LegalOS is an AI-native immigration law firm that combines AI technology with legal expertise drawn from analysis of 12,000 successful petitions to deliver high-quality visa applications in roughly 48 hours. Its specialized AI agents draft petition narratives, compile evidence, and anticipate USCIS objections, with every case reviewed by licensed immigration attorneys. The firm reports a 100% approval rate and supports visa categories including O-1, H-1B, L-1A/B, TN, EB-1A, EB-1C, and EB-2 NIW. LegalOS is part of Y Combinator's Winter 2026 batch.
LegalOS
ActiveThe AI-Native Immigration Law Firm
Total raised
$500K
1 round
Stage
Seed
Jan 2026
Team
1-10
since 2026
Pricing
—
Founded
2026
San Francisco, United States
Agent-ready
—
AI agents that draft visa petition narratives
Automated evidence compilation for petitions
AI trained on analysis of 12,000 successful petitions
Anticipates and preempts common USCIS objections
Roughly 48-hour drafting turnaround for petitions
Licensed immigration attorney review on every case
Supports O-1, H-1B, L-1A/B, TN, EB-1A, EB-1C, and EB-2 NIW categories
AI-native law firm model combining software with legal expertise
12/100
Early
MCP server
Public API
Webhooks
OAuth 2.0
SDKs
No public agent surfaces detected yet.
Jan 2026 Seed $500K ● Y Combinator
Capital network
$500K raised ·1 backer·10 network links
- Backers1
- Shared portfoliocompanies these backers also fund
- Extended networkfunds that co-invest alongside them
Eudia
AI-augmented intelligence platform for legal teams
AI Legal
Harvey
The AI platform for elite law firms.
AI ProductivityAI Legal
Enter
AI to manage corporate litigation in Brazil's complex legal system
AI AgentsAI Legal
Supio
Agentic legal AI for personal injury and mass tort plaintiff firms
AI Legal
Patlytics
AI-native platform for the entire patent lifecycle, from drafting to infringement analysis.
AI Legal
GC AI
AI Legal
- Is LegalOS an actual law firm?
- Yes. It describes itself as an AI-native immigration law firm where licensed immigration attorneys review every case, with AI agents handling much of the drafting and evidence work.
- How fast can LegalOS draft a petition?
- The firm reports drafting visa petitions in roughly 48 hours using AI agents trained on thousands of successful petitions, with attorney review before filing.
- Which visa types does LegalOS support?
- It supports categories including O-1, H-1B, L-1A/B, TN, EB-1A, EB-1C, and EB-2 NIW.
- Does LegalOS guarantee approval?
- The firm reports a 100% approval rate to date, but immigration outcomes ultimately depend on USCIS, so no provider can guarantee approval.
Discussion
Sign in to join the discussion.
Sign inExplore more around LegalOS
Contextual paths to related AI startups, deals and rankings.