Probably

San Francisco, United States · Founded 2025 · $9.0M raised

Headquarters
San Francisco
Employees
1–10
Founded
2025
Business Model
B2B
Total Funding
$9.0M
Last Round
$9.0M SeedJun 2026
Rounds
1

About

Probably is an AI reliability startup building deterministic validators that check LLM outputs against source data before reaching users, targeting 99.99% accuracy for precision-sensitive applications. The company raised $9M seed from a16z and Accel.

Summary

Probably is an Artificial Intelligence company based in San Francisco, United States, founded in 2025. It has raised $9.0M in total across 1 round, most recently a $9.0M Seed round in Jun 2026. Investors include Andreessen Horowitz.

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Funding History

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