Bryan Caplan called it:

If the AI gets an A on at least 5 of out 6 of those exams using same grading scale as his students, then Bryan owes Matthew $500. Otherwise, Matthew owes Bryan $500. For the purpose of this bet, an A- counts as an A.

We find out by Jan 30, 2029. 893 days to go

Open

Bryan Caplan: “If the AI gets an A on at least 5 of out 6 of those exams using same grading scale as his students, then Bryan owes Matthew $500. Otherwise, Matthew owes Bryan $500. For the purpose of this bet, an A- counts as an A.

🔒 The test · locked Aug 22, 2026

MET if (An AI selected by Matthew Barnett, given one attempt at each of Bryan Caplan's six most recent midterm exams, receives a grade of A or A- from Bryan Caplan on at least 5 of the 6 exams, graded on the same scale he applies to his students. Grades below A- do not count; multiple attempts on the same exam do not count; exams excluded by the agreed arbitrator are replaced by Caplan's most recent preceding midterm and not (More than four exams in total are excluded from the pool by the agreed arbitrator, calling off the bet and returning Barnett's $500)) at any point, before 2029-01-30 23:59 (America/New_York).

Settles by documented review of public evidence against these locked criteria; the reviewer is named and the reasoning published.

Test details
Settled byevidence
Window2023-01-19 2029-01-30
TimezoneAmerica/New_York
Data vintagelatest_revision
Min source tier1
Contract hash0xeb3cec49…81f7d6
Full resolution criteria

Settled by Bryan Caplan's published grading of the exams: if, on or before January 30, 2029, an AI selected by Matthew Barnett takes Caplan's six most recent midterm exams (one attempt each) and receives a grade of A or A- from Caplan on at least 5 of the 6, under the same grading scale applied to his students, the condition is TRUE and Caplan owes Barnett $500; otherwise FALSE. Exams excluded by the agreed arbitrator are replaced per the stated terms; if more than four exams in total are excluded the bet is called off and the claim does not resolve.

Quote verified against the source

Bryan CaplanBet On It (Substack)Said Jan 19, 2023Added to Thonest Aug 22, 2026Anchored Aug 22, 2026

Added by Thonest from a public source. The person quoted did not submit, approve, or endorse this record; the wording is verified against the source itself.

Read the original on betonit.ai

Caplan lays out the agreed terms of his $500 bet with Matthew Barnett of Epoch AI about whether an AI can pass his economics midterms, with Caplan betting against.

History — append-only

2026-08-22
Recorded · Recorded and locked from the original source

Proof

Evidence hash0xcbd42c9a…71da2f
Source snapshot
Record fingerprint0xcbd42c9a262ab49d99ca0432ffb9d3977ddfc9000273a6a7215482293c71da2f
Proof path
2 hashes from this record to the anchored root
  1. 0xc017068311d533e4aa2406703e15b40e8fef105942838cfedde6a60b3393e050
  2. 0x27a0752110a0c62337f2e9a3844d088bdbc5f316b16b9b90f9070a242b94f347
Merkle root0x2270bec2ad4e2b5b2df8328fb0dcefa7d88ba06cca5dd3253980032d875118fd
batch #69 manifest · 4 entries
Registry0x3d74d9e2f0f4c741fc49b34cc119b6db0cef47c0 · entry #68
the contract refuses any batch that doesn’t follow the previous one, and has no function to edit or delete one — including for us
Anchored onchainbase-mainnet · Aug 22, 2026
0xefd39a08…291d38 on block explorer
Quote checkThe quote appears verbatim in the response the platform returned.
Platform capture0xa4db0363b62efe2473eb5123a6d683e0e61a77c194e764a482c09d8300c78c6e
view the canonical capture · the page as served to us, kept verbatim and covered by the evidence hash

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Related

Matthew BarnettEpoch AIAI exam performanceCaplan–Barnett AI bet