LLM News

Every LLM release, update, and milestone.

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model releaseOpenAI

OpenAI releases GPT-5.4-Cyber, a fine-tuned model for vetted cybersecurity defenders with binary reverse engineering cap

OpenAI announced GPT-5.4-Cyber, a variant of GPT-5.4 fine-tuned for defensive cybersecurity work. The model features binary reverse engineering capabilities and reduced safety restrictions, but access is limited to authenticated security professionals through the company's Trusted Access for Cyber program.

2 min readvia 9to5mac.com
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model releaseOpenAI

OpenAI releases GPT-5.4-Cyber with tiered access verification system for cybersecurity work

OpenAI released GPT-5.4-Cyber, a model variant designed for defensive cybersecurity tasks with fewer restrictions on dual-use queries. Access is controlled through a tiered verification system in the Trusted Access for Cyber program, targeting thousands of vetted users compared to Anthropic's 40-organization Mythos Preview rollout.

2 min readvia axios.com
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analysisAnthropic

UK AI Safety Institute confirms Claude Mythos finds more exploits as token spend increases

The UK's AI Safety Institute published an independent evaluation confirming Anthropic's Claude Mythos is highly effective at finding security vulnerabilities. The evaluation revealed a linear relationship: more tokens spent equals more exploits discovered, transforming security into an economic arms race.

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product update

Google Home April 2026 update reduces Gemini interruptions, improves speech recognition in noisy environments

Google Home's April 2026 update addresses Gemini voice assistant reliability issues. The update improves speech detection to reduce mid-sentence interruptions, speeds up responses to simple queries, and enhances music playlist recognition even when names are misspoken or in noisy environments.

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model releaseAnthropic

Anthropic briefed Trump administration on Mythos model despite Pentagon lawsuit

Anthropic co-founder Jack Clark confirmed the company briefed the Trump administration on its Mythos model, which the company says is too dangerous for public release due to powerful cybersecurity capabilities. The briefing occurred despite Anthropic's ongoing lawsuit against the Department of Defense over AI system access restrictions.

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benchmarkAnthropic

Claude Mythos achieves 73% success rate on expert-level hacking challenges, completes full network takeover in 3 of 10 a

The UK's AI Safety Institute reports Claude Mythos Preview achieved a 73% success rate on expert-level capture-the-flag cybersecurity challenges and became the first AI model to complete a full 32-step simulated corporate network takeover, succeeding in 3 out of 10 attempts. The testing occurred in environments without active security monitoring or defenders.

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product updateAnthropic

Anthropic adds scheduled routines to Claude Code, runs on cloud infrastructure without local machine

Anthropic launched repeatable routines for Claude Code in research preview, allowing developers to schedule automated tasks that run on cloud infrastructure without requiring their local machine to be online. Pro users get 5 daily routines, Max users get 15, and Team/Enterprise users get 25.

1 min readvia 9to5mac.com
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product update

Google expands Gemini Personal Intelligence globally, accessing Gmail, Drive, Photos for contextual responses

Google is rolling out Personal Intelligence to Gemini users globally, excluding the European Economic Area, Switzerland, and UK. The opt-in feature accesses data from Gmail, Calendar, Drive, Google Photos, YouTube, Maps, and other first-party apps to provide contextual responses without additional prompting.

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model releaseAnthropic

Anthropic restricts Claude Mythos access, exposing Europe's lack of AI safety infrastructure

Anthropic is restricting access to Claude Mythos Preview, a model the company claims can find security vulnerabilities better than most humans, to 52 technology partners. While the UK's AI Security Institute has already tested Mythos and published findings, most European cybersecurity agencies have limited or no access, revealing a structural gap in Europe's AI safety evaluation capacity.

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product updateAnthropic

Anthropic's Claude experiences outage as GitHub issues citing quality concerns surge 3.5× since January

Anthropic's Claude.ai and Claude Code suffered a 48-minute outage on April 13, 2026, from 15:31 to 16:19 UTC with elevated error rates. GitHub quality complaints have increased 3.5× from the January-February baseline, though SWE-Bench-Pro scores show no substantive change since February.

2 min readvia go.theregister.com
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model releaseOpenAI

OpenAI internal memo reveals 'Spud' model, 'Frontier' agent platform, and accuses Anthropic of $8B revenue inflation

An internal memo from OpenAI Chief Revenue Officer Denise Dresser outlines a new model codenamed 'Spud' for improved reasoning and production reliability, an agent platform called 'Frontier,' and expanded Amazon partnership. The memo also accuses Anthropic of inflating its $30B run rate by roughly $8B through gross revenue accounting.

3 min readvia the-decoder.com
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product updateMicrosoft

Microsoft developing local AI agent to compete with open-source OpenClaw

Microsoft is testing OpenClaw-like features for Microsoft 365 Copilot aimed at enterprise customers, the company confirmed to The Information. The agent would run continuously to complete multi-step tasks over extended periods, distinguishing it from Microsoft's existing cloud-based agents like Copilot Cowork and Copilot Tasks.

2 min readvia techcrunch.com
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research

LPM 1.0 generates 45-minute real-time lip-synced video from single photo, no public release planned

Researchers have introduced LPM 1.0, an AI model that generates real-time video of a speaking, listening, or singing character from a single image, with lip-synced speech and facial expressions stable for up to 45 minutes. The system integrates directly with voice AI models like ChatGPT but remains a research project with no planned public release.

2 min readvia the-decoder.com