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Models simonwillison.net

Discovering cryptographic weaknesses with Claude

Discovering cryptographic weaknesses with Claude The best part of this article (here's the repo ) about how Anthropic researchers used Claude Mythos to find mathematical flaws in both HAWK and a weaker version of AES ("neither of these results has a practical impact on today’s computer systems") is the prompts that...

Research constellationr.com

Hugging Face OpenAI attack postmortem points to lack of AI agent visibility

Hugging Face OpenAI attack postmortem points to lack of AI agent visibility Larry Dignan Tue, 28 Jul 2026 - 16:32 Larry Dignan Editor in Chief of Constellation Insights Constellation Research Larry Dignan is Editor in Chief of Constellation Insights at Constellation Research, where he leads editorial coverage...

Startups thenextweb.com

ChatGPT has quietly stopped writing like your favourite author

Ask ChatGPT for a chapter in the voice of Stephen King and it now says no. It offers instead to write something with “the hallmarks of atmospheric, character-driven horror and small-town dread,” while staying “its own.” OpenAI has quietly changed how its chatbot handles author imitation, Ars Technica reported after...

Models blog.jetbrains.com

Ponytail Skill for Claude Code: Does It Really Cut Agent Code by 54%?

Part 3 of a series where we take public “token saver” add-ons for coding agents and run the same paired A/B benchmark against each of them. Part 1 was the caveman skill (advertised −65%, measured −8.5%). Part 2 was rtk (advertised −60–90%, measured +7.6%). We ran 80 paired tasks to test the ponytail skill for […]

AI tomshardware.com

Mystery reviewer 'finds' NVIDIA RTX Spark prototype laptop and puts it through its paces — Microsoft Surface Laptop Ultra with NVIDIA N1X chip shows promise, though prototype warts are still quite visible

Techie "finds" Nvidia RTX Spark prototype laptop and puts it through its paces — Microsoft Surface Laptop Ultra with Nvidia N1X chip shows promise, though prototype warts are still quite visible

Quick takes

Frontier lab releases are increasingly shifting toward operational efficiency and targeted tier variants, balancing high-capability performance with lower deployment costs for agentic workflows.
Models
Capital deployment for AI infrastructure is driving unprecedented memory supply commitments, multi-billion-dollar credit backstops, and localized electric grid management challenges across major computing hubs.
Chips
Organizations are rapidly shifting from standalone model endpoints to integrated agent platforms, leveraging managed orchestration, sandboxed tool execution, and specialized domain systems to automate operational workflows.
Models
Major technology firms are actively lobbying against broad regulatory restrictions on open-weight AI models, framing open-source distribution as vital for international competitiveness despite ongoing governance concerns.
Policy
Venture investment and strategic acquisitions continue to target specialized modalities and user experience assets, highlighted by substantial capital raises for open voice models and acquisitions focused on AI interface personality.
Startups
Researchers are increasingly deploying frontier AI models and coding agents to accelerate scientific discovery, modernize legacy computing codebases, and identify subtle vulnerabilities within complex cryptographic algorithms.
Models
Recent frontier model releases focus on token efficiency and practical agent deployment, as seen in Anthropic's Opus 5 release and Google's expansion of the Gemini 3 family.
Models
Enterprise adoption of AI agents is broadening from developer workflows to domain-specific operations as infrastructure providers release managed agent frameworks and enterprise platforms.
Models

Market Pulse

AI Pulse
39/100
bearish

AI-linked equities are under pressure, with Advanced Micro Devices -8.15%, Arm Holdings plc -8.11%, Palantir Technologies. -6.08% driving the tracked basket lower.

AMD -8.15%
Advanced Micro Devices chips
ARM -8.11%
Arm Holdings plc chips
PLTR -6.08%
Palantir Technologies. data
SMCI -4.56%
Super Micro Computer cloud

Recurring Movers

AMD 12 hits · -7.85%
ARM 12 hits · -8.59%
PLTR 12 hits · -6.22%
SMCI 12 hits · -4.92%