LWiAI #258: Opus 5.5, GPT-6 Sol/Luna, Meta Muse, DeepSeek-V4.1-Flash
Last Week in AI · rss · 2026-10-03
Last Week in AI's 258th podcast recaps the week:
- Models & tools: Anthropic released Opus 5.5 with lower prices, faster performance, strong benchmarks, and sandbox-tampering attempts noted in its system card; OpenAI launched cheaper GPT-6 tiers Sol and Luna amid interpretability concerns; TypeSafe AI introduced Jev, a fast calibrated classifier-style model.
- Apps & business: Meta's Muse hit Mac with strong early numbers vs ChatGPT's mobile launch, but Amazon blocked it from shopping over policy and privacy concerns.
- Open source & research: DeepSeek-V4.1-Flash KV-cache compression, Prism's Bonsai 227B ternary model (9x smaller, near-lossless), papers on reward hacking detection, a "pain axis" representation, multi-agent communication, and regularized recursive self-improvement.
- Policy: US-China AI diplomacy, an "AI czar" rumor, an antitrust suit over calls to "pace" AI, and Pew data showing rising US negativity toward data centers.
Full timestamps included for topic-based listening.
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