Grok 4.6 Debuts with GPT-5.6 Sol and Claude Fable 5 Parity
SpaceXAI releases Grok 4.6, claiming GPT-5.6 Sol–level intelligence and Claude Fable 5 parity, with improvements for long-running tasks, coding, and knowledge work; it cites a longer training run, stronger engineering data, expanded reinforcement learning, pricing from $2 per million tokens, and availability via Cursor, Grok Build, and API, plus benchmark gains across CursorBench, FrontierCode, APEX-Agents, and Terminal-Bench.