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Net Loss Per Share (Additional Information) (Details)	9 Months Ended
	Sep. 30, 2025
Earnings Per Share [Abstract]
Weighted Average Shares Outstanding Exchange Ratio	0.78

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- Definition

Weighted average shares outstanding exchange ratio

+ References

No definition available.

+ Details

Name:	bzai_WeightedAverageSharesOutstandingExchangeRatio
Namespace Prefix:	bzai_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration