# Infinity Box funding: rounds and investors

> Infinity Box has raised $913K across 3 rounds since 2006. Investors include Y Combinator, Paul Buchheit and Rainmatter by Zerodha. Every round with its source.

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

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

# Who invested in *Infinity Box*

3 rounds we have observed, with the 4 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Chemicals & Materials

Funding summary Updated 26 Oct 2026

**$913K** raised across 3 rounds since 2006, from 3 sources

**$18K** Seed **$100K** Seed **$795K** Seed

- **Latest round:** Seed, $795K Oct 2022
- **Step-up i:** 8×
- **Investors:** 4

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2006 2009 2012 2015 2018 2021

**$18K** Seed

**$100K** Seed

**$795K** Seed

- **First round:** Seed, $18K
- **Biggest round:** $795K
- **Usual gap between rounds:** 16.5 years

## The rounds

- **Oct 2022** Seed **$795K** *1 new* [Rainmatter by Zerodha](https://millionrounds.com/fund/rainmatter-by-zerodha) Source recorded
- **Apr 2006** Seed **$100K** *2 new* [Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) [Paul Graham](https://millionrounds.com/fund/paul-graham) Reported by mixergy.com
- **Jan 2006** Seed **$18K** *1 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) Reported by wufoo.com

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Seed** 2006 **Seed** 2006 **Seed** 2022 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) [Rainmatter by Zerodha](https://millionrounds.com/fund/rainmatter-by-zerodha) [Paul Graham](https://millionrounds.com/fund/paul-graham)

## The exit

Exit Buyer Price When

Acquired SurveyMonkey $35M Apr 2011

From historical deal records. Wrong? [Tell us](https://millionrounds.com/corrections?slug=infinity-box).

## Everyone who backed them

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

[Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) Angel **1** round

[Rainmatter by Zerodha](https://millionrounds.com/fund/rainmatter-by-zerodha) Corporate VC **1** round

[Paul Graham](https://millionrounds.com/fund/paul-graham) VC firm **1** round

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

## Quick answers about Infinity Box

### Who invested in Infinity Box?

Infinity Box's investors include Y Combinator, Paul Buchheit, Rainmatter by Zerodha and Paul Graham.

### How much has Infinity Box raised?

Infinity Box has raised $913K across 3 rounds since 2006.

### When did Infinity Box last raise?

Infinity Box's most recent round was a Seed of $795K in Oct 2022.

### What was Infinity Box's biggest round?

Its most recent round, $795K in Oct 2022, is also its largest on record.

### Who backed Infinity Box first?

Infinity Box's first round on record, in Jan 2006, was backed by Y Combinator.

### What stage is Infinity Box at?

Infinity Box's latest named round is a Seed, in Oct 2022.

### Where is Infinity Box based?

Infinity Box is based in the United States.

## Companies like Infinity Box

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

[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**Albert** $57M · Oct 2026](https://millionrounds.com/company/albert)[**Azulene Labs** $3.4M · Sept 2026](https://millionrounds.com/company/azulene-labs)[**Critical Materials Group** $10M · Sept 2026](https://millionrounds.com/company/critical-materials-group)[**Rise Reforming** $500K · Sept 2026](https://millionrounds.com/company/rise-reforming)[**Fluxnium** $7.0M · Sept 2026](https://millionrounds.com/company/fluxnium)

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