GPT-5.3 Codex

AI model by OpenAI

Creator: OpenAI
Overall score: 66.16 (BenchLM)
Snapshot rank: #25 of 50
Data source: benchlm-models
Catalogued: August 30, 2026
Score page: https://benchlm.ai/models/gpt-5-3-codex

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Catalogue entry from the RL Engineering daily scrape of public sources. Data reflects the 2026-08-30 snapshot.