Greptile

Greptile began at a hackathon in San Francisco’s SoMa district in July 2023 with the idea of letting developers ask plain-English questions about large real-world codebases. Co-founders Soohoon Choi, Vaishant Kameswaran and Daksh Gupta got their first paying customers within a week of the event and had 100 users before joining Y Combinator.⁠[1][2]

Gupta founded Greptile after graduating from Georgia Tech in 2023; Kameswaran also studied computer science at Georgia Tech.⁠[3][4]

Greptile went through Y Combinator’s Winter 2024 batch. On June 9, 2024, it announced a $4.1 million seed round led by Initialized CapitalInitialized CapitalInitialized Capital is an early-stage venture capital firm headquartered in San Francisco, United States, founded in 2011 by Garry Tan, Alexis Ohanian, and Harj Taggar, and an early investor in companies such as Coinbase, Instacart, Cruise, and Flexport. In December 2021 it announced it had raised $700 million in new funds; after Tan became President and CEO of Y Combinator in early 2023, Brett Gibson became managing partner.Open the full entry, with angels including Rich Aberman (WePay) and JJ Fliegelman (WayUp); nearly 400 software teams were using its API, chatbot and integrations.⁠[3][2]

Its early product, which it called “codebase-optimized RAG,” indexed a codebase as a graph of how its parts connect rather than as a list of files, and was offered as a chatbot and an API for uses such as reviewing merge requests, diagnosing bugs from Sentry alerts and updating internal documentation.⁠[2]

On October 8, 2024, Greptile released Greptile 2.0, a ground-up rewrite positioning the product as a codebase intelligence platform, with uses including a code review bot, Jira and Linear integrations and custom integrations. The company said it served more than 900 software teams in over 50 countries.⁠[1]

In November 2024 Gupta, then 22, posted on X that Greptile “offers no work-life-balance,” writing that employees typically worked from 9 a.m. to 11 p.m., including Saturdays and sometimes Sundays. After the post went viral he said in an interview with Inc.: “No one cares about the third-best company, or even the second-best company in any category in software.”⁠[3]

On September 23, 2025, Greptile announced a $25 million Series A led by Benchmark, with continued support from Cory Levy, Y Combinator and Initialized Capital; the company is legally named Tabnam Inc. It said it had reviewed more than 500 million lines of code that month for companies including Brex, Substack, PostHogPostHogPostHog is a software company and product platform founded in 2020 by James Hawkins and Tim Glaser. It began with open-source product analytics and expanded into session replay, feature flags, experimentation, a data warehouse and AI-assisted development. It offers cloud services and open-source code, with some enterprise features under separate licensing; PostHog Desktop entered public beta in 2026.Open the full entry, Bilt and Y Combinator’s internal software team.⁠[5][6]

Greptile v3, released the same day, rewrote the review workflow: where v2 ran a fixed flowchart of codebase-context and external-context steps, v3 lets the agent decide its next step based on what it finds. v3 also learns coding standards from engineers’ comments and added the Greptile MCP Server and integrations with Jira, Notion and other tools. The company said v3 reviewed more than one billion lines of code after launch and that its upvote/downvote ratio rose from 1.44 under v2 to 5.13.⁠[7][5]

Greptile’s main competitors in AI code review at the time included CodeRabbitCodeRabbitCodeRabbit is an AI code review platform company started in early 2023 by Harjot Gill, with Gur Singh as co-founder. In August 2026 it raised a $143 million Series C at a $1.5 billion valuation.Open the full entry and Graphite.⁠[6][3]

On March 5, 2026, Greptile released Greptile Agent v4 and moved to base-plus-usage pricing of $30 per developer per month, including 50 reviews, with additional reviews at $1 each.⁠[8]

On June 15, 2026, Greptile launched TREX (short for Test, Run, Execute), an execution layer that runs the code under review rather than only reading it; the company said Greptile review with TREX caught 20% more bugs in its evaluations.⁠[9]

On August 5, 2026, Greptile released v5, which runs a swarm of agents in parallel, each exploring a single hypothesis for a potential bug; the company said live data from more than one million pull requests showed the share of Greptile comments addressed by authors rising from 52% to 66%. On September 25, 2026, it introduced two deeper review tiers, Plus and Apex, costing 3 and 10 credits per review against 1 credit for the base tier.⁠[10][11]

On October 19, 2026, Greptile announced a $50 million Series B led by Menlo Ventures, with participation from Jump TradingJump TradingJump Trading is a proprietary trading firm headquartered in Chicago. It was founded in 1999 by two former Chicago Mercantile Exchange pit traders, built its business on algorithmic and high-frequency trading, and trades equities, options, credit, commodities, futures, and digital assets. Since 2021 its crypto business has operated under the Jump Crypto brand and has worked on blockchain infrastructure projects including Wormhole, Pyth, and Firedancer; in December 2024 its subsidiary Tai Mo Shan settled with the U.S. Securities and Exchange Commission over trading related to TerraUSD, paying about $123 million without admitting or denying the findings.Open the full entry, Wing, Operator Collective, Benchmark, Y Combinator, Browder Capital and Initialized Capital, valuing the company at $750 million; Deedy DasDeedy DasDeedy Das, also known as Debarghya Das, is a partner at Menlo Ventures investing in AI, infrastructure and enterprise software. Previously an engineer at Facebook and Google and an early builder of Glean and Glean Assistant, he helped launch the Anthology Fund with Anthropic.Open the full entry joined Greptile’s board.⁠[12]

The company said Greptile reviews and tests more than 1% of all pull requests opened on GitHub each day, for thousands of engineering teams including NVIDIANVIDIANVIDIA is an American semiconductor and computing technology company that provides graphics processing units, artificial intelligence infrastructure, networking interconnects, and computing software, and is listed on Nasdaq under the ticker NVDA.Open the full entry, CoinbaseCoinbaseCoinbase is a U.S. operator of crypto asset trading platforms, founded in 2012 by Brian Armstrong and Fred Ehrsam, whose listed parent is Coinbase Global, Inc.; it went public through a direct listing on Nasdaq (ticker COIN) in April 2021 and joined the S&P 500 in May 2025. It provides crypto trading, custody, staking, and stablecoin-related services, launched USDC with Circle, develops the Ethereum layer-2 network Base, and acquired the crypto options exchange Deribit in 2025; its venture investing operates as Coinbase Ventures.Open the full entry, Decagon and Vanta, and that its mission is to automate code validation so teams can auto-merge complex changes.⁠[12]

Greptile: Official website: https://www.greptile.com/ (opens in a new window).⁠[13]

X: Public account: https://x.com/greptile (opens in a new window).⁠[13]

LinkedInLinkedInLinkedIn is a social networking platform for professionals. It was founded in 2002 by Reid Hoffman and others, launched in 2003, and listed on the New York Stock Exchange in 2011; after Microsoft acquired it for approximately $26.2 billion in 2016, it became a wholly owned Microsoft subsidiary. Its revenue comes from membership subscriptions, advertising, and recruitment solutions.Open the full entry: Public profile: https://www.linkedin.com/company/greptile/ (opens in a new window).⁠[13]