Coverage (30d)
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This Week
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Evidence
1 articlesRelationships
2Timeline
GPT-3.52026-05-02
GPT-5.5 fully solved TLO enterprise network simulation in 2 of 10 attempts
GPT-3.52026-05-02
GPT-5.5 scored 71.4% on AISI expert CTF tasks, matching Claude Mythos Preview
GPT-3.52026-04-24
Early user review of GPT-5.5 in Codex highlights major improvements
GPT-3.52026-04-23
GPT-5.5 model family achieves leading position on Artificial Analysis Index for cost-performance
GPT-3.52026-04-23
OpenAI engineer reveals GPT-5.5 is a Blackwell-native model trained on Nvidia GB200/GB300 NVL72 systems.
GPT-3.52026-04-23
GPT-5.5 spotted via Codex API backdoor, suggesting unofficial release channel for image generation.
Claude 3.5 Opus2026-04-16
Unannounced model listing appears on Google Vertex AI, signaling imminent public release.
Claude 3.5 Opus2026-03-24
Rated as performing at second-year graduate student level in physics research by Harvard physicist
Ecosystem
Claude 3.5 Opus
competes withGPT-3.51 src
deploysChain-of-Thought Prompting1 src
deploysConstitutional AI1 src
GPT-3.5
competes withGemini 3 Pro2 src
competes withGPT-5.31 src
competes withClaude Mythos1 src
competes withGemini Flash1 src
competes withComposer 21 src
competes withClaude 3.5 Opus1 src