Ando launched out of stealth Thursday with $20 million in pre-seed and seed funding and a pitch aimed squarely at Slack: a team messaging app built from the ground up for AI agents and humans to work together as peers. Accel, Index Ventures, and Emergence led the round. Founder Sara Du says the product is a full replacement for Slack and Microsoft Teams, not a plug-in.
Du started building Ando after spending 2025 helping companies stand up MCP servers. Customers kept asking how to use AI agents from inside Slack, and every workaround ran into the same walls — shuttling messages back and forth, feeding agents the right context, and burning tokens to do it.
“The deeper I went, the more I felt Slack and Teams were built for a world that was starting to pass us by.”— Sara Du, Ando founder
Her diagnosis was structural. In Ando's design, agents get their own identities and inboxes and participate in channels, DMs, group chats, and transcribed live calls the same way employees do. They can browse channels, pick which ones to join, and message a human directly when they think someone needs to know something — no human approval loop, no @-mention required.
Key facts
- 01Ando exited stealth Thursday with $20 million in pre-seed and seed funding from Accel, Index Ventures, and Emergence.
- 02The platform gives AI agents their own identities, inboxes, and the ability to join channels, DMs, and live calls without human prompting.
- 03Ando is working with software, real estate, and finance customers across 15 countries, though most teams are small.
- 04Founder Sara Du pitches Ando as a full replacement for Slack and Microsoft Teams, not an add-on.
The competitive field is already crowded with incumbents racing to bolt agents onto legacy chat. Slack has turned its native bot into an AI agent. Microsoft has wired Copilot deep into Teams and the rest of Office 365. Jack Dorsey, the Twitter and Block co-founder, launched Buzz earlier this year with a similar humans-plus-agents pitch, though aimed at developers.
Du's bet is that retrofitting is harder than starting fresh. Legacy platforms treat agents as installable apps sitting outside the conversation, forcing a human to relay their output — what Du calls the "meat proxy" problem. Ando's design deletes that intermediary.
Early demos landed poorly. Prospects couldn't get past the fact that a new messaging platform, on its face, is a worse messaging platform than Slack.
“A lot of people we showed it to early on were understandably unimpressed. It was, in many respects, just a jankier messaging platform.”— Sara Du, Ando founder
The turn came when customers started using Ando for longer sessions and agents started doing things that weren't in the spec. Du described an agent noticing two separate channel conversations about the same problem, spinning up a group chat unprompted, briefing the participants, and proposing a decision. She said agents can process far more messages in a short window than humans can, which changes what "managing a thread" looks like.
Ando now has customers in software, real estate, and finance across 15 countries. Most of those teams are small, which fits Du's thesis: agents let a handful of people cover the execution, research, and coordination work that used to require a much larger headcount, while humans concentrate on judgment and strategy. The new capital goes to hiring and to token spend.
“I think agents will let very small teams operate at a scale that previously required hundreds of people.”— Sara Du, Ando founder
The uphill part is real. Slack and Teams are entrenched inside enterprise procurement, security review, and compliance workflows that a two-year-old startup cannot shortcut. Agent-native features are also the exact roadmap item every incumbent is currently shipping, which means Ando's window to prove the greenfield approach is faster and cleaner than the retrofit is measured in quarters, not years.
The interesting bet inside Ando's round isn't the Slack-killer framing — that's been tried since the day Slack IPO'd. It's the wager that the unit of work in software companies is shifting from the human employee to the agent, and that whichever collaboration surface owns agent identity and agent-to-agent context becomes the new system of record. If Du is right, Accel and Index just bought a seat at a category that doesn't fully exist yet. If she's wrong, Slack ships the same features in an update and Ando becomes an acquisition.
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