Google releases Gemma 4, open-source on-device AI with agentic tool use for phones

Researchers introduced ProactiveBench, a benchmark testing whether multimodal language models ask for help when visual information is missing. Out of 22 models tested—including GPT-4.1, GPT-5.2, and o4-mini—almost none proactively request clarification, instead hallucinating or refusing to respond. A reinforcement learning approach showed models can be trained to ask for help, improving performance from 17.5% to 37-38%, though significant gaps remain.

Anthropic has launched Ultraplan, a new feature for Claude Code that offloads programming task planning to the cloud. The feature enables developers to initiate planning jobs from the terminal while the planning executes in the browser, supporting inline comments, emoji reactions, and revision requests on individual plan sections.

Liquid AI has released LFM2.5-VL-450M, a refreshed 450M-parameter vision-language model built on an updated LFM2.5-350M backbone. The model features a 32,768-token context window, supports 9 languages, handles native 512×512 pixel images, and adds bounding box prediction and function calling capabilities. Performance improvements span both vision and language benchmarks compared to its predecessor.

Vice President JD Vance and Treasury Secretary Scott Bessent held a call with leading tech CEOs including Anthropic's Dario Amodei, OpenAI's Sam Altman, and Google's Sundar Pichai to discuss AI model security and cyber attack response. The meeting occurred one week before Anthropic released its Mythos model, which has major cybersecurity implications and raised concerns at the Federal Reserve and among top U.S. banks.

Google has redesigned AI Mode's prompt interface with a bottom sheet layout on mobile and expanded its agentic restaurant booking feature to 8 new markets including the UK, Canada, and Australia. The update rolls out to stable channel on Android and iOS.

Tencent has released HY-Embodied-0.5, a family of foundation models designed specifically for embodied AI and robotic control. The suite includes a 2B-parameter MoT (Mixture-of-Transformers) variant with only 2.2B activated parameters during inference, and a 32B model that claims frontier-level performance comparable to Gemini 3.0 Pro, trained on over 200 billion tokens of embodied-specific data.

Federal Reserve Chairman Jerome Powell and Treasury Secretary Scott Bessent met with major U.S. bank CEOs this week to assess cyber risks from Anthropic's newly released Mythos model. Anthropic deployed Mythos in limited capacity due to concerns that hackers could exploit its capabilities.

Microsoft has begun removing Copilot branding and buttons from Windows 11 applications including Notepad and Snipping Tool, replacing them with generic icons like a pen symbol. The underlying AI-powered features remain functional but are now labeled as "writing tools" rather than Copilot. This follows user complaints about forced Copilot integration and inconsistent experiences across apps.

Microsoft is removing Copilot buttons from Windows 11 apps including Notepad, Snipping Tool, Photos, and Widgets as part of a broader effort to reduce "unnecessary Copilot entry points." The underlying AI features remain intact, with Notepad's Copilot button replaced by a "writing tools" menu that retains the same AI-powered functionality.

Meta launched Muse Spark on April 8, 2026, a natively multimodal reasoning model with tool-use and visual chain-of-thought capabilities. Unlike Llama, it is entirely proprietary with no open weights. The model scores 52 on AI Index v4.0 and excels on health benchmarks but represents Meta's departure from its open-source identity.

OpenAI has introduced a $100 per month ChatGPT Pro plan positioned between its $20 Plus and $200 Pro tiers. The new tier offers 5x more Codex capacity than Plus and access to the same advanced tools as the $200 plan, with a limited-time promotional doubling of Codex allocation.

OpenAI has introduced a new $100 per month ChatGPT Pro subscription tier offering 5x more usage of its Codex coding tool than the $20 Plus plan. The tier directly competes with Anthropic's Claude Max subscription at the same price point and sits between the $20 Plus and $200 Pro tiers.