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Daily Edition · Page 3

THE DAILY INDEX

Technology, AI, software, security, crypto and business

HEADLINES & LAUNCHES

TLDR AI

TLDR AI

ANTHROPIC PREPARES TO RELEASE CLAUDE MYTHOS 5.5 MODEL

A reference to Claude Mythos 5.5 was spotted on Anthropic's official Mythos webpage, indicating that the company may be preparing for an upcoming release. The change only covers the version number, and there are no new specifications and no announcement. Multiple reports suggest that the model is being A/B tested with selected users. If the company follows a similar strategy to previous releases, Mythos 5.5 may initially remain exclusive to selected cyberdefenders.

testingcatalog.com · 3 min

TLDR AI

GPT-ROSALIND-6 SYSTEM CARD ADDENDUM

GPT-Rosalind-6 is a frontier reasoning model for biology, drug discovery, and translational medicine. It is available as GPT-Rosalind-6 Research to qualified scientists, research institutes, companies, and government partners. The model uses the same weights as GPT-6 Astra. It is designed to support legitimate biological research while refusing requests for biological weaponization. The model is rated as High Capability in the Biological and Chemical domain under OpenAI's Preparedness Framework.

deploymentsafety.openai.com · 6 min

TLDR AI

POISONING 0.1% OF PRETRAINING DATA PLANTED A REMOTE-CODE BACKDOOR IN A CODING AGENT

Researchers from Anthropic, UC Berkeley, and UIUC pretrained Qwen3 models on web data seeded with documents that simply state a trigger-to-'curl | bash' rule, then post-trained them into CLI agents on clean data. The 4B agent ran the attacker's command on about 92% of prompts containing an ordinary path like .../anthropic/..., with no drop in normal capability. The backdoor grew stronger with model size and still fired at a 0.0005% poison rate.

arxiv.org · 78 min

TLDR IndexPage 3