field change
promptCaching
PreviousN/ACurrentfalse
This change was recorded from a source snapshot and was not silently overwritten.
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MODEL HISTORY
GPT-5.5 Pro history
A versioned source-linked timeline of changes.
VERSIONED MODEL RECORD
GPT-5.5 Pro history
Recorded changes are retained instead of silently overwriting the current model record. Each event is tied to the source observation that produced it.
ModelGPT-5.5 ProOpenAI · openai-gpt-5-5-pro
Events8Immutable observations in this view
Current recordView model →Facts, benchmarks and pricing
field change
webSearch
PreviousN/ACurrentfalse
This change was recorded from a source snapshot and was not silently overwritten.
field change
structuredOutput
PreviousfalseCurrenttrue
This change was recorded from a source snapshot and was not silently overwritten.
field change
modalities
Previous["file","image","text","tools","reasoning"]Current["File","Image","Text","Tools","Reasoning"]
This change was recorded from a source snapshot and was not silently overwritten.
field change
license
PreviousProprietaryCurrentN/A
This change was recorded from a source snapshot and was not silently overwritten.
field change
maxOutputTokens
PreviousN/ACurrent128000
This change was recorded from a source snapshot and was not silently overwritten.
field change
contextWindow
Previous1050000Current1050000
This change was recorded from a source snapshot and was not silently overwritten.
field change
knowledgeCutoff
PreviousN/ACurrent2025-12-01
This change was recorded from a source snapshot and was not silently overwritten.