Gravity has closed a $30.5 million Series A funding round co-led by Lightspeed Venture Partners and Committed Capital, pushing its total capital raised to $38.5 million, according to a report by The Next Web. The company operates a complete advertising infrastructure for AI applications, connecting brands that want to reach users inside conversational interfaces with developers looking to generate revenue from their assistants. Gravity's bet is that if AI chatbots become the next default entry point for online activity, someone will need to build and operate the ad marketplace behind them.
The platform already serves text advertisements within ChatGPT and a collection of smaller tools including Codebuff, EcoGPT, Daimon, Magneta, Runable, and CTO.new, the report states. On the advertiser side, clients include Best Buy, Target, Vercel, and MongoDB. Beyond traditional text placements, Gravity is piloting a second format designed for agent-to-agent transactions: brands provide product catalogues with specifications and current deals, and when an AI shopping agent queries a category on a user's behalf, it receives a curated list of relevant advertisers with detailed product information. The company intends to integrate direct payment functionality so agents can finalize transactions after user approval.
Cofounder Zach Oldham told Business Insider that the agent-to-agent model "helps enrich the buying decision," framing it as an advertising format aimed at software rather than people. The financial projections fueling investor interest are substantial: WPP Media projects marketers will allocate $100 billion to ads within generative AI search worldwide by 2030, while OpenAI separately forecasts its own advertising operation will reach $100 billion in revenue by the same year. ChatGPT launched ads in February and, according to the reporting, surpassed $100 million in annualized ad revenue within just two months.
That growth trajectory explains why infrastructure plays around AI advertising are attracting venture capital at all. The report notes, however, that Gravity hasn't disclosed its own revenue figures, its take rate from transactions, or the commercial arrangements it holds with ChatGPT and other assistant platforms. How agent-to-agent inventory will be labeled or presented to end users—the first question regulators are likely to ask—also remains unspecified. The critical question is whether smaller AI applications adopt Gravity as their default monetization layer while OpenAI retains control of its own ad inventory. If the long tail of developers turns to Gravity, it becomes a viable business; if OpenAI views third-party ad networks as competitors rather than partners, the path forward becomes significantly harder. The choice between building internal ad systems and outsourcing them will likely define which companies capture value in conversational interfaces and which become dependent on platform decisions beyond their control.