METR's research reveals a consistent, exponential trend in AI capabilities over the last five years. When measured by the length of tasks an AI can complete (based on human completion time), this 'time horizon' has been doubling approximately every seven months, providing a single, robust metric for tracking progress.

The surprisingly smooth, exponential trend in AI capabilities is viewed as more than just a technical machine learning phenomenon. It reflects broader economic dynamics, such as competition between firms, resource allocation, and investment cycles. This economic underpinning suggests the trend may be more robust and systematic than if it were based on isolated technical breakthroughs alone.

While the 'time horizon' metric effectively tracks AI capability, it's unclear at what point it signals danger. Researchers don't know if the critical threshold for AI-driven R&D acceleration is a 40-hour task, a week-long task, or something else. This gap makes it difficult to translate current capability measurements into a concrete risk timeline.

Instead of a single "AGI" event, AI progress is better understood in three stages. We're in the "powerful tools" era. The next is "powerful agents" that act autonomously. The final stage, "autonomous organizations" that outcompete human-led ones, is much further off due to capability "spikiness."

A key metric for AI progress is the size of a task (measured in human-hours) it can complete. This metric is currently doubling every four to seven months. At this exponential rate, an AI that handles a two-hour task today will be able to manage a two-week project autonomously within two years.

The future of AI is hard to predict because increasing a model's scale often produces 'emergent properties'—new capabilities that were not designed or anticipated. This means even experts are often surprised by what new, larger models can do, making the development path non-linear.

Unlike COVID's growth, which had a hard population limit, AI's potential is tied to energy and computation, which have vast room to expand. However, its real-world application will manifest as a series of S-curves, as different technologies and industries hit temporary plateaus before the next breakthrough occurs.

Criticizing AI developers for being a few months off on predictions is a distraction. The underlying trend is one of exponential growth. Like criticizing Elon Musk's Mars timeline while ignoring his historic rocket launches, it's a failure to grasp the scale and direction of the technological shift that is already happening.

Third-party tracker METR observed that model complexity was doubling every seven months. However, a recent proprietary model shattered this trend, demonstrating nearly double the expected capability for independent operation (15 hours vs. an expected 8). This signals that AI advancement is accelerating unpredictably, outpacing prior scaling laws.