Startup profile for Pimlico: latest funding, latest known valuation, total disclosed funding, investors, status, sources, and why the company is interesting. Part of the Venture Capital Tracker startup directory.
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Pimlico funding, valuation and investors

ERC-4337 smart-account infra — bundlers, paymasters, and gas sponsorship for onchain apps.

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Funding, valuation & investors

Answer-first snapshot

Latest funding

Seed

$4.2M · November 2023

Latest known valuation

Not publicly disclosed

Total disclosed equity funding

$5.8M

Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.

Current status

private

seed · London, UK

Investors in latest funding

Lead: Andreessen Horowitz

Sources: latest funding Last verified: 2026-07-25

Overview

Pimlico is a London-based Web3 infrastructure company providing bundler and paymaster services for Ethereum ERC-4337 smart accounts. Founded in January 2023 by Kristof Gazso — co-author of the ERC-4337 standard alongside Vitalik Buterin and others — Pimlico lets wallet and dApp developers offer gasless transactions, ERC-20 gas payment, social recovery, and batched ops without building relay infrastructure. The company raised a $1.6M pre-seed led by 1confirmation in September 2023 and a $4.2M seed led by a16z crypto in November 2023, marking a16z's first investment from its London office. Pimlico reports 250M+ transactions relayed and co-authors follow-on standards ERC-7677 and ERC-7679.

Why Pimlico is interesting

Kristof Gazso co-authored ERC-4337 with Vitalik Buterin, then shipped Pimlico weeks after a16z Crypto Startup School — a16z's first London-office check backs the standard's reference infra as 250M+ transactions relayed in production.

Product & use cases

Developer APIs and open-source bundler (permissionless.js) for ERC-4337 account abstraction — gas sponsorship, paymasters, transaction bundling, and smart-wallet UX primitives.

  • Gasless onboarding for consumer crypto apps
  • Smart wallet bundler infrastructure for wallet teams
  • Enterprise paymaster and sponsorship for onchain products

Key facts

  • a16z portfolio status: Active
  • Pre-seed (Sep 2023): $1.6M led by 1confirmation (The Block / LinkedIn)
  • Seed (Nov 2023): $4.2M led by a16z crypto — first a16z check from London office (TechCrunch)
  • 250M+ transactions relayed; co-authors of ERC-4337, ERC-7677, ERC-7679 (Pimlico.io)

Funding history (newest first)

Seed

2023-11 $4.2M

Source: https://techcrunch.com/2023/11/07/a16z-backs-crypto-startup-pimlico-its-first-check-from-london-office/

Pre-seed

2023-09 $1.6M
  • 1confirmation (lead)

Source: https://www.theblock.co/post/240000/pimlico-pre-seed

Investors in our directory

Funds linked from Pimlico's profile — open a fund page for stage focus and related deal articles.

Andreessen Horowitz

Competitive landscape

Edge: Protocol-level credibility from co-authoring ERC-4337 and operating production bundler code downloaded 729K+ times — developers trust the team that wrote the standard.

Account abstraction infra is crowded as ERC-4337 adoption grows, but Pimlico's moat is standard authorship plus production scale. Alchemy and Coinbase offer bundled AA within broader stacks; Pimlico targets teams wanting best-in-class bundler/paymaster rails. Wallet teams choosing Safe or custom accounts still need relay and sponsorship — Pimlico's permissionless.js is the reference implementation many integrate. Competition will intensify as incumbents embed AA natively.

  • Alchemy Account Kit direct

    Full-stack web3 platform with AA modules; Pimlico is AA-specialist with open-source bundler focus.

  • ZeroDev direct

    Smart wallet SDK and infra; competes for wallet-developer integrations.

  • Safe adjacent

    Multisig and smart-account wallet; integrates AA infra from providers like Pimlico.

Notable stories

  • Kristof Gazso joined a16z's Spring 2023 Crypto Startup School in Los Angeles when Pimlico was 'just a few weeks old' — a16z GP Sriram Krishnan wrote they were 'blown away' by shipping velocity before leading the seed (TechCrunch).
  • Gazso co-authored ERC-4337 with Vitalik Buterin and Ethereum core researchers in 2021 — the spec gained momentum because it required no consensus-layer changes (a16z crypto blog).

Industries

Crypto & Web3 Developer Tools

Related funding articles

Venture Capital Tracker pieces that cover Pimlico's financing or category context.

FAQs about Pimlico

Practical answers founders, operators, and investors typically search for.

ERC-4337 account-abstraction infrastructure — bundlers, paymasters, and smart-account developer tools.
Kristof Gazso, co-author of the ERC-4337 Ethereum standard.
a16z crypto led the $4.2M seed; 1confirmation led $1.6M pre-seed. See /fund/andreessen-horowitz.
Ethereum standard for smart contract wallets enabling gas sponsorship, batching, and social recovery without changing the consensus layer.
Both offer bundler/paymaster infra; Pimlico specializes in AA with open-source permissionless.js and standard co-authorship.
November 2023 — $4.2M led by a16z crypto.
The seed was a16z's first investment from its London office, signaling UK crypto infra focus.
Smart-contract service that sponsors gas fees so users can transact without holding ETH.
250M+ in production per Pimlico.io marketing claims.
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