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GPT-5.5 Pro · OpenAI — forck
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So
far
23 Apr
released
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On its posts
So
far
23 Apr
released
·
Per models.dev
0
posts about it
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OpenAI
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+31 →
How it measures
Artificial Analysis · Intelligence Index
Artificial Analysis
, read 20 October 2026
About the model
Lab
OpenAI
Variant of
GPT-5.5
Released
23 April 2026, per models.dev
OpenRouter
Listed 24 April 2026
openai/gpt-5.5-pro
About the model
Lab
OpenAI
Variant of
GPT-5.5
Released
23 April 2026, per models.dev
OpenRouter
Listed 24 April 2026
openai/gpt-5.5-pro