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NeuronFeed

Braintrust · Series B

The AI observability platform for building quality AI products at scale.

Amount

$80M

Round

Series B

Valuation

$800M

Announced

Feb 2026

Investors

Lead investor

Andreessen Horowitz

Notes

Iconiq led at $800M val. a16z, Greylock, basecase, Elad Gil.

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