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Inkbox raises $5.3M seed round led by Peak XV to build cloud-hosted AI agents with persistent computers and real communication channels.

PRIVATENov 10, 2026

Amount Raised

$5.3 Million

Round Type

Seed

San FranciscoSoftwareArtificial IntelligenceMessagingSaaS

Investors

Dan LevineCristina CordovaJonathan FrankleHenri SternGuillermo RauchPeak XV Partners

Description

Inkbox, a Y Combinator Summer 2026 company, closed a $5.3 million seed round led by Peak XV. The San Francisco startup launched cloud-hosted AI agents that retain files, tools, and context between sessions on their own persistent computers. The agents integrate with email, iMessage, WhatsApp, and Slack, and can self-activate when receiving messages or tasks. The round included participation from Guillermo Rauch, Henri Stern, Jonathan Frankle, Cristina Cordova, and Dan Levine.

Quick answer

Inkbox raised $5.3 Million in a Seed round, dated November 10, 2026. Investors: Dan Levine, Cristina Cordova, Jonathan Frankle, Henri Stern, Guillermo Rauch and Peak XV Partners. Inkbox is based in San Francisco, California, United States.

How much did Inkbox raise?
Inkbox raised $5.3 Million in a Seed round on November 10, 2026.
Who invested in Inkbox?
Dan Levine, Cristina Cordova, Jonathan Frankle, Henri Stern, Guillermo Rauch and Peak XV Partners are named as investors in this round.
What does Inkbox do?
Inkbox is a Y Combinator-backed startup that provides cloud-hosted AI agents with persistent computers.
Where is Inkbox based and how big is it?
Inkbox is based in San Francisco, California, United States.

Source: Fundz verified event record.

Who else raised in Messaging and SaaS around the same time

Companies in the same sectors as Inkbox that raised within 45 days of this round, from Fundz verified event records.

  • Gaio raised $1M (Seed) on October 27, 2026.
  • Omnichat raised $10M (Series A) on October 26, 2026.
  • Karta AI raised $3M (Seed) on October 22, 2026.
  • Siena AI raised $17M (Series A) on October 6, 2026.
  • Sumary raised $25M (Seed) on November 10, 2026.
  • Agent F raised $4M (Pre-Seed) on November 10, 2026.

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Company Information

Company

Inkbox

Location

San Francisco, California, United States

About

Inkbox is a Y Combinator-backed startup that provides cloud-hosted AI agents with persistent computers. Each agent maintains its own files, tools, and context across sessions and can be reached through multiple communication channels including email, iMessage, WhatsApp, and Slack. The platform includes security features like credential vaults and secure real-world channels for agent operations. Agents can handle scheduled tasks, recurring jobs, and automatically activate when receiving messages.

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