Today we're introducing the LLM Stats Index. For 3.2 years, we've tracked every frontier model release. The Index aggregates 200 benchmark results into a single TrueSkill rating per model, spanning law, healthcare, coding, tool calling, vision, and reasoning. Across every category and every modality, the leading model on the Pareto Frontier is GPT-5.5 (@OpenAI). On our trajectories, human-knowledge benchmarks saturate by mid-2027. Capability has been the primary axis. The field is converging on it. Two more are opening. The first is efficiency: total task cost is the cleanest proxy we have for intelligence/watt. The second is throughput: inference speed becomes the productivity ceiling once models are cheap and good enough. We're building the next generation of long-horizon coding, tool use, and long context benchmarks. If you're working on long-horizon evaluation in real domains, we'd like to chat.