---
title: "Ventures | Len P. van der Hof"
description: LPH98.ventures, MindSesh, ReasonKit, Undominated.ai, and LPH98.lifestyle — with fail-closed language on ReasonKit.
image: "https://lenvanderhof.com/photos/len-portrait-1.jpg"
---

Holding

# Ventures

The holding, a fiction imprint, and three live products, including the independent inference price index.

Founder, 2020–present

## LPH98.ventures

The incorporated strategic umbrella for technology ventures, investments and long-term value creation.

Open↗Founder

## MindSesh

Browser-based, neurobiologically grounded sessions for focus, NSDR, breathing and stress recovery.

Open↗Creator

## ReasonKit

A Rust-based reasoning engine for structured, auditable and verifiable AI workflows.

Open↗Creator

## Undominated.ai

Independent AI inference price index. Capability first, then price. Names the models that are both worse and dearer. No cut of inference.

Open↗Publisher

## LPH98.lifestyle

A fiction imprint for standalone novels that refuse to close. The live catalogue is at LPH98.lifestyle.

Open↗

ReasonKit is a Rust reasoning engine. Public claims stay fail-closed: no “production-ready for every stack” promise without an audit path. The product URL is reasonkit.sh; what is live there is what counts.

## Elsewhere

AboutWork with meUndominated.ai

```json
{
	"@context": "https://schema.org",
	"@graph": [
		{
			"@type": "CollectionPage",
			"@id": "https://lenvanderhof.com/ventures/#webpage",
			"url": "https://lenvanderhof.com/ventures/",
			"name": "Ventures | Len P. van der Hof",
			"description": "LPH98.ventures, MindSesh, ReasonKit, Undominated.ai, and LPH98.lifestyle — with fail-closed language on ReasonKit.",
			"inLanguage": "en",
			"isPartOf": {
				"@id": "https://lenvanderhof.com/#website"
			},
			"author": {
				"@id": "https://lenvanderhof.com/#person"
			},
			"breadcrumb": {
				"@id": "https://lenvanderhof.com/ventures/#breadcrumb"
			}
		},
		{
			"@type": "BreadcrumbList",
			"@id": "https://lenvanderhof.com/ventures/#breadcrumb",
			"itemListElement": [
				{
					"@type": "ListItem",
					"position": 1,
					"name": "Home",
					"item": "https://lenvanderhof.com/"
				},
				{
					"@type": "ListItem",
					"position": 2,
					"name": "Ventures",
					"item": "https://lenvanderhof.com/ventures/"
				}
			]
		}
	]
}
```