Claude Opus 5.5 drops, GPT-6 gets cheaper, and Muse can shop for you

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Anthropic released Claude Opus 5.5, beating Fable 5.1 on benchmarks, writing better, and costing less than Opus 5. Claude Code's 5-hour limit increased 20% and cloud sessions are now generally available. OpenAI cut GPT-6 Luna and Sol prices by 50%—$0.10/$0.50 and $2/$10 per million input/output tokens—but the intelligence bump is minor; Sol trails Opus 5.5 clearly. At Meta Connect, Muse gained the ability to use any Mac app, shop via Walmart, Best Buy and Sephora, and will get its own email address; it's also coming to glasses and a Tamagotchi-like keychain. Google launched Gemini 3.8 Flash and Flash-Lite TTS at half the price of 3.1 Flash TTS, with 100+ languages and voice cloning. Separately, Claude found a novel enzyme system in bacteriophage DNA—nobody knows what it does yet, and reruns sometimes miss it.

Why it matters: Anthropic ships Opus 5.5, a flagship model that beats Fable 5.1 on benchmarks and costs less than Opus 5, plus Claude Code limit bump and cloud sessions. OpenAI cuts GPT-6 Luna/Sol prices by half the same day, creating a direct competitive contrast. Together these form the day...