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Will Open-Source Threaten Anthropic's Business & Do Margins Matter in a World of AI | Matt Murphy

Matt Murphy is a Partner at Menlo Ventures, who just raised $3 billion in fresh capital, its largest pool ever. Matt's portfolio includes Anthropic, Lovable, Legora, OpenRouter, Chai Discovery, Axiom, OpenEvidence and more. ----------------------------------------------- Timestamps: 00:00 Intro 01:21 How Menlo Got Into Anthropic 05:12 Ownership Doesn't Matter Anymore 07:25 When Does Price Actually Matter? 10:18 How Menlo Sized Up for the Second Anthropic Round 13:43 When to Take Money Off the Table 22:00 Why Menlo Raised Only $3B When They Could Have Raised Much More 29:41 OpenRouter: Why Matt Thinks It's Already a Beast 31:05 The Legora Investment: Is Anthropic a Threat? 34:33 Series A Is the Worst Insertion Point Right Now 37:18 The Barbell Strategy: Go Earlier and Go Bigger, Skip the Middle 43:25 Can a Great Seed Investor Also Be a Great Growth Investor? 54:59 Menlo's Anthropic Carry 56:33 Richer Investors Make Better Investors 1:01:29 Where Is AI Overheated? 1:02:40 Where Is AI Underinvested? 1:04:15 What Matt Is Most Excited About in the Next 10 Years ---------------------------------------------------------------------------------------------- Subscribe on Spotify: https://open.spotify.com/show/3j2KMcZTtgTNBKwtZBMHvl?si=85bc9196860e4466 Subscribe on Apple Podcasts: https://podcasts.apple.com/us/podcast/the-twenty-minute-vc-20vc-venture-capital-startup/id958230465 Follow Harry Stebbings on X: https://twitter.com/HarryStebbings Follow Matt Murphy on X: https://twitter.com/mmurph Follow 20VC on Instagram: https://www.instagram.com/20vchq Follow 20VC on TikTok: https://www.tiktok.com/@20vc_tok Visit our Website: https://www.20vc.com Subscribe to our Newsletter: https://www.thetwentyminutevc.com/contact ----------------------------------------------- #20vc #harrystebbings #ai #mattmurphy #menloventures #anthropic #opensource #venture

Matt MurphyguestHarry Stebbingshost
Jul 27, 20261h 6mWatch on YouTube ↗

At a glance

WHAT IT’S REALLY ABOUT

Matt Murphy on AI investing: ownership, margins, open-source, barbell strategy.

  1. Menlo’s Anthropic investment required abandoning traditional ownership/valuation heuristics in favor of gaining exposure to rare, compounding outliers.
  2. Murphy argues margins still matter in AI apps, but investors must underwrite credible paths from today’s 20–30% gross margins to ~60–70% via optimization, model strategy, and cost control.
  3. He believes open source will meaningfully share workloads but won’t “displace” frontier models like Anthropic where performance drives retention, revenue, and user engagement.
  4. The market is shifting toward multi-model optimization (routing, observability, tooling), making infrastructure layers like OpenRouter increasingly valuable as companies manage price/performance/latency tradeoffs.
  5. Venture insertion points have changed: Series A is unusually risky/expensive, pushing Menlo toward a barbell approach—earlier seed/neo-labs and later “anointed winner” growth rounds—while keeping fund size and culture deliberately constrained.

IDEAS WORTH REMEMBERING

5 ideas

In AI, “being in” outliers beats owning a lot of average outcomes.

Murphy says outcome sizes have expanded so much that small percentage ownership in a generational winner can outperform high ownership in a $300–500M exit; this drove Menlo to prioritize access over perfect entry price.

Price matters less than fit and exposure—until you truly can’t deploy effectively.

Rather than anchoring on valuation, Menlo focuses on whether it can play meaningfully within fund guardrails; when check size exceeds mandate, SPVs and LP co-invest can extend capacity without resizing the core funds.

SPVs are powerful, but the market’s trust problem is real.

Menlo’s first SPV (>$500M) was “nerve-wracking,” and Murphy notes founders are increasingly hostile to unauthorized SPV marketing and secondary “access” claims—cap-table control is tightening.

Margins still matter; the key is believing the path, not the snapshot.

Many AI apps look margin-light today due to inference costs, but Murphy underwrites whether teams can credibly move from ~20–30% gross margin to ~60–70% via optimization, model mix, and possibly complementary in-house models.

Open source will take some calls, but frontier performance can still win economically.

Murphy expects enterprises to mix models (e.g., premium calls to frontier, cheaper calls to open source), but argues higher-performing models can pay for themselves by improving retention, revenue, and engagement.

WORDS WORTH SAVING

5 quotes

We're in an outlier business right now, right?

Matt Murphy

There's never going to be a perfect entry point into this market. If we wanted to be in this market, this was the way in.

Matt Murphy

You have to be in the big outliers to drive great returns, and you're better off being in them at a very small percent than owning a large percent of a company that exits for 3 to 500.

Matt Murphy

Wave one of AI is like, "Let's just get, let's just get it going." Wave two is like, "Let's get a lot more sophisticated about what we use and when and how."

Matt Murphy

This company is already a beast.

Matt Murphy

Anthropic origin story and underwriting a $4B+ entry valuationOwnership vs. outcome size in modern venture returnsSPVs and cap-table control; bad actors in secondary marketsAI gross margins, compute/inference costs, and paths to 60–70%Open source vs. frontier models; multi-model usage in enterprisesOpenRouter and the model-routing/optimization layerSeries A compression and Menlo’s barbell strategy (seed + outlier growth)Where AI is overheated (neo-labs/robotics) vs underinvested (infra tooling)Fund size discipline, culture, and investor performance post-big wins

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