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Cerebras CS-4 turns Nexus into a multi-generation rack-scale inference platform

CS-4 combines three WSE-3 Turbo wafers with Cerebras’ Nexus rack design. The practical shift is architectural: compute, power and I/O become modular, while Cerebras now says the same platform is intended to support CS-5 in 2027 and a 3D-memory CS-6 generation after that.

Google will extract landing-page images for new Performance Max campaigns by default — even when accounts opt out

Google is changing the default for Performance Max image extraction on December 4, 2026. Existing campaigns keep their settings, but new campaigns will opt in regardless of an account-level opt-out; agencies and SaaS ad tools need a campaign-level override and careful handling of repeated asset settings.

Cloudflare and OpenAI test edge signals that put hundreds of millions of pages into ChatGPT search

Cloudflare supplies page-discovery and change signals; OpenAI independently evaluates and ranks discovered pages. The experiment is limited, respects crawler permissions, and is not a new general opt-in indexing service or a guarantee of traffic.

GPT-6 Astra reaches broad API rollout with 1.05M context — and enterprise computer-use controls

Astra's adoption question is no longer only model capability. Builders can now model its long-context economics and task-level efficiency, while enterprises get a more explicit control plane for computer use. The same release also raises the cyber-safety boundary: OpenAI says Astra is its first model to reach the Preparedness Framework's Critical cybersecurity capability threshold.