field change
promptCaching
PreviousN/ACurrenttrue
This change was recorded from a source snapshot and was not silently overwritten.
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MODEL HISTORY
Claude Opus 4 history
A versioned source-linked timeline of changes.
VERSIONED MODEL RECORD
Claude Opus 4 history
Recorded changes are retained instead of silently overwriting the current model record. Each event is tied to the source observation that produced it.
ModelClaude Opus 4Anthropic · anthropic-claude-opus-4
Events7Immutable 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
modalities
Previous["image","text","file","tools","reasoning"]Current["Image","Text","File","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/ACurrent32000
This change was recorded from a source snapshot and was not silently overwritten.
field change
contextWindow
Previous200000Current200000
This change was recorded from a source snapshot and was not silently overwritten.
field change
knowledgeCutoff
PreviousN/ACurrent2025-01-31
This change was recorded from a source snapshot and was not silently overwritten.