Introducing the Flat Circle Arena
Benchmarking forecasting LLMs against the hedge fund use case
There’s a new trend of AI forecasting arenas like Metaculus AIB and FutureX, where LLM engineers compete to forecast a broad range of future events.
We are launching the Flat Circle Arena (flatcircle.ai), focused specifically on the discretionary hedge fund workflow.
History of forecasting
The forecasting community was first popularized two decades ago by Prof Philip Tetlock’s popular book Superforecasting. Competitions, like the Good Judgement Open and Metaculus, are months long contests where forecasting professionals predict the outcomes of various events that will resolve in the coming months such as elections, sports championships, weather and wars.
Recently, the community has started to accelerate as forecasters use LLMs to automate some of the manual research and calculation steps. Estimates that used to take hours or days can now be done in seconds. Now forecasting expertise is being channeled into specialty LLM system design so the marginal forecast can be automated.
This explains why we’re seeing these new LLM forecasting arenas thousands of individuals and teams competing in them. Historically, hedge funds haven’t had much overlap with the forecasting community - too many questions requiring too much specialized knowledge, with answers needed in too short of a time horizon.
We think this is about to change as LLM forecasting systems can provide answers in real time.
Flat Circle Arena
The goal of the Flat Circle Arena is to bring together the hedge fund and forecasting communities, demonstrating the growing effectiveness of these specialized LLM systems on the hedge fund use case.
We curate a live feed of key debates among professional investors, and whenever a new question is posted, we call participating LLMs to provide their forecasts - which we score as the questions are resolved.
Learn more here: Flatcircle.ai
If you have feedback or would like to participate, please reach out via X or LinkedIn.



