Resistant AI: Funding, Investors & Team (Sep 2026)
Resistant AI protects the machine learning system from adversarial manipulation and advanced fraud. We believe that responsible and systematic adoption of machine learning techniques can profoundly improve our lives. Our mission is to accompany our customers on this way and to ensure that the risks related to machine learning and AI adoption are responsibly detected, managed and resolved.
Resistant AI has raised $65.1M across 5 funding rounds on record, the most recent a Series B of $25.0M announced in Oct 2025.
That round is above the $5.5M median round size for Artificial Intelligence companies tracked on FundedIQ over the last two years.
Resistant AI Company Profile and Key Stats
Latest funding round on record: Oct 2025.
Resistant AI Funding Rounds
1 of 5 rounds was announced without a disclosed amount and is excluded from the total.
Resistant AI raised $12.5M in an undisclosed round announced in Jun 2021.
4 months later, a Series A of $16.6M was announced in Oct 2021.
1.7 years later, a Series A of $11.0M was announced in Jun 2023.
2.1 years later, an undisclosed round was announced in Jul 2025 with no disclosed amount.
3 months later, a Series B of $25.0M was announced in Oct 2025.
Resistant AI Founders and Leadership Team
Contact details for the Resistant AI team: 4 of 4 have an email address on file.
Start 14-day free trial →Resistant AI Funding Compared to Other Artificial Intelligence Startups
Resistant AI's latest round of $25.0M is above the median round in Artificial Intelligence. Medians cover the last 24 months of disclosed rounds.
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Resistant AI Funding FAQs
What does Resistant AI do?
Resistant AI protects the machine learning system from adversarial manipulation and advanced fraud. We believe that responsible and systematic adoption of machine learning techniques can profoundly improve our lives. Our mission is to accompany our customers on this way and to ensure that the risks related to machine learning and AI adoption are responsibly detected, managed and resolved.
How much funding has Resistant AI raised?
Resistant AI has raised $65.1M across 5 rounds on record. The most recent is a Series B of $25.0M announced in Oct 2025.
When did Resistant AI last raise funding?
Resistant AI's most recent funding round on record is a Series B of $25.0M, announced in Oct 2025.
Who founded Resistant AI?
FundedIQ lists Jan Jusko (Founder), Jan Stiborek (Founder), Martin Vejman (Founder) at Resistant AI.
Who is the CEO of Resistant AI?
Martin Rehak is listed as CEO at Resistant AI.
Where is Resistant AI headquartered?
Resistant AI is based in Prague, Hlavni Mesto Praha, Czech Republic.
How many employees does Resistant AI have?
Resistant AI is in the 101-250 employee band.
How does Resistant AI's funding compare to other Artificial Intelligence startups?
Resistant AI's latest round of $25.0M is above the $5.5M median round size for Artificial Intelligence companies on FundedIQ across 7,233 tracked companies over the last two years.
About FundedIQ's Resistant AI Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Resistant AI is left off this page rather than filled in.
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