511 Ventures — Seed & Series A VC Firm ($250K–$2.5M Checks)
511 Ventures is a Seed, Series A venture capital firm based in Boston, MA investing in Deep Tech, SaaS, AI / ML. The firm typically writes $250K–$2.5M checks and has 1 portfolio company in our records.
- Check size
- $250K–$2.5M
- Portfolio
- 1 company on record
- Stage
- Seed, Series A
- Sectors
- Deep Tech, SaaS, AI / ML, Enterprise, Developer Tools
- HQ
- Boston, MA
- AUM
- Not in our records
Last verified: 2026-05-16
Seed, Series A
$250K – $2.5M
1+ companies
Investment Thesis
511 Ventures focuses on AI-enabled enterprise infrastructure and tools aimed at safety, stability, and optimization within high-consequence B2B verticals.
How 511 Ventures invests
511 Ventures is a vc firm based in Boston, MA. The firm invests at the Seed, Series A stages, with a focus on Deep Tech, SaaS, AI / ML, Enterprise, Developer Tools. It does not invest in Consumer, Media.
511 Ventures typically writes checks of $250K–$2.5M per investment.
511 Ventures has backed 1 company in our records, including Fortress AI.
Industry Focus
Invests In
Does Not Invest In
Portfolio Companies (1)
Other
Fortress AI
- •Raising at Seed, Series A? You're squarely in their sweet spot.
- •Lead with your fit in Deep Tech, SaaS, AI / ML — the sectors they actively back.
- •Size your ask to their typical $250K – $2.5M check.
- •cold outreach ok
- •A warm introduction beats a cold email. Get matched and request an intro.
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