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Reflection AI

Artificial intelligence · New York, United States · Private

Frontier AI company developing open models and the infrastructure to train and deploy them.

$27.5BReported post-money valuation$25B pre-money plus reported $2.5B April 2026 round
$2.5BLatest fundingReported Series C, April 2026
2024FoundedFrontier AI lab
PrivatePublic statusNo IPO filing disclosed

The Company

Reflection AI is building open frontier models, positioning itself around access to model weights and the infrastructure needed to train and serve advanced systems. Its strategy places it in direct competition with both closed-model labs and the growing ecosystem around open-weight AI.

The company reported that it closed a $2.5 billion Series C in April 2026 at a $25 billion pre-money valuation. That implies an approximately $27.5 billion post-money value, but the pre-money figure is the directly reported valuation and should not be treated as a public-market price.

Why It Matters

Reflection is a useful test of whether open frontier models can support a venture-scale business while training costs remain concentrated among a small number of capitalized labs. Its funding and compute access also matter for the competitive intensity facing AI infrastructure, data and application companies.

Valuation History

  1. $8B→2025Reported financing valuation
  2. $25B pre-money→Apr 2026Reported $2.5B Series C

What Changed

  1. Reflection announced $2B of funding to advance open frontier intelligence.

  2. The company reported closing a $2.5B Series C at a $25B pre-money valuation.

  3. Reflection announced a long-term compute-capacity agreement with Nebius.

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