Expired50% confidenceFactExact time
Bedrock Agent Core uses the Sonnet 4.5 model by default in demonstrations.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
9/16/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 9/30/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedA similar Sonnet 5 leak (codenamed Phoenix) appeared in February of this year, but the model that was ultimately officially released was Sonnet 4.6, not Sonnet 5.68% similarUnverifiedClaude Sonnet 4 is positioned above the previous Opus series, with the company officially describing it as a new category within the Sonnet series.68% similarUnverifiedSonnet 5 has switched to the tokenizer from Opus 4.7.67% similarUnverifiedIn a macOS interface cloning task, Sonnet 5 generated a complete desktop environment, but took approximately 40 minutes and consumed a large number of tokens in the workbench.62% similar
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