Frontier AI labs have settled into a near-monthly release cadence: a new model, agent, or interface makes last quarter's frontier feel like legacy infrastructure. This week's GPT-5.6, GPT-Live, ChatGPT Work, Grok 4.5, and Muse Spark 1.1 reveal a shift. The model is becoming a runtime, the chat window a control plane, and 'answering' is giving way to execution. GPT-5.6 makes that transition explicit. OpenAI split the family into Sol, Terra, and Luna, optimizing for intelligence and performance per dollar. The geekiest feature is programmatic tool calling, which lets the model write programs to coordinate tools and process intermediate results. Add parallel subagents, and inference starts looking less like autocomplete and more like distributed systems engineering. GPT-Live attacks another bottleneck: the turn-based interface. Its full-duplex architecture can listen and speak simultaneously, decide when to interrupt or remain silent, and delegate deeper reasoning while keeping the...
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