# Rewind AI funding: rounds and investors

> Rewind AI has raised $18M across 1 round since 2023. Investors include Andreessen Horowitz, First Round Capital and Sam Altman. Every round with its source.

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

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

# Who invested in *Rewind AI*

One round we have observed, with the 3 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

**$18M** raised across 1 round since 2023, from 1 source

- **Latest round:** Series A, $18M Jan 2023
- **Investors:** 3

See who backed them

## The rounds

- **Jan 2023** Series A **$18M** [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [First Round Capital](https://millionrounds.com/fund/first-round-capital) [Sam Altman](https://millionrounds.com/fund/sam-altman) Source recorded

## Founders and team

From the SEC filings it signed: 1 on the team.

- **Dan Siroker** Executive Officer, Director i

## Everyone who backed them

[Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) VC firm **1** round

[First Round Capital](https://millionrounds.com/fund/first-round-capital) VC firm **1** round

[Sam Altman](https://millionrounds.com/fund/sam-altman) Angel **1** round

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

## Also claim to have backed them

This firm lists Rewind AI as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Biarritz Ventures](https://millionrounds.com/fund/biarritz-ventures) VC firm Per its own site

## Quick answers about Rewind AI

### Who invested in Rewind AI?

Rewind AI's investors include Andreessen Horowitz, First Round Capital and Sam Altman.

### How much has Rewind AI raised?

Rewind AI has raised $18M across 1 round since 2023.

### When did Rewind AI last raise?

Rewind AI's most recent round was a Series A of $18M in Jan 2023.

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

Its most recent round, $18M in Jan 2023, is also its largest on record.

### Who backed Rewind AI first?

Rewind AI's first round on record, in Jan 2023, was backed by Andreessen Horowitz, First Round Capital and Sam Altman.

### What stage is Rewind AI at?

Rewind AI's latest named round is a Series A, in Jan 2023.

### Where is Rewind AI based?

Rewind AI is based in the United States.

## Companies like Rewind 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)

## Find investors like these

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