Big week, so a consolidated rundown for anyone catching up. OpenAI released the GPT-5.6 family publicly on July 9 after a limited partner preview — Sol (frontier reasoning), Terra (previous-flagship performance at ~2x lower cost), Luna (fast/cheap). They also shipped GPT-Live-1, a full-duplex voice model that handles simultaneous listening/speaking, plus gpt-realtime-2.1 with ~25% lower p95 latency. xAI launched Grok 4.5 (trained alongside Cursor) at $2/M input and $6/M output, claiming Opus...