GPT-5 Codex
openai/gpt-5-codex- OpenAI
- Family · GPT-5 Codex
- Released 23 Sep 2025
Not on OSMEXO yet
Scores · standing
Intelligence24.9#98/490
News & trends
News · latest from OpenAI
- GPT-6.1 Terra vs. Claude Opus 5.5: Cheaper and faster in three tests at maxthenewstack.io · 2 Nov
- Chinese labs now target OpenAI's GPT-6 Astra for distillationfork.zone · 1 Nov
- GPT-6.1 Terrasimonwillison.net · 31 Oct
- GPT-5.6 Sol can beat Factorio on peaceful moderyanmadden.net · 31 Oct
Benchmarks
bar = share of the top score · Benchmark data: Artificial AnalysisFamily progress
Intelligence Index
- Family releases32.5
Same family
GPT-5 Codex- 32.5
- 28.5
- 23.7
Alternatives
other vendors · similar capability- 25.3
- 29.2
- 26.5
- U24.1
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