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Lightspeed Venture Partners AI portfolio in San Francisco

Multi-stage venture firm with deep practices in enterprise, consumer, and fintech. Filtered to AI companies headquartered in San Francisco.

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Built from a search like: “Lightspeed Venture Partners-backed AI companies in San Francisco”

Ranked by current headcount across Lightspeed Venture Partners-backed AI companies in San Francisco. Refreshed monthly.

  1. 1
    Arena· San Francisco, California, United States

    Created by researchers from UC Berkeley, Arena (formerly LMArena) is a community-powered platform to measure and advance the frontier of AI for real-world use. Tens of millions of builders, researchers, and creative professionals come to Arena to use frontier models and give feedback on their responses, shaping a public leaderboard grounded in real-world use.

    • Series A
    • 96 employees
    • Founded 2025

Lightspeed Venture Partners-backed AI companies in San Francisco

The list above ranks Lightspeed Venture Partners-backed AI companies headquartered in San Francisco by current headcount, drawn from public LinkedIn and Crunchbase records. With 1 matching companies in Refolk’s index, you can see exactly where Lightspeed Venture Partners’s AI thesis has landed in San Francisco.

Three filters - investor, industry, city - narrow the field to a tight cluster of operators with overlapping incentives. They share a thesis, a network, and a market. Hiring from this list usually means hiring someone already inside the Lightspeed Venture Partners AI world in San Francisco.

Refolk converts this list into a live search. Ask for “Lightspeed Venture Partners AI companies in San Francisco hiring senior engineers” or “founders of Lightspeed Venture Partners-backed AI companies in San Francisco who left in the last year” and Refolk returns a ranked shortlist.

How this list is built

Refolk pulled AI companies headquartered in San Francisco whose disclosed Crunchbase investor list includes Lightspeed Venture Partners, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes monthly.

Last refreshed: Sat, 19 Sep 2026 15:39:45 GMT

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How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

How fresh is the data?

The underlying index updates continuously and this ranking is rebuilt monthly. Last refreshed: Sat, 19 Sep 2026 15:39:45 GMT. For a list built against the index as it stands today, sign up and run the search live.

Can I find the people inside these companies?

Yes. Ask in plain English - for example "engineering leaders at these companies who joined in the last year" - and I return the specific people, with context on each.

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Type one sentence. I plan the search, read GitHub, public LinkedIn and Crunchbase records, and the open web as it is right now, and hand back a ranked list with the reason next to every name.

  1. 01Describe them

    One plain sentence. Role, city, stack, stage, whatever matters to you.

  2. 02I read the web live

    GitHub, public LinkedIn and Crunchbase records, the open web. Not a database that went stale last quarter.

  3. 03You read the shortlist

    Ranked, with the reasoning under every name. Open a profile, ask a follow-up, narrow it down.

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  • Read at search time, so a profile updated yesterday counts today.
  • Every step visible as it runs, every name with its reason.

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