not much happened today

**Meta's Muse Spark 1.2** rapidly rose to frontier-tier with top 5 ranking on Vals Index at **$0.69/test**, being **3x cheaper than Kimi** and **10x+ cheaper than Fable, Opus, and 5.6 Sol**. It achieved **gold-medal-level performance in five STEM Olympiads** with perfect theory scores in APhO and IPhO, emphasizing *"no tools"* and multi-agent orchestration. Meanwhile, **OpenAI unified its ChatGPT models under GPT-5.6 Sol**, introducing a reasoning-effort slider and expanding free-tier access with **unlimited text chats on GPT-5.6 Luna**. OpenAI also launched **Agent Plugins**, an open standard for bundling agent skills, supported by partners like **AWS, Cursor, GitHub, and Vercel**. These developments highlight a shift towards combining model quality, orchestration, pricing, and serving capacity as key adoption factors.