GPT-5.3 — benchmark results

Provider: OpenAI. Released 2026-03-03. Access: API.

Unified ELO 1782 ± 8, rank #75 of 1488 rated models, from 258 benchmark results.

Interactive version: theaggregate.ai/model?slug=gpt-5-3 · How the rankings work · Data refreshed daily, snapshot 2026-07-22.