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A mathematics olympiad goes from 5% to 95% in twelve months

development2026-03-29

Claim

Models scored below 5% on USAMO 2025, and GPT-5.4 scored 95% on the 2026 exam, saturating the benchmark in twelve months.

Reported metric: <5% → 95%

Reporting date: 2026-03-29 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

Welcome to March 29, 2026 (theinnermostloop.substack.com)

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Reported in

Welcome to March 29, 2026

Actor

OpenAI

Evidence for

Supersedes

Problems are removed from a benchmark for being insufficiently notable

Referenced by

Cite or correct this record

Citation formatCitation text

A mathematics olympiad goes from 5% to 95% in twelve months
Innermost Loop KB — secondary record
Reporting date: 2026-03-29
KB permalink: https://nicholsn.github.io/innermost-loop-kb/developments/2026-03-29-usamo-saturated-in-a-year
Claim: Models scored below 5% on USAMO 2025, and GPT-5.4 scored 95% on the 2026 exam, saturating the benchmark in twelve months.
Attributed sources:
- Welcome to March 29, 2026 — https://theinnermostloop.substack.com/p/welcome-to-march-29-2026
This citation does not imply independent verification of linked-source claims.

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