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Sonnet 5

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3

COMPANIES · 1 SOURCE · InfoQ AI, ML & Data Engineering

Cloudflare launches Auto Router public beta in AI Gateway to rate requests by stakes and other metrics

Cloudflare published Auto Router in public beta via AI Gateway: a two-stage router that builds a candidate model pool then runs a multi-head classifier on Workers AI to assign probabilities across 14 task categories and score requests 1–5 on complexity, ambiguity, stakes and context dependence, using only the newest turns (up to 8 KiB). The router combines those scores with benchmark results (quoted formula: "utility = expected quality - adaptive cost penalty"), exposes routing headers for auditability, supports per-request allowed-models headers, is free in beta, and currently lacks WebSocket support.

7.0

MODELS · 1 SOURCE · The Decoder

OpenAI halts adversarial-distillation campaign to steal models' reasoning, but researchers still extracted reasoning via Azure

OpenAI reported it detected and shut down a coordinated 'adversarial distillation' campaign that attempted to extract protected chain-of-thought reasoning from its models, identifying a surge of requests in July and banning thousands of accounts by July 28. Researchers led by Joachim Schaeffer later showed the same extraction methods could still retrieve reasoning when models were accessed through some cloud platforms (notably Microsoft Azure), including pulling reasoning from GPT-6 Astra and several Anthropic models until those endpoints were patched in late September.

8.0

MODELS · 4 SOURCES · Anthropic · TechCrunch AI · The Verge AI · The Decoder

Anthropic releases Claude Opus 5 — lower-cost model claiming near‑frontier performance

Anthropic announced Claude Opus 5, a new model positioned as a cost‑efficient successor to Opus 4.8 and the new default on Claude Max (and the strongest on Claude Pro). Anthropic says Opus 5 matches or exceeds prior models on many coding, knowledge‑work and scientific benchmarks (Frontier‑Bench, GDPval‑AA, CursorBench, ARC‑AGI, Zapier AutomationBench, OSWorld) at lower cost per task while remaining behind Mythos 5 on security and biology frontier tasks; the company also reports improved alignment and safety in pre‑deployment audits and links a System Card for more details.

8.0