This market will resolve to the highest 50% time horizon, as reported by METR, for Claude Opus 4.6

50% time horizon is a measure of AI autonomy based on the length of tasks that AI can do: roughly, it is the time that humans take to complete tasks that an AI system can successfully do 50% of the time. See METR's "Measuring AI Ability to Complete Long Tasks" for the technical definition. Claude 3.7 Sonnet, released in February 2025, was the leading model with a 50% horizon of 59 minutes.

Left bounds inclusive, right bounds exclusive.

See also:

/jim/gpt-52-metr

/Bayesian/gpt-52-pro-metr-time-horizon

/Bayesian/gemini-3s-50-time-horizon-per-metr

/Bayesian/gemini-3-pro-metr-50-time-horizon

/Bayesian/claude-sonnet-46s-metr-50-time-hori

/Bayesian/claude-sonnet-5-metr-50-time-horizo

/Bayesian/claude-opus-5-metr-50-time-horizon

/Bayesian/grok-420s-metr-50-time-horizon

/Bayesian/grok-5s-50-time-horizon-per-metr

/Bayesian/r2s-50-time-horizon-per-metr

/Bayesian/kimi-k3-thinkings-metr-50-time-hori