Lightspeed Venture Partners
About Lightspeed Venture Partners
Lightspeed Venture Partners is a global venture capital firm headquartered in Menlo Park, US. Its website is lsvp.com and it maintains a LinkedIn company page. Founding year, fund history, and the partners who lead AI investing were not confirmed in this research and are not listed here.
Lounge's deals desk records Lightspeed as lead on several AI rounds. These include Anthropic's Series F of $13B (September 2025), Mistral AI's Series B of $640M (June 2024), Harvey's Series H of $550M (September 2026), and Temporal Technologies' Series E of $550M (September 2026). Lightspeed is also recorded in AI rounds at earlier stages, such as the $113M Mistral AI seed round (June 2023) and the $150M Inferact seed round (January 2026), both led by the firm.
Lounge tags the firm with Seed, Series A, Series B and Series C+. Round sizes on the deals desk range from a $4.5M pre-seed (MITO AI, January 2026) to a $2B Series C (Mistral AI, September 2025). Check sizes Lightspeed writes are not public in the sources available here, so none are stated.
- Anthropic: Series F, $13B, September 2025, led
- Mistral AI: Series C, $2B, September 2025; Series B, $640M, June 2024; Seed, $113M, June 2023, led
- Harvey: Series H, $550M, September 2026, led
- Temporal Technologies: Series E, $550M, September 2026, led
- Fireworks AI: Series D, $1.5B, July 2026
- Suno: Series D, $400M, June 2026
- CuspAI: Series B, $450M, June 2026
- Nextop AI: Series B, $500M, March 2026, led
- Recursive Intelligence: Series A, $300M, January 2026, led
- Inferact: Seed, $150M, January 2026, led
- Skild AI: Series A, $300M, July 2024, led
- Zenzap: Series A, $33M, October 2026, led
- Arena: Series B, $200M, October 2026, led
Investing activity
Lightspeed Venture Partners appears in 42 AI deals tracked by the AI Lounge deals desk, rounds totalling $30B, and led 27 of them. The rounds are mostly Seed, Series B and Series A, with a median round size of $96M and the largest at $13B. The most recent are Casap (Series B, $56M, Oct 2026), Zenzap (Series A, $33M, Oct 2026) and Arena (Series B, $200M, Oct 2026).
Lightspeed Venture Partners most often invests alongside Sequoia Capital, Andreessen Horowitz, General Catalyst and Nvidia, and the companies it backs on AI Lounge are mostly in AI, AI agents for financial services and AI agents / workplace messaging.
Deals
Frequently asked questions about Lightspeed Venture Partners
Does Lightspeed Venture Partners invest in AI startups?
Yes. Lounge's deals desk lists the firm in many AI rounds, including Anthropic, Mistral AI, Harvey and Temporal Technologies, several of them marked as led by Lightspeed.
What stages does Lightspeed Venture Partners invest in?
Lounge tags the firm with Seed, Series A, Series B and Series C+. Its deals desk shows AI rounds at pre-seed through growth stages.
Where is Lightspeed Venture Partners headquartered?
The firm is headquartered in Menlo Park, US, according to the Lounge profile data.
What are Lightspeed Venture Partners' most recent AI deals on Lounge?
The newest entries are Harvey's $550M Series H and Temporal Technologies' $550M Series E, both September 2026 and both led by Lightspeed, plus Zenzap's $33M Series A in October 2026.
How can a founder find Lightspeed Venture Partners' portfolio and contact details?
The firm's website is lsvp.com and its LinkedIn page is linked on this profile. The sources reviewed here do not describe a submission process.
What AI companies has Lightspeed Venture Partners invested in?
Lightspeed Venture Partners's AI investments include Casap, Zenzap, Arena, Reactor, Temporal Technologies, Buildots, Harvey and Harmony. The 42 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Lightspeed Venture Partners based?
Lightspeed Venture Partners is based in Menlo Park, US.
What stage does Lightspeed Venture Partners invest at?
In the rounds tracked on AI Lounge, Lightspeed Venture Partners has invested at Seed, Series B, Series A and Series C, with a median round of $96M. Lightspeed Venture Partners led 27 of those rounds.
Who does Lightspeed Venture Partners co-invest with?
Lightspeed Venture Partners's most frequent co-investors on AI Lounge are Sequoia Capital (9 deals), Andreessen Horowitz (8 deals), General Catalyst (6 deals), Nvidia (5 deals) and Coatue (4 deals).
How can founders reach Lightspeed Venture Partners?
Founders on AI Lounge can see Lightspeed Venture Partners's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add Lightspeed Venture Partners to their Investor Pipeline to track the conversation.