Open Weights22 articles

Open Weights

Articles

Z.ai Releases Flagship GLM-5.3 Open Weights with Hyperscaler Commercial Restrictions
Chinese AI laboratory Z.ai has released the open weights for its flagship GLM-5.3 model on Hugging Face, introducing a tiered licensing structure that places specific restrictions on commercial hyperscalers. The release follows a two-week safety evaluation period that began after the model's initial API launch earlier this month. While previous models in the family, including GLM-5.2 and GLM-5.3-Flash, were distributed under the permissive MIT license, the flagship release introduces the custom
August 28, 20261 min
Tencent Open-Sources Hy4-Preview: 770B MoE Architecture with 1M Context
Tencent has released the open-weights preview of its next-generation foundation model, Hy4-preview, under the Apache 2.0 license. The release scales the organization's Mixture-of-Experts (MoE) line to 770 billion total parameters, activating 49 billion parameters per token across a native 1-million-token context window. Weights have been published across Hugging Face, ModelScope, GitCode, and GitHub, alongside managed API availability on Tencent Cloud TokenHub and OpenRouter. Architectural Sp
August 28, 20261 min
Moonshot AI in Revenue-Sharing Talks with Microsoft, Amazon, and Google to Host Kimi K3
Beijing-based artificial intelligence developer Moonshot AI is negotiating revenue-sharing partnerships with Microsoft, Amazon, and Alphabet's Google to host its flagship open-weight model, Kimi K3, across major cloud platforms. According to reporting from Reuters, the startup is seeking up to a 30 percent share of revenue generated from Kimi K3 inference services hosted on Microsoft Azure, Amazon Web Services (AWS), and Google Cloud. Moonshot released Kimi K3 in July 2026 as a 2.8-trillion par
August 26, 20261 min
Zhipu Confirms Ox Alpha Stealth Model Is GLM Derivative Ahead of Open-Weight Release
Beijing-based AI lab Z.AI, widely known as Zhipu, has confirmed that the mystery stealth model "Ox Alpha" is an upcoming release in its GLM model series. The company confirmed the model's identity in response to inquiries from Bloomberg on Wednesday and stated it will release the open model weights tonight. Ox Alpha first appeared on August 20, 2026, as an uncredited stealth model on the OpenRouter model routing platform. Operating under a free evaluation tier, the model quickly surged to the t
August 26, 20261 min
IBM Releases Granite Speech 5.0 with 12,600x Real-Time CTC Conformer Architecture
IBM has released Granite Speech 5.0, a pair of compact 470-million-parameter automatic speech recognition (ASR) models capable of transcribing over 3.5 hours of audio in one second on modern datacenter silicon. In benchmark evaluations, IBM demonstrated aggregate throughput exceeding 12,600x real-time (12,600 RTFx) on a single NVIDIA H200 GPU. The release includes two variants: Granite Speech 5.0 TurboCTC under the permissive Apache 2.0 license, and an extended research checkpoint licensed unde
August 25, 20261 min
IBM Releases Granite 4.2 Open-Weight Reasoning Models with Multi-Stage Agentic RL
IBM has released Granite 4.2, a new family of dense, decoder-only reasoning language models distributed under an Apache 2.0 open-source license. Available in three parameter sizes (3B, 8B, and 30B), the series introduces native chain-of-thought deliberation, multi-tier reasoning controls, and sandboxed agentic reinforcement learning for open-weight deployments. The release marks a architectural shift from IBM's earlier instruction-following Granite checkpoints toward explicit reasoning and auto
August 25, 20261 min
Thomson Reuters Deploys Thomson-1 Model Built on Open Weights to Cut Frontier Model Dependence
Thomson Reuters has deployed Thomson-1, a proprietary artificial intelligence model engineered from an open-weight base architecture. The system is designed to execute high-volume legal and domain-specific analytical workflows, reducing the information conglomerate's direct computational dependence on third-party frontier models like Anthropic's Claude. According to financial reporting and recent corporate earnings disclosures, Thomson Reuters invested approximately $40 million into developing
August 25, 20261 min
Chinese State-Linked Hackers Double Attack Volume Using DeepSeek AI, Researchers Find
State-affiliated Chinese cyber espionage groups have more than doubled their operational attack volume by integrating open-weight artificial intelligence models into routine reconnaissance and script generation workflows, according to threat intelligence from Taiwanese cybersecurity firm TeamT5 and reporting by Bloomberg. The surge in offensive volume is driven primarily by DeepSeek models, which threat actors favor due to low inference costs, local deployment options, and minimal safety guardr
August 25, 20261 min
Liquid AI Ships LFM2.5-DSpark Draft Models for Up to 3.2x Faster Inference
Liquid AI has released speculative decoding draft checkpoints for three models across its LFM2.5 series: LFM2.5-1.2B-Instruct, LFM2.5-2.6B, and the mixture-of-experts model LFM2.5-8B-A1B. The release introduces small companion models designed to accelerate auto-regressive generation without altering final token distributions. The draft models are available in Safetensors and GGUF formats on Hugging Face, with immediate support implemented for SGLang and llama.cpp. Architecture and Draft Desig
August 20, 20261 min
Unsloth Releases Dynamic V3.0 GGUFs for Qwen 3.8 27B with 1-Bit Mode and MTP
