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Andreessen Horowitz

Andreessen Horowitz (a16z) is a Silicon Valley venture capital firm investing in startups across software, crypto, biotech, and defense tech sectors.

Known aliases

  • a16z
  • a16z.com
  • a16z Growth
  • a16z.news
  • American Dynamism
  • Andreesen Horowitz
  • Andreessen
  • Andreessen Horowitz LLC
  • Андріссен Горовіц

Relationships

No evidence-backed relationships are recorded.

Current stories

product4 publishers

Greg Brockman stops paying into Leading the Future after $25 million of a $50 million pledge

OpenAI president Greg Brockman has stopped at $25 million of the $50 million he and his wife pledged to the Leading the Future super PAC. The stop followed objections from his own staff, while industry money keeps reaching the midterms through ads that mostly leave AI out.

Perspective Coverage

4 publishers
Builder
Builder 15%
Operator
Operator 51%
Investor
Investor 34%

Reality

Evidence72
Adoption
Insufficient
Hype gap+18
Incentives66
Confidence70
invest4 publishers

Andreessen Horowitz puts $38 million behind doxx.net's server-free networks for AI agents

Andreessen Horowitz led a $38 million Series A for doxx.net, a Miami startup building private networks for AI agents. The cash funds an open beta resting on one disclosed metric, the company's own count of more than 38 million potential threats blocked.

Perspective Coverage

4 publishers
Builder
Builder 34%
Operator
Operator 25%
Investor
Investor 41%

Reality

Evidence55
Adoption10
Hype gap+45
Incentives75
Confidence60
security6 publishers

Mandia's Armadin raises $255.5 million to point AI attack agents at customers' networks

Kevin Mandia's Armadin raised $255.5 million at a valuation above $2.5 billion, bringing its total to $445 million seven months after launch. Its case against periodic pen tests rests on performance data from an exercise Armadin ran with a partner.

Perspective Coverage

6 publishers
Builder
Builder 24%
Operator
Operator 38%
Investor
Investor 38%

Reality

Evidence55
Adoption30
Hype gap+40
Incentives75
Confidence60
invest5 publishers

a16z's academy commits $840,000 per founding student before anyone pays tuition

Andreessen Horowitz and individual investors put $42 million into a one-year, unaccredited San Francisco program whose first class of about 50 pays nothing. The paying version, at $60,000 to $90,000 a year, needs regulatory approval.

Perspective Coverage

5 publishers
Builder
Builder 29%
Operator
Operator 32%
Investor
Investor 39%

Reality

Evidence55
Adoption
Insufficient
Hype gap+35
Incentives75
Confidence60
build3 publishers

Kevin Mandia's Armadin raises $255.5 million to run red-team work as continuous AI software

Kevin Mandia's AI cybersecurity startup Armadin raised a $255.5 million Series B at a valuation above $2.5 billion. Security teams comparing its AI agents with periodic human pentests have only Armadin's own platform figures to go on.

Perspective Coverage

3 publishers
Builder
Builder 23%
Operator
Operator 37%
Investor
Investor 40%

Reality

Evidence55
Adoption25
Hype gap+35
Incentives65
Confidence60
invest10 publishers

EliseAI's $4 billion valuation tracks a doubling in recurring revenue

EliseAI raised $350 million at a $4 billion valuation, up from $2.2 billion 13 months earlier, with a16z and Bessemer co-leading again. On reported recurring revenue above $200 million, that is about 20 times sales, close to the multiple on its last round.

Perspective Coverage

10 publishers
Builder
Builder 22%
Operator
Operator 33%
Investor
Investor 45%

Reality

Evidence60
Adoption60
Hype gap+10
Incentives70
Confidence65
invest6 publishers

Investors price Kevin Mandia's seven-month-old Armadin above $2.5 billion

Armadin, the AI attack-testing startup run by Mandiant founder Kevin Mandia, raised $255.5 million at a valuation above $2.5 billion. Investors are betting that always-on AI agents will take over the budget companies now spend on periodic penetration tests.

Perspective Coverage

6 publishers
Builder
Builder 31%
Operator
Operator 32%
Investor
Investor 37%

Reality

Evidence55
Adoption20
Hype gap+40
Incentives80
Confidence60
invest2 publishers

Stand With Crypto answers the 49-50 Clarity Act defeat with three Senate endorsements

Coinbase-backed Stand With Crypto named its first three Senate endorsements two weeks after the Clarity Act failed 49-50. The group funds no campaigns itself, so its main Ohio pick depends on PAC money, starting with Fairshake's $30 million pledge for Jon Husted against Sherrod Brown.

Reality

Evidence72
Adoption
Insufficient
Hype gap+15
Incentives75
Confidence65
build2 publishers

Cognition reports 4.8x token throughput on Nvidia Vera Rubin in its own coding-agent test

Cognition says its SWE-2 model produced up to 4.8 times more total token throughput on Nvidia's Vera Rubin NVL72 than on GB200, in a test on CoreWeave. The company-run result points to more agent capacity per system, but whether long coding tasks get cheaper depends on what the new systems cost per hour.

Reality

Evidence40
Adoption30
Hype gap+35
Incentives85
Confidence60
build2 publishers

ElevenLabs doubles its valuation to $22 billion in a $300 million employee share sale

ElevenLabs is valued at $22 billion, double its February mark, after employees sold $300 million of shares to investors led by Wellington and T. Rowe Price. Its usage evidence is a self-reported conversation count, and teams sizing voice automation still need completion rates the announcement did not include.

