OpenAI's cozy partner Cerebras is on track for a blockbuster IPO

Overview

AI chipmaker Cerebras Systems is preparing for a blockbuster IPO that could value the company at $26.6 billion or more. The company announced plans to sell 28 million shares at $115 to $125 per share, raising approximately $3.5 billion.

Key Financial Details

IPO Price Range: $115-$125 per share
Market Cap (High End): $26.6 billion
Capital Raised: $3.5 billion
Previous Valuation (Feb 2026): $23 billion (Series H)
Demand: Banks fielding $10 billion in orders for $3.5 billion worth of shares

Cerebras Technology

Cerebras offers an AI-specific chip called the Wafer-Scale Engine 3 that:

Challenges GPU-based AI chips
Claims faster inference processing
Uses less power than competitors
Inference: compute needed to process user prompts

OpenAI Relationship

The relationship between Cerebras and OpenAI is deep and financially significant:

December Loan: OpenAI loaned Cerebras $1 billion secured by warrants
Share Warrants: OpenAI can purchase over 33 million shares
Multi-Year Agreement: Worth more than $10 billion signed in January 2026
Customer Status: OpenAI is one of Cerebras' largest customers
Historical: OpenAI considered acquiring Cerebras (never happened)

Notable Investors

Major Shareholders (>5% stake):

Alpha Wave (Rick Gerson)
Benchmark (Eric Vishria)
Eclipse (Lior Susan)
Fidelity
Foundation Capital (Steve Vassallo)

Other Investors:

1789 Capital, Abu Dhabi Growth Fund, G42, Altimeter, AMD, Atreides Management, Coatue, Moore Strategic Ventures, Tiger Global, Valor Equity Partners, VY Capital

Angel Investors Include:

Sam Altman (OpenAI CEO)
Greg Brockman (OpenAI President)
Ilya Sutskever (Former OpenAI Chief Scientist)
Adam D'Angelo (OpenAI Board Member, Quora CEO)
Andy Bechtolsheim (Sun Microsystems/Arista co-founder)
Lip-Bu Tan (Intel CEO)

Fundraising Timeline

2024: Initial IPO attempt delayed due to federal review of G42 investment
September 2025: Raised $1.1 billion at $8.1 billion valuation (led by Fidelity and Atreides)
February 2026: Raised $1 billion Series H at $23 billion valuation
May 2026: IPO announcement targeting $26.6 billion valuation

Market Significance

This would be the largest tech IPO of 2026 so far and could signal appetite for other major offerings including:

SpaceX
OpenAI
Anthropic

Legal Context

The OpenAI-Cerebras relationship was presented as evidence in Elon Musk's lawsuit against OpenAI, with Musk's attorneys claiming he was unaware of OpenAI executives' personal investments in Cerebras.