Unsloth AI has published its Dynamic V3.0 quantization suite for Alibaba's Qwen 3.8 27B model family, releasing optimized GGUF and NVFP4 checkpoints alongside public calibration matrices. The release claims a greater than 10 percent increase in top-1 percent accuracy at identical file sizes compared to standard baseline quantizations, while introducing an ultra-low-bit dynamic tier that operates within 8GB of memory. Qwen 3.8 27B is a dense vision-language model utilizing hybrid attention layer
August 20, 20261 min
Liquid AI Releases Quantization-Aware Distilled Q4_0 Checkpoints for LFM2.5 Models
Liquid AI has released Quantization-Aware Distillation (QAD) Q4_0 GGUF checkpoints for its LFM2.5 model series, allowing edge runtimes to execute 4-bit quantized non-transformer architectures without the accuracy degradation typically associated with standard post-training quantization (PTQ). The release covers four models in the LFM2.5 family: LFM2.5-230M, LFM2.5-350M, LFM2.5-1.2B-Instruct, and LFM2.5-2.6B. The checkpoints are packaged in the standard GGUF format and run across llama.cpp and c
August 19, 20261 min
Reference-Free Preference Optimization: How ORPO and SimPO Eliminate Reference Models in LLM Alignment
Aligning large language models with human preferences has historically relied on two distinct stages after pretraining: Supervised Fine-Tuning (SFT) to establish instruction-following behaviors, followed by reinforcement learning from human feedback (RLHF) or Direct Preference Optimization (DPO) to maximize response quality. While DPO removed the need for explicit reward modeling and complex actor-critic policy loops (such as Proximal Policy Optimization, or PPO), it retained an architectural b
August 19, 20261 min
Mistral Expands Platform to Host Third-Party Open Weights Starting with GLM-5.2
Mistral AI has broadened its API platform to host external open-weight foundation models, beginning with Zhipu AI's GLM-5.2. The move marks a strategic shift for the Paris-based AI company from serving only in-house architectures (such as Mistral Small, Mistral Medium, Mistral Large, and Voxtral) toward operating as a sovereign managed inference hub for third-party open weights. The integration introduces GLM-5.2 under the model identifier zai-glm-5-2 in public preview. The model is hosted with
August 18, 20261 min
Harvey Introduces Tenet, Its First In-House Legal LLM Trained on Moonshot's Kimi K3
Legal AI startup Harvey has announced Harvey Tenet, its first proprietary, in-house foundation model tailored for legal workflows. The release marks a strategic shift for the $11 billion legal tech company, which has historically relied on API access to third-party frontier models from OpenAI and Anthropic. Tenet is post-trained on top of Kimi K3, an open-weights model released in July 2026 by Chinese AI lab Moonshot AI. The initiative is part of a broader platform update titled Harvey II, whic
August 18, 20261 min
Sentence Transformers v6.0 Adds Native Multi-Vector Late Interaction for ColBERT and ColPali
Hugging Face has released Sentence Transformers v6.0, adding native multi-vector late-interaction retrieval to the library through a new MultiVectorEncoder interface. The update integrates ColBERT-style models and vision-language document retrieval systems directly into the standard Sentence Transformers workflow alongside dense bi-encoders, sparse models, and cross-encoder rerankers. Mechanics of Late Interaction and MaxSim Standard dense embedding models compress an entire passage or query
August 18, 20261 min
Tencent Releases UI-Mate: Open-Weight Foundation GUI Agents with In-Context Demonstration Learning
Tencent's HY Frontier team has released UI-Mate, an open-weight foundation GUI agent designed for autonomous computer operation across desktop environments. Available in 27-billion and 9-billion parameter configurations, the models pair environment-grounded reinforcement learning with an in-context demonstration pipeline that allows agents to reference structured human workflows during execution. Alongside model weights on Hugging Face, Tencent published a technical report, code repository, and
August 18, 20261 min
Nvidia's Nemotron 3.5 Lightning bets on speed over size
Nvidia has released Nemotron 3.5 Lightning, the first model in a new Nemotron 3.5 family, and it is playing a different game than most open-weight releases this year. Instead of chasing the highest intelligence score, Nvidia built a compact model that runs fast and cheap while still matching much larger rivals on standard benchmarks. A small model that keeps up Lightning carries 31.6 billion total parameters, but only 3.6 billion are active at any moment. It keeps the hybrid Mamba-Transformer
August 11, 20261 min
MiniMax Ships H3, an Open-Weights Video Model with Native Stereo Audio
MiniMax's H3 generates 2K video with native stereo audio in a single forward pass, and the open weights are already on Hugging Face.
August 5, 20261 min
Zhipu's Open-Weight GLM-5.2 Matches Frontier Cyber Capabilities Without Safety Refusals, SaferAI Finds
SaferAI's independent evaluation finds Zhipu AI's GLM-5.2 performs near saturation on offensive cybersecurity benchmarks while refusing none of the dangerous tasks it was given. Frontier developers like Anthropic and OpenAI consistently refused the same requests.
August 4, 20261 min
Moonshot AI's Kimi K3 tops benchmarks as Chinese models reach the frontier
A two-year-old Beijing startup has produced a model that sits closer to the American frontier than anything from Alphabet, Meta, or SpaceX. Moonshot AI's Kimi K3, released July 16, is a 2.8-trillion-parameter open-weight system that jumped to first place on Arena.ai's Frontend Code leaderboard within hours of release, scoring 1,679 points against 1,631 for Anthropic's Claude Fable 5. It was the first Chinese model ever to top that board. On the Artificial Analysis Intelligence Index, K3 debuted
August 4, 20261 min