Lab, Explained
Mistral AI is the Paris-based lab racing to build Europe's answer to OpenAI and Anthropic — known for releasing open-weight models and for its 'sovereign AI' pitch to European governments.
Read more →Moonshot AI Halts New Kimi K3 Subscriptions Amid GPU Crunch
Moonshot AI has paused new sign-ups for its Kimi K3 chatbot after demand outpaced its GPU capacity within days of launch, while keeping its July 27 open-weight release on schedule.
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What Is Kimi K3 — the AI Model That Spooked Chip Stocks?
Kimi K3 is a giant open-weight AI model from China's Moonshot AI. Here's what it is, who built it, and why its release rattled Nvidia and chip investors.
Read more →Moonshot AI Unveils Kimi K3, a 2.8-Trillion-Parameter Open Model
China's Moonshot AI released Kimi K3, a 2.8-trillion-parameter open model with a 1-million-token context window — a system the company calls the world's first open 3-trillion-class AI model.
Read more →PrismML's Bonsai 27B Becomes First 27B AI Model to Run on a Phone
PrismML has released Bonsai 27B, a 27-billion-parameter open-weight model compressed to under 4GB, small enough to run natively on a phone while keeping most of its reasoning ability.
Read more →Thinking Machines Lab Releases Inkling, an Open-Weight AI Model
Mira Murati's startup released Inkling, a 975-billion-parameter open-weight model built for developers to fine-tune and adapt, rather than to top leaderboards.
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What Is DeepSeek? The Chinese AI Lab That Rattled Silicon Valley
DeepSeek is the Chinese AI lab whose cheaply trained, open-weight models triggered Nvidia's biggest one-day stock drop and reshaped how the industry talks about AI costs.
Read more →What Is Meta AI? Llama vs. Muse, Explained
Meta now builds two separate AI model families: the open-weight Llama and the new proprietary Muse. Here's how they differ, and how to try either one.
Read more →What Is GLM? Zhipu AI's Open-Weight Model Family, Explained
GLM is the open-weight AI model family from Chinese lab Zhipu AI (Z.ai) — free to download and self-host, and competitive with top US models at a fraction of the API cost.
Read more →China's GLM-5.2 Rivals US Frontier AI at One-Sixth the Cost
Z.ai has released GLM-5.2, a 744-billion-parameter open-weight model that matches GPT-5.5 on key benchmarks and trails Claude Opus 4.8 narrowly — trained entirely on Huawei silicon with no Nvidia hardware.
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