Frontier AI labs sign letter calling for paced development

The Vulkan backend commit (70c4e15) adds an int8 cooperative-matrix matmul path for AMD RDNA3 and RDNA4 GPUs. A user reports a massive performance improvement on a 7900XTX.

The 340M-parameter model takes text plus a schema of typed questions and returns structured answers, each with a probability distribution, confidence score, and constraint-feasibility metadata. It is open-weight and runs on CPU.

TestingCatalog reports the plan would add "Fastest Work and Codex" to ChatGPT Pro, with possibly higher usage limits, and may run on Cerebras infrastructure. OpenAI's pricing page lists only Free, Go, Plus, Pro, Business and Enterprise — no Pro Max.

A r/ChatGPT user reports ChatGPT is the first AI to render their prompt for a photorealistic, unsettling Tooth Fairy with rows of collected teeth in her mouth. No other models or comparisons are named.

A Reddit user orchestrated five AI agents through Claude Code to make "The Most Boring Movie Ever (Ever) Made," a 3:12 video with outtakes about a sock puppet named Gerald facing a beige wall for 7 hours 46 minutes. Total OpenRouter cost: $16.87.

M5 Ultra (30/64) with 96GB offers 1.2 TB/s bandwidth and roughly 1.7x faster generation plus faster prefill; M5 Max (40-core GPU) with 128GB runs 614 GB/s but adds 32GB memory and costs less.

The Emacs ACP client adds a writeable prompt that stays available while the agent works, queueing new submissions automatically, plus turn steering for in-flight prompts via the session/steering ACP extension. Two agents join: Antigravity and Qoder.