Photon raises $4.5M to replace mobile apps with messaging agents

Photon, a startup helping developers build AI agents that run over iMessage and WhatsApp, has raised $4.5 million in seed funding. The round was co-led by Gradient and A*, with participation from Vercel, HongShan and others. The company says it has over 40,000 developer sign-ups and grew revenue 10x in four months.

• $4.5M seed round co-led by Gradient and A*
• Over 40,000 developer sign-ups, revenue up 10x in four months
• Platform offers 99.95% uptime, SOC 2 Type II and HIPAA compliance
• Customers include Corgi Insurance, Boardy, Ditto, Rho and Fliptexts