Gravity

Gravity

Real-time contextual advertising platform for AI

Overview

Gravity provides an AI-native advertising network that monetizes LLM conversations by delivering contextual ads within AI responses with zero added latency. It offers Node.js and Python SDKs and a REST API so developers of AI tools can integrate advertising revenue streams into their platforms. The system analyzes conversations in real time to detect purchase intent and runs a live auction to surface native, sponsored suggestions relevant to the context. Advertisers manage campaigns via a self-serve platform and use measurement tools to track performance, with Gravity’s goal of subsidizing free or lower-cost AI access through ad revenue.

Launched Recently
Funded Recently

About Gravity

Simplify's Rating
Why Gravity is rated
C
Rated C on Competitive Edge
Rated B on Growth Potential
Rated D+ on Differentiation

Industries

Data & Analytics

Enterprise Software

AI & Machine Learning

Company Size

N/A

Company Stage

Series A

Total Funding

$30.5M

Headquarters

San Francisco, California

Founded

2025

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Simplify's Take

What believers are saying

  • Gravity said on August 6, 2026 it raised $30.5 million from Lightspeed and Committed Capital.
  • Its LinkedIn post on August 6, 2026 claimed 14.3 million people got free AI access.
  • Best Buy, Target, Vercel, and MongoDB validate advertiser demand across premium brands.

What critics are saying

  • OpenAI plans U.S. ad tests in 2026, directly competing with Gravity's core inventory.
  • OpenAI's ad policies block sensitive categories, shrinking Gravity's highest-margin intent inventory.
  • If ChatGPT and other model owners build native ad stacks, Gravity loses distribution by 2027.

What makes Gravity unique

  • Gravity monetizes AI conversations with native ads inside ChatGPT, Codebuff, Magneta, and Runnable.
  • Its full-stack platform combines DSP, SSP, exchange, measurement, and creative generation.
  • Founded by Zach and Leo Martinez in 2025, it targets zero-latency parallel ad delivery.

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Funding

Total Funding

$30.5M

Above

Industry Average

Funded Over

1 Rounds

Notable Investors:
Series A funding typically happens when a startup has a product and some customers, and now needs funding to scale. This money is usually used to grow the team, expand marketing, and improve the product. Venture capital firms are frequently the main investors here.
Series A Funding Comparison
Above Average

Industry standards

$15M
$8.2M
Discord
$15M
Canva
$30M
Kalshi
$30.5M
Gravity

Benefits

Health Insurance

Company Equity

Company News

Business Insider
Aug 6th, 2026
A startup that places ads for brands like Best Buy and Target in AI platforms raised $30.5 million

Gravity places ads in AI platforms, including ChatGPT, Codebuff, Magneta, and Runnable. It has begun exploring agent-to-agent ads.

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