# Fabius funding: rounds and investors

> Fabius has raised $500K across 1 round since 2023. Investors include Y Combinator. Every round with its source.

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

United States · [Pre-seed startup](https://millionrounds.com/companies)

# Who invested in *Fabius*

One round we have observed, with the one investor 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.

B2B

Y Combinator: W23

Funding summary Updated 26 Oct 2026

**$500K** raised across 1 round since 2023, from 1 source

- **Latest round:** Pre-seed, $500K Apr 2023
- **Investors:** 1

See who backed them

## The rounds

- **Apr 2023** Pre-seed **$500K** [Y Combinator](https://millionrounds.com/fund/y-combinator) Source recorded

## Everyone who backed them

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

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

## Quick answers about Fabius

### Who invested in Fabius?

Fabius's investors include Y Combinator.

### How much has Fabius raised?

Fabius has raised $500K across 1 round since 2023.

### When did Fabius last raise?

Fabius's most recent round was a Pre-seed of $500K in Apr 2023.

### What was Fabius's biggest round?

Its most recent round, $500K in Apr 2023, is also its largest on record.

### Who backed Fabius first?

Fabius's first round on record, in Apr 2023, was backed by Y Combinator.

### What stage is Fabius at?

Fabius's latest named round is a Pre-seed, in Apr 2023.

### Where is Fabius based?

Fabius is based in the United States.

## Companies like Fabius

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

[**MURAL** $67M · Oct 2026](https://millionrounds.com/company/mural)[**Different** $48M · Oct 2026](https://millionrounds.com/company/different)[**Dapta** $6.0M · Oct 2026](https://millionrounds.com/company/dapta)[**Amani Therapeutics** $60M · Oct 2026](https://millionrounds.com/company/amani-therapeutics)[**Relay** $207M · Oct 2026](https://millionrounds.com/company/relay)[**Bash Capital1** $5.7M · Sept 2026](https://millionrounds.com/company/bash-capital1)

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