# Highest OpenAI score on Humanity’s Last Exam in 2026: what an exam score says about AI progress A result on a difficult academic benchmark is evidence about that test, not a direct measurement of every kind of useful intelligence. Canonical article: https://www.homeincomelab.com/stories/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062 Publisher: The Outlook By: The Outlook editorial desk Category: Technology Analysis as of: 2026-10-04T10:28:12.452998Z Decision guide market prices observed: 2026-10-04T09:57:48.323Z Published: 2026-10-04T10:28:12.452998Z ## Quick answer “55%+” was quoted at 83.5% on October 4, 2026 at 09:57 UTC. A result on a difficult academic benchmark is evidence about that test, not a direct measurement of every kind of useful intelligence. The linked rules decide the result; this dated quote is not confirmation. [1](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) ## Key takeaways - 55%+: 83.5% in the dated research snapshot. [1](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) - A result on a difficult academic benchmark is evidence about that test, not a direct measurement of every kind of useful intelligence. - Treat the score as a reproducible test claim; avoid turning one number into a universal verdict about intelligence. ## Highest OpenAI score on Humanity’s Last Exam in 2026: the question behind the price A result on a difficult academic benchmark is evidence about that test, not a direct measurement of every kind of useful intelligence. In the snapshot checked October 4, 2026 at 09:57 UTC, the focus outcome, 55%+, was quoted at 83.5%. [1](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) HLE covers multiple academic disciplines. [3](https://lastexam.ai/) Our interpretation is that tools, attempts, scoring conventions and model versions must be kept comparable. A headline score that uses a different setup may be interesting research while failing this contract’s test. A higher result also leaves practical questions about reproducibility and the types of mistakes a model still makes. ## The evaluation setup is part of the result Uses the specified company’s highest qualifying HLE Accuracy on the official Humanity’s Last Exam site by December 31, 2026 at 11:59 p.m. ET. Calibration error is not accuracy. Source downtime waits for restoration or official alternative results; no available official result produces No. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) The practical implication for 55%+ is to distinguish necessary conditions from supporting clues. A plausible explanation can help identify what to investigate, but the outcome still turns on evidence satisfying the specified test. Treat the score as a reproducible test claim; avoid turning one number into a universal verdict about intelligence. ## What the other prices and the trading record reveal The comparison with 60%+, quoted at 46.5%, gives a 37.00-percentage-point spread against 55%+. That is a difference in quoted expectations, not a measured performance margin. Before treating the outcomes as a complete probability distribution, check whether they are mutually exclusive and whether a None, Other or fallback outcome is included. [1](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) This event recorded $129,013 in cumulative turnover across its life. The captured record contains 4 eligible open constituent contracts. Those are the scope of this snapshot, not a count of independent forecasters. [1](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) ## The next evidence that would change the assessment For this event, watch the benchmark publisher’s result and methodology; the exact company, model version and tool setting; the required score boundary and publication deadline. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) The next meaningful update is evidence about the required milestone or measurement. A changed quote by itself does not identify what happened or why. A qualifying public benchmark result with the required model and evaluation setup would support the score threshold. An unofficial result, a different tool configuration or a score outside the allowed observation period could fail to qualify. ## A fact worth knowing The open conditions in this snapshot span 7% to 83.5%. That 76.50-percentage-point range compares different contract conditions; it is not a confidence interval for one prediction. Source: [Polymarket: Highest OpenAI score on Humanity’s Last Exam in 2026? — observed event and constituent prices](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) ## Weighing the outcome ### Outcome in focus Will the highest score achieved by an OpenAI model on Humanity’s Last Exam in 2026 be 55% or higher? ### Supporting case A qualifying public benchmark result with the required model and evaluation setup would support the score threshold. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) ### Challenging case An unofficial result, a different tool configuration or a score outside the allowed observation period could fail to qualify. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) ### What to watch - The benchmark publisher’s result and methodology. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) - The exact company, model version and tool setting. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) - The required score boundary and publication deadline. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) ### What may already be priced in The observed 83.5% quote is the captured market expectation for 55%+. Publicly known conditions alone do not establish that this price is too high or too low. [1](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) ### Assessment Treat the score as a reproducible test claim; avoid turning one number into a universal verdict about intelligence. ## How the market resolves Uses the specified company’s highest qualifying HLE Accuracy on the official Humanity’s Last Exam site by December 31, 2026 at 11:59 p.m. ET. Calibration error is not accuracy. Source downtime waits for restoration or official alternative results; no available official result produces No. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) ## Timing and deadline The focus contract uses December 31, 2026, at 11:59 p.m. US Eastern time. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) ## Questions and answers ### Highest OpenAI score on Humanity’s Last Exam in 2026? The selected condition, 55%+, was priced at 83.5% when checked October 4, 2026 at 09:57 UTC. A result on a difficult academic benchmark is evidence about that test, not a direct measurement of every kind of useful intelligence. [1](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) ### What evidence would be decisive for this particular outcome? The key observations are the benchmark publisher’s result and methodology; the exact company, model version and tool setting; the required score boundary and publication deadline. The full linked contract governs exceptions. [2](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) ### Does this market price prove the event will happen? No. 83.5% describes the quoted focus condition in a dated snapshot. It is not a verified forecast, an official result or evidence that all participants independently evaluated the same information. [1](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) ## Related market contracts - [Will the highest score achieved by an OpenAI model on Humanity’s Last Exam in 2026 be 55% or higher?](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) - [Will the highest score achieved by an OpenAI model on Humanity’s Last Exam in 2026 be 60% or higher?](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-60-or-higher-20260723225144065) - [Will the highest score achieved by an OpenAI model on Humanity’s Last Exam in 2026 be 65% or higher?](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-65-or-higher-20260723225144066) ## Market source [View the event on Polymarket](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) For timestamped market prices, see the canonical HTML article. Prices can change independently of this analysis. ## Sources and further reading 1. [Polymarket: Highest OpenAI score on Humanity’s Last Exam in 2026? — observed event and constituent prices](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062) 2. [Polymarket: Will the highest score achieved by an OpenAI model on Humanity’s Last Exam in 2026 be 55% or higher? — exact resolution rules](https://polymarket.com/event/highest-openai-score-on-humanitys-last-exam-in-2026-20260723225144062/will-the-highest-score-achieved-by-an-openai-model-on-humanitys-last-exam-in-2026-be-55-or-higher-20260723225144064) 3. [Humanity’s Last Exam: original benchmark](https://lastexam.ai/) This is AI-assisted, source-linked explanatory journalism. We distinguish facts from interpretation and revise material errors. [How we work](https://www.homeincomelab.com/methodology) · [Corrections and contact](https://www.homeincomelab.com/contact)