Simulithic

Active · AI users that test your app on every device and browser

YC F26

Website YC profile

Why it ranks

How the rank works

7signal of 100 · rising 7

went through YCProgram · this site+4
team of 2Team size · YC's directory+2.5

A sum of public facts, not a judgement and not investment advice.

Competitors

Scott AIShared: made writing, writing code, stillYC F25New York CityStartup →Developer toolsAcquired

ReflectShared: writing code, test, maintainingYC S20VillanovaStartup →AIInactive

Squire.aiShared: writing codeYC S21San FranciscoStartup →Developer tools

SkyGiraffe SoftwareShared: writing code, device, through500 Global 2013IsraelStartup →

Companies closest to Simulithic
Company	Category	Status	Program
Scott AIShared: made writing, writing code, stillYC F25ActiveAI, Devtools	AI, Devtools	Active	YCF25
ReflectShared: writing code, test, maintainingYC S20AcquiredDevtools	Devtools	Acquired	YCS20
Squire.aiShared: writing codeYC S21InactiveAI, Devtools	AI, Devtools	Inactive	YCS21
SkyGiraffe SoftwareShared: writing code, device, through500 Global 2013Not statedDevtools	Devtools	Not stated	500 Global2013

Adjacent

Developer tools

CodeYamShared: infrastructure, shipSPC 2021DenverStartup →Other

WebsimShared: browserSPC 2024San FranciscoStartup →AI

Vibe KanbanShared: writing codeYC S21LondonStartup →AI

StarShared: writing codeYC S22SpringfieldStartup →Developer tools

App OnboardShared: writing code, user500 Global 2017VietnamStartup →

Companies next to Simulithic
Company	Category	Status	Program
CodeYamShared: infrastructure, shipSPC 2021Not statedDevtools	Devtools	Not stated	SPC2021
WebsimShared: browserSPC 2024Not statedOther	Other	Not stated	SPC2024
Vibe KanbanShared: writing codeYC S21ActiveAI, Devtools	AI, Devtools	Active	YCS21
StarShared: writing codeYC S22ActiveAI, Devtools	AI, Devtools	Active	YCS22
App OnboardShared: writing code, user500 Global 2017Not statedDevtools	Devtools	Not stated	500 Global2017

Also from F26 in AI

All of F26

CavemanCaveman cuts what AI agents cost without making them dumber.YC F26AmsterdamStartup →AI

HueTest agents in realistic worlds built from production usageYC F26San FranciscoStartup →AI

MaritimeThe managed cloud for AI agents.YC F26San FranciscoStartup →AI

RightNowCo-designing the fastest intelligenceYC F26San FranciscoStartup →AI

TiloThe Microsoft of the AI era: the operating system for AI agents.YC F26San FranciscoStartup →AI

WondersearchInstant semantic search over your data without embeddings.YC F26San FranciscoStartup →

Company	Category	Status
CavemanCaveman cuts what AI agents cost without making them dumber.ActiveAI, Devtools	AI, Devtools	Active
HueTest agents in realistic worlds built from production usageteam of 2ActiveAI, Devtools	AI, Devtools	Active
MaritimeThe managed cloud for AI agents.team of 3ActiveAI, Devtools	AI, Devtools	Active
RightNowCo-designing the fastest intelligenceteam of 2ActiveAI, Devtools	AI, Devtools	Active
TiloThe Microsoft of the AI era: the operating system for AI agents.team of 2ActiveAI, Devtools	AI, Devtools	Active
WondersearchInstant semantic search over your data without embeddings.team of 2ActiveAI, Devtools	AI, Devtools	Active

Founders

Ryan NingFounder/CEO
Satyam SinghFounder/CTO

About Simulithic

AI made writing code fast. Testing it is still slow. Simulithic sends AI users through your app on every device, browser and account type your customers use, so you can ship as fast as you can code, without writing or maintaining a single test.

YC batch: F26 · Fall 2026
Status, per YC: Active
Category: AI, Developer tools
Team size: 2
Location: San Francisco, CA, USA
Founded: 2026
Checked: 6h ago

YC tags: Developer Tools, Infrastructure, AI