# Openspec funding: rounds and investors

> Openspec has raised across 1 round since 2026. Investors include Y Combinator and Pioneer Fund. Every round with its source.

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

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

# Who invested in *Openspec*

One round we have observed, with the 2 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

Raised 8 months ago

Funding summary Updated 26 Oct 2026

**Undisclosed** raised across 1 round since 2026, from 1 source

- **Latest round:** Venture Mar 2026
- **Investors:** 2

See who backed them

## The rounds

- **Mar 2026** Venture **Amount undisclosed** [Y Combinator](https://millionrounds.com/fund/y-combinator) [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) Source recorded

## Everyone who backed them

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

[Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) Private equity **1** round

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

## Also claim to have backed them

This firm lists Openspec 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.

[Kayak Ventures](https://millionrounds.com/fund/kayak-ventures) Angel network Per its own site

## Quick answers about Openspec

### Who invested in Openspec?

Openspec's investors include Y Combinator and Pioneer Fund.

### How much has Openspec raised?

Openspec has raised 1 round since 2026, none with a disclosed amount.

### When did Openspec last raise?

Openspec's most recent round was a Venture in Mar 2026.

### Who backed Openspec first?

Openspec's first round on record, in Mar 2026, was backed by Y Combinator and Pioneer Fund.

### What stage is Openspec at?

Openspec's latest named round is a Venture, in Mar 2026.

### Where is Openspec based?

Openspec is based in the United States.

## Companies like Openspec

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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