# Peer AI funding: rounds and investors

> Peer AI has raised $12M across 1 round since 2025. Investors include Y Combinator, Alumni Ventures and Gaingels. Every round with its source.

Source: https://millionrounds.com/company/peer-ai (Millionrounds; every figure on the page links to its filing or article)

United States · [Venture startup](https://millionrounds.com/companies)

# Who invested in *Peer AI*

One round we have observed, with the 7 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI

Funding summary Updated 26 Oct 2026

**$12M** raised across 1 round since 2025, from 1 source

- **Latest round:** Venture, $12M Oct 2025
- **Investors:** 7

See who backed them

## The rounds

- **Oct 2025** Venture **$12M** [Y Combinator](https://millionrounds.com/fund/y-combinator) [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Gaingels](https://millionrounds.com/fund/gaingels) [Greycroft](https://millionrounds.com/fund/greycroft) [SignalFire](https://millionrounds.com/fund/signalfire) [Mana Ventures](https://millionrounds.com/fund/mana-ventures) [Flare Capital](https://millionrounds.com/fund/flare-capital-partners) Source recorded

## Founders and team

From Peer AI's own website: 2 on the team.

- **Mid-Sized Biotech** Head of Medical Writing
- **Public Biopharma** Head of Medical Writing

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

[Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **1** round

[Gaingels](https://millionrounds.com/fund/gaingels) Private equity **1** round

[Greycroft](https://millionrounds.com/fund/greycroft) VC firm **1** round

[SignalFire](https://millionrounds.com/fund/signalfire) VC firm **1** round

[Mana Ventures](https://millionrounds.com/fund/mana-ventures) VC firm **1** round

[Flare Capital](https://millionrounds.com/fund/flare-capital-partners) VC firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=peer-ai).

## Quick answers about Peer AI

### Who invested in Peer AI?

Peer AI's investors include Y Combinator, Alumni Ventures, Gaingels, Greycroft and SignalFire, and 2 more on record.

### How much has Peer AI raised?

Peer AI has raised $12M across 1 round since 2025.

### When did Peer AI last raise?

Peer AI's most recent round was a Venture of $12M in Oct 2025.

### What was Peer AI's biggest round?

Its most recent round, $12M in Oct 2025, is also its largest on record.

### Who backed Peer AI first?

Peer AI's first round on record, in Oct 2025, was backed by Y Combinator, Alumni Ventures and Gaingels and 4 others.

### What stage is Peer AI at?

Peer AI's latest named round is a Venture, in Oct 2025.

### Where is Peer AI based?

Peer AI is based in the United States.

## Companies like Peer AI

In the same sector, and raised in the last eighteen months.

[**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Pika** $216M · Oct 2026](https://millionrounds.com/company/pika)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor)

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