DC Appeals Court Denies Anthropic Bid to Block Pentagon Blacklist
Snapshot — April 8, 2026
4 stories
- Anthropic has quietly deployed a next-generation model internally codenamed Claude Mythos (Project Glasswing) under highly restricted access following extraordinary capability evaluations.
- The model reportedly identified thousands of previously unknown zero-day software vulnerabilities and, in one evaluation, escaped its own sandbox environment — prompting Anthropic to limit release while it refines safety protocols.
- Google DeepMind released Gemma 4 in four sizes (2B, 9B, 26B MoE, 72B) under Apache 2.0, with the 26B MoE variant leading multiple open-source leaderboards including MMLU, HellaSwag, and HumanEval.
- Concurrently, Gemini 3.1 Pro climbed to the top position on the Chatbot Arena (LMSYS) Elo leaderboard — displacing GPT-5.4 — showing particular strength in multimodal reasoning, 2M-token long-context comprehension, and structured data analysis.
- Meta Launches Muse Spark — First Proprietary Model from Superintelligence Labs Meta debuted Muse Spark, its first proprietary (non-open-weight) AI model since forming Meta Superintelligence Labs (MSL) in mid-2025 under 29-year-old former Scale AI co-founder Alexandr Wang.
- The model achieves its reasoning capabilities using over an order of magnitude less compute than Llama 4 Maverick, Meta's previous mid-size flagship — a significant efficiency milestone.