TL;DR: The closest YC-backed alternatives to <strong>Orthogonal</strong> are other Y Combinator B2B companies, especially from the Winter 2026 batch. Below are 20 ranked competitors with batch, status, and team size.
Y Combinator-backed B2B companies similar to Orthogonal (YC Winter 2026).
Last verified:
General LegalYC Winter 2026 · Active · 25 people— Elite AI law firm for high growth companies
DiditYC Winter 2026 · Active · 16 people— Infrastructure for identity and fraud.
LuelYC Winter 2026 · Active · 12 people— Turning everyday words and actions into usable training data.
RevionYC Winter 2026 · Active · 10 people— Intelligence for Automotive Operations
MoritzYC Winter 2026 · Active · 10 people— Global AI-native law firm handling legal work with same-day turnaround
LanceYC Winter 2026 · Active · 10 people— AI Agents That Run Hotel Operations.
Samora AIYC Winter 2026 · Active · 8 people— Multilingual voice agents that outperform humans
Hex SecurityYC Winter 2026 · Active · 7 people— Agentic Offensive Security at Scale
OvershootYC Winter 2026 · Active · 5 people— AI Infra for real-time vision applications
FixtureYC Winter 2026 · Active · 5 people— An AI-first CRM built for Startups
WaycoYC Winter 2026 · Active · 5 people— AI operator for medlegal cases
Vector LegalYC Winter 2026 · Active · 5 people— A premier AI-native law firm & legal operating system for Startups.
ModaYC Winter 2026 · Active · 5 people— The monitoring layer your AI agents need.
Piris LabsYC Winter 2026 · Active · 4 people— Inference at Light Speed
CarsonYC Winter 2026 · Active · 4 people— Carson is a desktop AI app that generates custom, sharable workspaces
Terminal UseYC Winter 2026 · Active · 4 people— Vercel for background agents
PolymorphYC Winter 2026 · Active · 4 people— Building the future of the consumer internet
AvoiceYC Winter 2026 · Active · 4 people— Harvey for Architecture
PerfectlyYC Winter 2026 · Active · 4 people— The AI-native Recruiting OS
CompresrYC Winter 2026 · Active · 4 people— LLM context compression for better accuracy