GPT-5.3: benchmark results
Provider: OpenAI. Released 2026-03-03. Access: API.
Unified ELO 1667 ± 1, rank #102 of 1392 rated models, from 277 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| Evals for Every Language - Language eu | 69.97 | Average Score (%) | 98.6 |
| Evals for Every Language - Language as | 67.23 | Average Score (%) | 97.1 |
| Evals for Every Language - Language bn | 72.38 | Average Score (%) | 97.1 |
| Evals for Every Language - Language gn | 64.45 | Average Score (%) | 97.1 |
| Evals for Every Language - Language ku | 66.86 | Average Score (%) | 97.1 |
| Evals for Every Language - Language mi | 69.21 | Average Score (%) | 97.1 |
| Evals for Every Language - Language mr | 73.44 | Average Score (%) | 97.1 |
| Evals for Every Language - Language ak | 58.7 | Average Score (%) | 95.7 |
| Evals for Every Language - Language bs | 74.27 | Average Score (%) | 95.7 |
| Evals for Every Language - Language fo | 57.71 | Average Score (%) | 95.7 |
| Evals for Every Language - Language ky | 68.87 | Average Score (%) | 95.7 |
| Evals for Every Language - Language lg | 61.08 | Average Score (%) | 95.7 |
Interactive version: theaggregate.ai/model?slug=gpt-5-3 · How It Works · Data refreshed daily, snapshot 2026-09-05.