Blok

What Blok does

Blok Intelligence Inc. is a San Francisco-based, privately held AI company that operates its product under the brand name Seldon. Seldon is a decision layer for product development that simulates how users will behave before a product ships, using AI-generated synthetic personas scored across the Big Five (OCEAN) personality traits. These personas are built from 1.2M+ real user sessions and ethnographic field research, and the company claims 87% behavioral fidelity to real users across end-to-end journeys. The platform is designed for Research, Product, and Engineering teams to validate concepts, predict adoption, identify friction, catch regressions, and test AI-powered experiences without running live user studies.

The company's go-to-market is sales-led and enterprise-focused, with direct demo booking CTAs and a dedicated trust center (SOC 2 Type II, SSO, governance, audit controls) to clear procurement at regulated buyers. Target customers are product teams inside healthcare, finance, and education organizations, where PHI, financial records, and student-data privacy rules constrain traditional user research. Seldon is delivered as a SaaS subscription; pricing tiers and contract values are not publicly disclosed.

Founded in 2024 with 11–50 employees, Blok is led by co-founders Olivia Higgs and Tom Charman. The company emerged from stealth in April 2026 alongside a $7.5M seed round co-led by MaC Venture Capital and Protagonist, with Blank Ventures, Correlation Ventures, Creative Destruction Lab (CDL), Karman Ventures, Rackhouse Venture Capital, and Weekend Fund also participating. No customers, ARR, or revenue figures have been disclosed.

Name

Blok

Legal name

Blok Intelligence Inc.

Website

https://joinblok.co

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

11–50 employees

Short description

Blok Intelligence Inc., operating as Seldon, provides AI-generated synthetic user personas modeled on Big Five personality traits to help enterprise product teams in healthcare, finance, and education validate product decisions before launch without exposing regulated data.

Ownership category

akta.pro rank

Product category

AI-Powered User Research Software

NAICS

Custom Computer Programming Services (541511), Computer Systems Design Services (541512)

SIC

Services-Computer Programming Services (7371)

akta.pro primary industry

B2B SaaS & Enterprise Personalization (CRM, Sales, Support) (HDAAAGAJ)

Keywords

• Synthetic user research
• Product decision validation
• AI user simulation
• Behavioral analytics platform
• Persona testing software

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Operations, Infrastructure

Revenue model

1. SaaS Platform Subscription: Subscription-based access to the Seldon platform for product decision validation, with enterprise-grade security and compliance features.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Blok (operating through its product Seldon) provides an AI-powered decision layer for product development that simulates user behavior before launch. The platform uses synthetic personas modeled from 1.2 million real user sessions plus ethnographic field research, scored across Big Five (OCEAN) personality traits, to surface bugs, friction, and insights. It enables product, research, and engineering teams in regulated industries to validate concepts, predict adoption, and test workflows without touching sensitive data.

Product overview

Blok Intelligence Inc. offers Seldon as its core product — a decision layer for product development that enables teams to simulate how users will behave before launching. Seldon uses synthetic personas modeled from 1.2M+ real sessions and ethnographic field research to provide an 87% behavioral fidelity rate. The platform serves Research, Product, and Engineering teams with capabilities for validating concepts, predicting adoption, identifying friction, and testing workflows. It is positioned for regulated, high-stakes industries (healthcare, finance, education) and includes enterprise-grade security with SOC 2 Type II compliance.

Differentiator

Problem solved

Functional benefit

Products and services

• Seldon Seldon is a decision layer for product development that simulates user behavior before launch. It uses AI-powered synthetic personas built from real user analytics and ethnographic research, scored across Big Five (OCEAN) personality traits, to surface bugs, friction, and insights. The platform enables product, research, and engineering teams in regulated industries to validate concepts, predict adoption, test workflows, and validate AI-powered experiences without live user research or exposure to sensitive data such as PHI, financial records, or student data.

Quantifiable outcome

• 87% behavioral fidelity compared to real human users across entire user journeys
• +3 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators4 records

Recent moves4 records

Expansion highlights5 records

Direct peers

• Maze: Maze is a leading continuous product discovery and user research platform that helps product teams validate concepts, run prototype tests, and gather user insights. Blok's Seldon competes directly in the AI-assisted product research category, especially after Maze's acquisition of Synthetic Users to add AI-generated research.
• Dovetail: Dovetail is a customer research and insights platform that centralizes user interviews, surveys, and feedback for product teams. It competes with Seldon for the research team's workflow and is increasingly layering AI synthesis features that overlap with Blok's value proposition.
• Sprig: Sprig delivers in-product user research through targeted surveys, feedback, and concept tests aimed at product and UX teams. Blok's Seldon competes for the same regulated-industry product teams seeking faster validation without live user exposure.
• Userlytics: Userlytics is an enterprise user experience research platform offering remote usability testing, card sorting, and surveys. It competes with Blok for enterprise research budgets and is beginning to add AI-assisted analysis features.
• Great Question: Great Question is an end-to-end user research platform built for product teams, with participant recruitment, interview scheduling, and a research repository. It targets the same enterprise research operations buyer that Seldon aims to displace with synthetic validation.

Broad incumbents

• UserTesting: UserTesting (now part of UserZoom under Bain) is an established incumbent in usability testing and human insights. It targets the same enterprise product and UX research buyer as Blok but relies on live panels rather than synthetic personas, making it a direct alternative rather than a complement.
• Hotjar: Hotjar provides heatmaps, session recordings, and on-site surveys for product and marketing teams. While broader and more analytics-oriented than Seldon, it overlaps in user behavior insights and is used by similar SMB-to-mid-market product buyers.

Emerging players

• Synthetic Users: Synthetic Users pioneered AI-generated synthetic research participants for rapid user studies. It directly mirrors Blok's core thesis of simulating user behavior rather than recruiting humans, though it has narrower depth on regulated-industry compliance.
• Looppanel: Looppanel is an AI-powered UX research repository that auto-transcribes and tags user interviews to surface insights. It competes with Seldon for the research team's time budget, particularly on the synthesis side of the workflow.
• Obviously AI: Obviously AI offers no-code AI-driven analytics and prediction tools aimed at business users. It is adjacent rather than directly competitive, but shares Blok's broader theme of AI-driven decision automation for non-technical teams.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/blokintel
• LinkedInlinkedin.com/company/blokai

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds1 record

Investors9 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Blok