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Anthropic launches Project Glasswing to defend critical software against AI-powered attacks

Anthropic has announced Project Glasswing, a new initiative to secure critical software infrastructure against AI-powered attacks. The project includes 11 major partners including Amazon, Apple, Google, Microsoft, and NVIDIA, and will use Claude Mythos Preview, an unreleased general-purpose model from Anthropic that claims to have found thousands of exploitable vulnerabilities across major operating systems and web browsers.

April 7, 2026

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Arcee releases Trinity Large Thinking, an open-source reasoning model built on $20M budget

Arcee, a 26-person U.S. startup, released Trinity Large Thinking, an open-source reasoning model it claims is the most capable open-weight model ever released by a non-Chinese company. Built on a $20 million budget, the model competes with other top open-source offerings while maintaining Apache 2.0 licensing, positioning itself as an alternative to both closed-source Western models and Chinese alternatives.

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model releaseAnthropic

Anthropic restricts Claude Mythos to security researchers under Project Glasswing

Anthropic has not publicly released Claude Mythos, instead restricting access to a vetted set of partners through Project Glasswing. The company claims the model's cybersecurity research abilities—including finding thousands of high-severity vulnerabilities in major operating systems and browsers—warrant controlled deployment until industry safeguards mature.

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model release

Google releases Gemma 4 26B with 256K context and multimodal support, free to use

Google DeepMind has released Gemma 4 26B A4B, a free instruction-tuned Mixture-of-Experts model with 262,144 token context window and multimodal capabilities including text, images, and video input. Despite 25.2B total parameters, only 3.8B activate per token, delivering performance comparable to larger 31B models at reduced compute cost.

2 min readvia openrouter.ai
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model release

Google releases Gemma 4 31B free model with 256K context and multimodal support

Google DeepMind has released Gemma 4 31B Instruct, a free 30.7-billion parameter model with a 256K token context window, multimodal text and image input capabilities, and native function calling. The model supports configurable reasoning mode and 140+ languages, with strong performance on coding and document understanding tasks under Apache 2.0 license.

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benchmark

Google AI Overviews reach 91% accuracy with Gemini 3, but 56% of answers lack verifiable sources

An independent study by AI startup Oumi found that Google's AI Overviews answered correctly 91% of the time with Gemini 3, up from 85% with Gemini 2, based on 4,326 searches using the SimpleQA benchmark. However, 56% of correct answers in Gemini 3 could not be verified through the linked sources—a significant increase from 37% in Gemini 2—and at Google's scale, a 9% error rate still translates to millions of wrong answers per hour.

3 min readvia the-decoder.com
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model releaseAnthropic

Anthropic unveils Claude Mythos model, finds thousands of OS vulnerabilities via Project Glasswing

Anthropic has unveiled Claude Mythos, a new AI model designed for cybersecurity that has already discovered thousands of high-severity vulnerabilities in every major operating system and web browser. The model is being distributed as a preview to over 40 organizations and major technology partners including Apple, Google, Microsoft, and Amazon Web Services through Project Glasswing, a coordinated cybersecurity initiative.

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product updateApple

Apple, Google, Microsoft join Anthropic's Project Glasswing to find critical software vulnerabilities

Twelve major technology companies—including Apple, Google, Microsoft, Amazon, and Nvidia—have launched Project Glasswing, a coordinated effort to identify and patch critical software vulnerabilities using Anthropic's unreleased Mythos Preview model. The initiative discovered thousands of zero-day vulnerabilities in mission-critical software, including a 27-year-old bug in OpenBSD and a 16-year-old vulnerability in widely-used video software that automated testing tools had missed.

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model releaseAnthropic

Anthropic previews Mythos, claims it found thousands of zero-day vulnerabilities in cybersecurity initiative

Anthropic unveiled a preview of Mythos, a frontier model it claims is the most powerful in its Claude lineup, for use in Project Glasswing—a cybersecurity initiative with 40+ partner organizations. According to Anthropic, Mythos identified thousands of zero-day vulnerabilities, many critical and up to two decades old, during early testing. The model will not be made generally available and is restricted to defensive security work by vetted partners.

2 min readvia techcrunch.com

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