# Arcjet Labs

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/arcjet-labs

- Industry: Software
- Headquarters: San Francisco, US
- Website: www.arcjet.com
- Total disclosed funding: $8.5M
- Latest round: Series A (Apr 30, 2025)
- Investors on record: 3

## About

Based in California, US, and founded in 2023, Arcjet Labs, Inc. is a technology company that specializes in developing security solutions for software developers. In October 2025, Arcjet Labs, Inc. raised USD 8.3 million in series A funding co-led by new investor Plural and an individual investor, with participation from returning investors Andreessen Horowitz and Seedcamp. Individual investors also participated in the round.

Arcjet Labs, Inc. provides a security layer for modern web applications, enhancing protection against threats like SQL injection, XSS, and CSRF. Its range of products simplifies security implementation with features such as bot detection, rate limiting, and email validation. Developers can easily integrate these solutions into platforms like Next.js and Node.js, offering customizable protection for signup forms and API routes, along with local testing capabilities.

The company employs a subscription-based revenue model, providing various tiers: a free plan for personal use, a Pro plan at USD 25 per month for teams, and an Enterprise plan tailored for mission-critical applications.

The company will use the October 2025 funding to accelerate its product development of security platform built for developers creating modern applications.

## Funding rounds

- Series A, Apr 30, 2025, $8.5M — Andreessen Horowitz, Seedcamp, Plural

## Investors

- Andreessen Horowitz (https://capitalatlas.ai/funds/andreessen-horowitz) — Series A
- Seedcamp (https://capitalatlas.ai/funds/seedcamp) — Series A
- Plural (https://capitalatlas.ai/funds/plural) — Series A