Lead investor

AI funding rounds led by Lightspeed Venture Partners

Lightspeed Venture Partners led or co-led 4 funding rounds at 4 AI companies on Presspool's record, announced between January 22, 2026 and October 8, 2026. The most recent: LMArena, Harvey and Sandstone.

CompanyAmountRoundAnnouncedCo-leads
LMArena$200 millionSeries BOctober 8, 2026Khosla Ventures
Harvey$550MNot statedSeptember 9, 2026Diffusion
Sandstone$30MSeries AJune 9, 2026None named
Inferact$150 millionSeedJanuary 22, 2026Andreessen Horowitz

Each round and its sources

  1. LMArena: $200 million Series B

    At a $3.1 billion valuation; Salesforce Ventures and 01 Advisors participated.

    Announced October 8, 2026 · Company record · Listed in the AI startup funding roster for October 5–10, 2026 · Sources: Arena announcement, Unite.AI

  2. Harvey: $550M

    Announced September 9, 2026 · Company record · Sources: harvey.ai

  3. Sandstone: $30M Series A

    Announced June 9, 2026 · Company record · Sources: sandstone.com

  4. Inferact: $150 million Seed

    Announced January 22, 2026 · Company record · Sources: techcrunch.com

What this page covers

Presspool records the lead investors of each round, as the company's announcement or the confirming outlets name them. This page lists the rounds this investor led on Presspool's record: every weekly AI startup funding roster, and the latest round of each company on a niche map. It is not the investor's full portfolio, and rounds it joined without leading are not listed.

Every round links its sources. Corrections need a public source: see Contact. All lead investors: Investors.