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Axiomat (YC F26) — We make AI that never hallucinates

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Axiomat makes it impossible for AI agents to make mistakes when querying a company’s data. It formally verifies that the agents’ queries are correct before employees or customers rely on the answers.

Axiomat is a Y Combinator company in the Fall 2026 batch. Its directory entry describes it as: We make AI that never hallucinates. The founders listed are Ethan Kharitonov (Founder/CEO), Jack Naimer (Founder/COO), Elad Perlman (Founder/CTO) (Y Combinator directory entry, November 4, 2026).

6 more companies from YC Fall 2026 ↓

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Axiomat

New accelerator entry · 2026-11-04 · the record

Fall 2026
batch
3
people
Early
stage
United States of America
region
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What the record says

BatchFall 2026
Announced2026-11-04
StageEarly
StatusActive
Team size3
IndustryB2B
Sub-industryB2B
SectorsSaaS, Big Data, AI
RegionsUnited States of America, America / Canada
BasedSan Francisco, CA, USA
HiringNo
Sitehttps://www.axiomat.com
Previously known asSigniture, Signiture Inc.

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In their words

Axiomat makes it impossible for AI agents to make mistakes when querying a company’s data. It formally verifies that the agents’ queries are correct before employees or customers rely on the answers. It is becoming increasingly important for companies to rely on AI without the need for humans to manually check the answers. This has created a need for systems which can guarantee correctness without limiting the agent’s capabilities. Axiomat provides the infrastructure to prove that answers are correct, starting with data queries and analysis. It brings mathematical guarantees to the agents working with your data. The team brings direct experience solving AI hallucinations through Ethan’s work as an Applied Scientist at AWS, where he worked on formally verifying AI responses. They also bring research experience in AI, LLMs, and formal methods from EPFL, the University of Toronto, and Georgia Tech.

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Axiomat: Accepted into Y Combinator Fall 2026
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Permanent URL: https://mentionfox.com/funding/yc-axiomat
Last updated 2026-11-05
Primary record: Y Combinator directory entry
Axiomat (YC F26) — We make AI that never hallucinates. MentionFox, 2026-11-05. https://mentionfox.com/funding/yc-axiomat