Tenstorrent raises $1.5 billion in Series E, valuation climbs to $6.2 billion

Tenstorrent raises $1.5 billion in Series E

Santa Clara‑based Tenstorrent announced on Monday that it has closed a $1.5 billion Series E funding round. The new money lifts the startup’s post‑money valuation to $6.2 billion – more than double the $2 billion figure recorded after its December 2024 round.

Who is behind the funding?

The round was jointly led by Trace Capital and Innovation X. Participants also include ARK Invest, Morgan Stanley, T. Rowe Price, Protagonist, Fidelity Management & Research Co., SanDisk, and Tether Investments. Earlier investors such as Samsung Securities and AFW Partners returned to the table, reaffirming their commitment.

What the money will fund

Tenstorrent said the capital will be used to scale production of its Galaxy servers, a modular system that strings together dozens of its AI chips to run large language models, video‑generation workloads and other demanding inference tasks. The company also plans to grow its research team, expand its global workforce, and push deeper into the open‑source RISC‑V ecosystem that underpins its Tensix Neo accelerators and Ascalon CPUs.

CEO Jim Keller – a veteran chip architect who previously led efforts at Tesla, Apple and AMD – highlighted the strategic importance of a “full‑stack” approach: “We’ve built one architecture and we sell it at every size. The future of compute is open, scalable and owned by the people building on it.”

Why the valuation matters

The $6.2 billion figure places Tenstorrent among a small but growing cohort of AI‑hardware startups that can claim a valuation comparable to more established players. Analysts see the surge as a vote of confidence in the company’s ability to offer an alternative to Nvidia’s GPU‑dominant model, especially as enterprises look for cost‑effective, energy‑efficient solutions.

Industry observers such as Holger Mueller of Constellation Research argue that “more competition and deployment options for AI compute can only be beneficial for enterprises, making AI workloads cheaper and more flexible.”

Looking ahead

Tenstorrent’s next milestones include ramping up Galaxy server deployments worldwide and extending its software stack – TT‑Forge, TT‑Metalium and TT‑LLK – to support an even broader range of machine‑learning frameworks. With the fresh capital, the company aims to cement its role as a key player in the open‑compute movement and to challenge the incumbent GPU paradigm.