The doubling time for the METR time horizons has moved off the consistent 7 months from 2019-2024 to a new exponential doubling every 4 months at around the end of 2024.

(source: https://theaidigest.org/time-horizons)
Some causes, such as reasoning models, suggest this will revert to baseline. Others, such as AI accelerating research engineering strongly, suggest the trend will continue.
This is confounded by other possible phase transitions in research, but would still be an interesting part of the future to peer into.
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Here’s where I think this market stands:
o3 doubled o1 in April; <6months
Grok 4 doubled Claude 3.7 sonnet in July; <6months
GPT-5 doubled Claude 3.7 Sonnet in August; <6months
There has not been a 4 month period where the new SOTA failed to double any SOTA from <6months prior, so this market cannot resolve Yes at this time.
Currently, we are more than 6 months from the release of o3, so doubling that will be insufficient for this market. The next doubling will have to beat 2x Grok 4 110min and be released within 4 months of GPT-5 (August 7 -> December 7). Gemini 3.0 is the best bet here.
There has not been a 4 month period where the new SOTA failed to double any SOTA from <6months prior
How does the period since o3 not count? Nothing has doubled that sota to this day (7 months later)
@Usaar33 it doesn’t have to double the sota at release, it has to double sota from 6 months prior. GPT-5 did this, doubling Claude sonnet 3.7, resetting the 4 month counter. Something has always doubled the <6 month sota every 4 months or less. (This could happen as long as 10 months after the sota release if things line up)
Gemini 3 (or something else released before 12/7) will have to double sota from the previous 6 months (grok 4 110 minutes -> 220 minutes)
@Usaar33 just to be clear, I’m not the market creator, but they haven’t clarified the questions below.
Title says 6 month doubling time. GPT-5 showed a <6month doubling, so resets the 4 month counter. Market creator could’ve specified some calculation for an exponential fit or looking at the last two points or something, but outside that clarification, I think it has to be when the doublings happen.
@Mactuary The window to look back is 4 months, not 6 months. 6 month doubling time is simply a rate of progress -- it's akin to saying 12% monthly growth. GPT-5 was released 4 months after prior SOTA O3 (ok 3 months, 3 weeks) and showed far less than 12% monthly growth. No model within 4 months (or 7 for that matter) has doubled O3's score.
@plex could you specify
whether you mean the time series for 50% time horizon or for 80% time horizon (or either/both)
what calculation you will do to determine whether this resolves YES or NO
whether you would resolve before December 31 under any circumstances?
@Usaar33 o3 performed slightly above the 4 month trend line, so if you use that as a start you will find longer doubling time until GPT-5 compared to the general trend. I haven't done the calculations and I find this market somewhat unclear but I suspect that the o3 to GPT-5 growth rate is not sufficient for a yes solution