Photon, a startup helping developers build agents that operate over iMessage and WhatsApp, has raised $4.5 million in seed funding co-led by Gradient and A*, with participation from Vercel and others. The company says it has signed up over 40,000 developers, grown revenue 10x in four months, and reports less than 3% churn. Co-founder and CEO Daniel Tian said the funding will support product development as the company bets users will prefer agents over installing apps.
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