Reality

Evidence55
Adoption40
Hype gap+20
Incentives60
Confidence55
product1 publisher

Personal AI agents return to a market where 2.2% of consumers pay

PNC figures put paying AI consumers at 2.2% in May, averaging $31 a month, while Meta's Muse, OpenAI's Dots and a $10bn Instinct revive personal assistants. Model upgrades have barely moved either figure, so the teams shipping these agents need revenue that does not depend on a monthly fee.

Publishers:techcrunch.com

Reality

Evidence40
Adoption20
Hype gap+20
Incentives45
Confidence45

Earlier coverage

  1. A 1914 statute, not a merger review, is the live antitrust risk in the data stack

    Product · August 17, 2026 · 2 publishers

  2. Mozilla's Smart Window bets that opt-in AI is a feature, not a concession

    Product · August 18, 2026 · 5 publishers

  3. Etched has silicon, a customer rack running, and $1bn raised in 26 days

    Product · August 18, 2026 · 4 publishers

  4. Temporal's reported $12B ask prices the boring part of the agent stack

    Invest · August 18, 2026 · 2 publishers

  5. Stripe buys the toll booth: a reported $7.5bn for OpenRouter, and the routing layer

    Product · August 19, 2026 · 3 publishers

  6. Rillet's $1B mark puts a price on ERP displacement risk

    Invest · August 18, 2026 · 4 publishers

  7. Temporal's second doubling in a year prices durable execution as agent plumbing

    Product · August 19, 2026 · 2 publishers

  8. Castelion's $13bn valuation rests on $500m of contracts and a 2027 delivery date

    Product · August 20, 2026 · 3 publishers

  9. Stripe pays a reported $7.5B for OpenRouter, betting agentic commerce runs through the meter

    Invest · August 20, 2026 · 13 publishers

  10. Harvey builds its flagship legal model on Chinese open weights, not its investor's API

    Product · August 23, 2026 · 2 publishers

  11. a16z fences off $1.1B for power, cooling, memory and networking

    Build · August 28, 2026 · 3 publishers

  12. a16z's 50 technical buyers preferred credits over tokens by nearly two to one

    Product · August 28, 2026 · 1 publisher

  13. Atoms' robotaxi denial carries an exception for Uber's ridesharing business

    Product · September 6, 2026 · 3 publishers

  14. Harvey's $550M round prices legal AI at 39 times the ARR it just crossed

    Invest · September 9, 2026 · 2 publishers

  15. The UAE's $3bn buys about 13 per cent of a tunnelling company with one public loop

    Invest · September 10, 2026 · 2 publishers

  16. Cognition moves the Dioxus team onto Devin's virtual machines and testing systems

    Build · September 10, 2026 · 2 publishers

  17. Lightspeed prices Temporal at 50 times revenue in a $550 million Series E

    Invest · September 14, 2026 · 4 publishers

  18. Factory's $5B lands at about a tenth of Cognition's mark from seven days earlier

    Invest · September 15, 2026 · 3 publishers

  19. Fairshake commits a quarter of its remaining cash to keeping Sherrod Brown out of the Senate

    Invest · September 21, 2026 · 5 publishers

  20. A16z's $42 million college alternative lets ten AI employers help write the curriculum

    Leadership · September 23, 2026 · 2 publishers

  21. Vals publishes a buildable Lean proof for the shortest-path algorithm its ten agents wrote

    Build · September 22, 2026 · 1 publisher

  22. Instinct raised $250m at a $2.5bn valuation after handing VCs the first invites

    Leadership · September 22, 2026 · 1 publisher

  23. Adaptive raises $30m led by Tidemark, treats construction accounting as a data-collection problem

    Invest · September 20, 2026 · 2 publishers

  24. A conditional OCC charter lets Bastion run stablecoin issuance for other companies

    Invest · September 19, 2026 · 1 publisher

  25. Vals sells a private AI exam to the labs it grades

    Product · September 19, 2026 · 1 publisher

  26. WIRED traces rising Thai camera shipments into Flock Safety's supply chain

    Build · September 19, 2026 · 1 publisher

  27. San Francisco rents are pricing out a $120,000 project manager at a Fortune 500 retailer

    Leadership · September 18, 2026 · 1 publisher

  28. Agents delivered a million signups to a product almost no human had heard of

    Leadership · September 18, 2026 · 1 publisher

  29. AI industry money tops $800,000 for Mike Rounds in a race he already leads

    Product · September 18, 2026 · 1 publisher

  30. Arcjet puts a policy check in front of every action an AI agent takes

    Product · September 17, 2026 · 1 publisher

  31. Arrow 2 puts editable SVG behind a stateless Responses endpoint

    Build · September 17, 2026 · 1 publisher

  32. Flock's nationwide lookup returned Boston plate reads for three days after the city confirmed sharing was off

    Build · September 15, 2026 · 1 publisher

  33. Bores spreads a $30 million target across 11 states after the cycle's costliest House primary

    Invest · September 15, 2026 · 1 publisher

  34. Temporal's $550m round prices its crash-resume log at about 50 times revenue

    Product · September 14, 2026 · 2 publishers

  35. OpenAI accepts AI rules from any venue that stops short of gating a model release

    Product · September 15, 2026 · 1 publisher

  36. Keewano's $12M agent database asks for a second copy of your event stream

    Product · September 15, 2026 · 1 publisher

  37. Two rounds account for all of Nvidia's $1.3 billion in August lead deals

    Invest · September 14, 2026 · 1 publisher

  38. Castelion's $1B round is priced like a factory, not a startup

    Invest · August 21, 2026 · 4 publishers

  39. Crusoe and Fluidstack take four fifths of the week's disclosed megaround dollars

    Invest · September 4, 2026 · 3 publishers

  40. A16z counts one Databricks stake as a fifth of its assets under management

    Product · September 12, 2026 · 1 publisher