Lightspeed Venture Partners vs M13

AI Leaderboard Arena Raises $200M at $3.1B Valuation

Arena, the AI leaderboard platform formerly known as Chatbot Arena and LMArena, has raised a $200 million Series B round at a $3.1 billion valuation. The round was led by Lightspeed Venture Partners and Khosla Ventures, with participation from Salesforce Ventures, 01 Advisors, Dell Technologies Capital, Endeavor Catalyst, a16z, and Felicis. This follows the company's announcement in June of reaching $100 million in annualized run-rate revenue. Arena provides a crowdsourced platform for rating AI model outputs and generates revenue through its paid AI Evaluations service. The company plans to develop a ranking system for AI agents, including an Alignment Index that measures behaviors like unauthorized actions and misattributing sources. Arena's valuation has nearly doubled from $1.7 billion post-money in January. However, the company has faced criticism from Cohere Labs researchers over alleged bias towards large AI providers.

• Arena raised a $200 million Series B round at a $3.1 billion valuation.
• The round was led by Lightspeed Venture Partners and Khosla Ventures.
• Arena reached $100 million in annualized run-rate revenue in June 2026.

Harvey Raises $550 Million at $15.5 Billion Valuation

AI-native legal tech startup Harvey has raised $550 million in a funding round co-led by Diffusion and Lightspeed Venture Partners, boosting its valuation to $15.5 billion. The company, which provides an operating system for legal and professional services, is used by over 200,000 lawyers across 2,400 law firms globally, including Fortune 500 companies. The funds will support expanding its knowledge base capabilities. Additionally, Harvey announced the acquisition of Guardrails AI, a security platform for AI agents, marking its fourth acquisition this year to enhance reliability in agentic AI. This deal underscores investor confidence in AI-native software, which commands premium multiples compared to traditional SaaS, and highlights the broader market trend of paying substantial premiums for genuinely AI-native companies.

• Harvey raised $550 million in a funding round led by Diffusion and Lightspeed Venture Partners, valuing the company at $15.5 billion.
• Harvey acquired Guardrails AI, an AI security platform for AI agents, as its fourth acquisition this year.
• Harvey serves over 200,000 lawyers at 2,400 law firms globally, including Fortune 500 companies.

What Is Agentic Identity? Meet Baselayer, the Identity Infrastructure for AI Agents

M13 announces fundraising for Baselayer, an identity infrastructure for AI agents, with a dedicated article published on September 22, 2026.

Investors Are Betting on AI Agents That Shop for You

Venture capitalists are increasingly funding startups building AI agents that can shop on behalf of consumers and handle payments. The article maps the emerging market for "agentic commerce," covering personal assistants like Instinct and Town, shopping search tools like Daydream, payment infrastructure startups like Catena Labs and Basis Theory, and marketing tech such as Profound. Major platforms are also moving: OpenAI and Stripe launched the Agentic Commerce Protocol, Google operates the Agent Payments Protocol, and Visa and Mastercard introduced Trusted Agent Protocol and Agent Pay. However, the space faces trust and fraud challenges, illustrated by Phia's cookie-stuffing scandal and an Instinct agent error that cost a user around $300. Investor interest remains strong, with millions raised across the sector, even as enterprise adoption lags due to compliance and security concerns.

• Adobe Analytics reported that 41% of respondents used AI for online shopping in June 2026.
• OpenAI and Stripe launched the Agentic Commerce Protocol (ACP), while Google operates the Agent Payments Protocol.
• Profound raised $96 million in Series C funding led by Lightspeed Venture Partners.