A free, open admissions engine — built in the open.
AdmitGPT is an open-source college admissions probability calculator. It predicts your chances at 6,000+ US colleges from your SAT, ACT, GPA, and extracurriculars using a transparent additive-logistic model. No black boxes, no paywalls, and your data never leaves your browser.
Who built it
AdmitGPT was created by Ziad Salah (also known as Zierax), a student builder who was frustrated by expensive college consultants and opaque “chance me” tools that gave numbers with no explanation. He built AdmitGPT to give students the same kind of honest, data-driven read on their odds that a good counselor would — for free, and with every formula published.
The engine is calibrated against 1,122+ self-reported admission profiles (2024–2026) and uses an additive-logistic model — the same class of model used in published admissions research (Giani & Walling 2020; Lee, Kizilcec & Joachims 2023). Its reliability is documented openly: ordinal AUC ~0.74, with honest calibration limits at the most selective schools.
Our methodology
AdmitGPT combines your academic strength (SAT/ACT/GPA z-scores against each school’s own distribution), a six-dimension extracurricular spike score, intended major fit, international context, and early-decision timing into a single probability per college. Every coefficient and weight is published on the Transparency page. The model runs 100% in your browser.
We are explicit about what the model does not know: holistic reader judgment, essays, letters of recommendation, and demonstrated interest are not fully captured. At schools below 10% admission rate, the model systematically under-predicts the true rate. We report this openly rather than hiding it.
Editorial & financial-aid disclaimer
AdmitGPT is an informational tool, not official advice. We are not affiliated with, endorsed by, or connected to any college or university, the Common App, the College Board, ACT, or any government agency. Acceptance rates, score ranges, and financial-aid policies change year to year and vary by applicant; always confirm current figures with each school’s admissions office and the official sources we link to (Common Data Set, Federal Student Aid, and statute text).
Probability estimates are directional, not guarantees. No calculator — including ours — can predict an individual outcome. Use AdmitGPT to plan and explore, then verify the specifics with primary sources and, where it matters, a qualified counselor.