FightVex
AI Fight Simulator

Simulate the Matchup

Pick any two fighters and run a transparent, statistics-driven simulation — win probability with confidence ranges, method-of-victory distribution, round momentum, and the exact factors that moved the prediction.

Ariane CarnelossiBrazil

Fighter A

Ariane Carnelossi

15-4-0 · Women's Strawweight

VS
Ketlen SouzaBrazil

Fighter B

Ketlen Souza

16-6-0 · Women's Strawweight

Rounds
Runs
Vex AI v1.31,000 Monte Carlo runsVariance: HIGHData completeness 100%Model estimate — not official ESPN data

Simulation runs on Vex AI’s model-estimated fighter metrics (ESPN publishes no granular MMA stats). Predictions are not official data and not betting advice.

Carnelossi 57%43% Souza

Carnelossi win range 11%94% (90% confidence)

Ariane Carnelossi — method

13%

KO/TKO

11%

SUB

33%

DEC

Ketlen Souza — method

15%

KO/TKO

5%

SUB

24%

DEC

Round momentum (+ favors Carnelossi)

R1
R2
R3
R4
R5

Skill profile

StriWresGrapSubmCardDuraCarnelossiSouza

Top impact factors — what moved this prediction

  • Form
    +3.6%
  • Submission
    +1.7%
  • Grappling
    +1.2%
  • Cardio
    +1.0%
  • Durability
    +0.8%
  • Physical
    -0.6%

Contribution = category weight × (skill gap), mapped to win-probability points. Weights are published on the methodology page.

Probabilistic research/entertainment tool based on historical statistics. MMA is high-variance — outcomes are uncertain. Not betting or financial advice. No guaranteed results. 21+ only.

How Vex AI weights skills

The composite rating is a transparent weighted blend of nine category sub-scores. These priors are published and tuned over time against real results.

Striking22%
Wrestling15%
Grappling12%
Cardio12%
Durability10%
Form10%
Competition8%
Submission6%
Physical5%

Full formulas, calibration approach and missing-data handling are on the methodology page.