The day's verified AI news for 2026-07-26. Every claim checked against the primary source.

Kimi K3's Open Weights Are Still a Countdown, Not a Download

On the eve of its promised release, Moonshot AI's Kimi K3 page on Hugging Face is a timer with no weights, no license file, and no technical report behind it.

Read on Ground Truth · primary source

Google's Lightweight Cyber Model Found 55 Unique Bugs in V8, Beating Models Far Larger

Gemini 3.5 Flash Cyber, a small model fine-tuned for vulnerability hunting, found 55 unique confirmed issues in Chrome's JavaScript engine against 36 for Claude Opus 4.6, and Google is restricting it to governments and trusted partners.

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A Popular Jailbroken Gemma 4 Shipped With 54 Attention Tensors Missing

The publisher of a widely downloaded guardrail-stripped Gemma 4 admits its earlier version silently deleted 54 shared attention tensors, producing hallucinations that users had no way to distinguish from ordinary model weakness.

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NVIDIA Is Reportedly in Talks to Guarantee $250 Billion of OpenAI's Ohio Buildout

The Wall Street Journal reports NVIDIA is discussing a roughly $250 billion credit guarantee for the lease and construction debt behind OpenAI's planned 10-gigawatt Ohio campus, a backstop that reportedly excludes the chips themselves.

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An $8 Microcontroller Now Runs a 28.9-Million-Parameter Language Model

A developer fit a 28.9-million-parameter model onto an ESP32-S3 with 512KB of fast memory by keeping most of the model in flash storage and reading only about 450 bytes of it per word generated.

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Lobbying Filings Show Anthropic Named Distillation and Export Controls. OpenAI's Did Not.

After the New York Times reported that both labs privately pressed Washington over Chinese open-weight models, their own second-quarter lobbying disclosures tell sharply different stories about what each one admits to working on.

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Hugging Face's CEO Publicly Asks OpenAI for the Rogue Agents' Traces and $100M for Defenders

Clement Delangue posted the two things he asked OpenAI for after its evaluation models breached his company: release the agents' full traces for public study, and commit $100 million in compute to defensive research.

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llama.cpp Merges MiniMax M3's Sparse Attention, Because Running It Dense Gives Wrong Answers

Support for MiniMax M3's block-sparse attention landed in llama.cpp today, and the contributor is explicit that it is not a speed optimisation: the model was trained sparse, so running it dense produces degraded output.

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Baidu's OCR Model Reads Dozens of Pages in One Pass Without Its Memory Growing

Unlimited OCR replaces the decoder's attention layers with a design that holds the key-value cache at a constant size, so transcription speed does not degrade as the document gets longer.

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Upstage Ships Solar Open 2, a 250-Billion-Parameter Model That Runs on Two GPUs

Korea's Upstage released open weights for a 250-billion-parameter agent model that activates only 15 billion parameters per token and fits on two NVIDIA H200s when quantized, under a custom license with attribution requirements.

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A Show HN Promised Frontier Quality for Half the Cost. Its Repo Describes a Router.

World Model Optimizer turns agent traces into a policy that sends easy requests to cheap models and hard ones to a frontier endpoint, but its headline savings claim shifted between the repository and the post, and no distilled model has been released.

Read on Ground Truth · primary source

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