funding_articleConfidence: medium
Theorem raises $6M (VentureBeat)
$6M seed led by Khosla Ventures; YC, e14, SAIF, Halcyon, and angels participated.
Affected score: noObserved: May 20, 2026Amount: $6M
T
Theorem
SeedFunding signalMarket data is refreshed once per day from public sources. Information may be incomplete or outdated — verify independently before making decisions. This is not investment advice.
Investor read
Evidence-bound summary — expand sections for movement, risks, and signals.
Memo snapshot · May 20, 2026, 6:17 PM
Worth a meetingEvidence-bound analyst verdict
- •Funding: Raised $6M across 1 funding round. Latest: $6M Seed (Jan 2026). Investors: Khosla Ventures, Y Combinator, e14, SAIF, Halcyon.
- •Named backers in indexed sources: Khosla Ventures, Y Combinator, e14, SAIF.
- •Hiring: 2 hiring‑related row(s); role‑spam risk if mostly generic boards
- •Engineering: 1 GitHub‑linked row(s)
DealFlow OS uses public web data and automated enrichment. Research may be incomplete, outdated, or incorrect. Verify important information before making investment or outreach decisions.
TL;DR
UnknownTheorem Trustworthy-by-default AI coding via verification.
Funding
Raised $6M across 1 funding round. Latest: $6M Seed (Jan 2026). Investors: Khosla Ventures, Y Combinator, e14, SAIF, Halcyon. (High).
Quick read
- •Theorem Trustworthy-by-default AI coding via verification.
- •Reported angle: Catching bugs with fractional proofs | Theorem
Key signals
Funding
Raised $6M across 1 funding round. Latest: $6M Seed (Jan 2026). Investors: Khosla Ventures, Y Combinator, e14, SAIF, Halcyon. (High).
Hiring
2 hiring‑related row(s); role‑spam risk if mostly generic boards (High).
GitHub
1 GitHub‑linked row(s) (Low).
Product / news
6 product/news‑styled row(s); headline risk without filings (High).
Evidence summary
Verified facts
- •Theorem Trustworthy-by-default AI coding via verification.
- •Reported angle: Catching bugs with fractional proofs | Theorem
Recent movers
- •May 11, 2026 · Careers — Careers · Theorem
- •May 11, 2026 · Blog / news — Catching bugs with fractional proofs | Theorem
- •May 20, 2026 · venturebeat.com — Theorem raises $6M (VentureBeat)
+5 more in Recent movement below
- •May 11, 2026 · Careers — Careers · Theorem
- •May 11, 2026 · Blog / news — Catching bugs with fractional proofs | Theorem
- •May 20, 2026 · venturebeat.com — Theorem raises $6M (VentureBeat)
- •May 20, 2026 · theorem.dev — lf-lean blog
- •May 11, 2026 · Blog / news — Theorem
- •May 11, 2026 · Careers — Theorem
- •May 11, 2026 · GitHub (linked from site) — Theorem · GitHub
- •May 11, 2026 · Blog / news — Blog | Theorem
- •Khosla Ventures
- •Y Combinator
- •e14
- •SAIF
- •Halcyon
Suggested next steps
- ▸Open a founder conversation this month; validate traction claims against the indexed evidence.
- ▸Add to the active watchlist so new signals trigger alerts.
Funding & hiring signals
Open roles (indexed)
No open roles indexed yet.
Public index
214Activity 90/100Strong public activity signal
7D+84 (+64.6%)
30D+81 (+60.9%)
High Confidence
The index price and activity score are algorithmic estimates based on observed public company-level signals. They may be incomplete, stale, or inaccurate and are not investment, legal, tax, or business advice.
Source health
- githubokLast checked Sun, Jun 28, 07:55 PM
- hiringokLast checked Sun, Jun 28, 07:54 PM
- public_page:teamokLast checked Sun, Jun 28, 07:54 PM
- public_page:jobsokLast checked Sun, Jun 28, 07:54 PM
- public_page:homeokLast checked Sun, Jun 28, 07:54 PM
- public_page:newsokLast checked Sun, Jun 28, 07:54 PM
- public_page:pressokLast checked Sun, Jun 28, 07:54 PM
- public_page:newsroomokLast checked Sun, Jun 28, 07:54 PM
- public_page:investorsokLast checked Sun, Jun 28, 07:54 PM
- public_page:pricingokLast checked Sun, Jun 28, 07:54 PM
- public_page:productokLast checked Sun, Jun 28, 07:54 PM
- public_page:productsokLast checked Sun, Jun 28, 07:54 PM
- public_page:customersokLast checked Sun, Jun 28, 07:54 PM
- public_page:changelogokLast checked Sun, Jun 28, 07:54 PM
- public_page:aboutokLast checked Sun, Jun 28, 07:54 PM
- public_market_enrichmentokLast checked Mon, May 11, 04:50 AM
- public_page:_pressokLast checked Mon, May 11, 04:50 AM
- public_page:_newsokLast checked Mon, May 11, 04:50 AM
- public_page:_jobsokLast checked Mon, May 11, 04:50 AM
- public_page:_companyokLast checked Mon, May 11, 04:50 AM
- public_page:_careers_okLast checked Mon, May 11, 04:50 AM
- public_page:_careersokLast checked Mon, May 11, 04:50 AM
- public_page:_blog_lf-lean_okLast checked Mon, May 11, 04:50 AM
- public_page:_blog_catching-bugs-with-fractional-proofs_okLast checked Mon, May 11, 04:50 AM
- public_page:_blog_okLast checked Mon, May 11, 04:50 AM
- public_page:_blogokLast checked Mon, May 11, 04:50 AM
- public_page:_aboutokLast checked Mon, May 11, 04:50 AM
- public_page:_okLast checked Mon, May 11, 04:50 AM
Public source summary
- Total evidence rows
- 33
- Latest evidence
- Thu, Jul 2, 03:07 PM
Source types found
about_pageblogcareers_pagecompany_sitefunding_articlegithubhiringnewsofficial_siteotherpressproduct
Public signal timeline
Newest first · 33 event(s)
1
2
3
4
5
Thu, Jul 2, 03:07 PM · blog · 70% · publichigh qualityBlog | Theorem
Source ↗Source: Blog
Theorem research blog
6
7
Thu, Jul 2, 03:07 PM · careers_page · 90% · publichigh qualityCareers · Theorem
Source ↗Source: Careers page
Join Theorem — we’re building products to make software correct, understandable, and secure.
8
10
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityPress
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
11
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityOfficial site
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
12
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityAbout
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
13
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityTeam
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
14
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityJobs
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
15
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityNews
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
16
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityNewsroom
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
17
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityProduct
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
18
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityChangelog
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
19
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityInvestors
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
20
Sun, Jun 28, 07:54 PM · official_site · 75% · publichigh qualityProducts
Source ↗Source: official_site
Theorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
21
Wed, May 20, 06:17 PM · press · 85% · verified_publichigh qualitylf-lean blog
Source ↗350× faster Rocq-to-Lean translation milestone.
22
23
Wed, May 20, 06:17 PM · funding_article · 88% · verified_publichigh qualityTheorem raises $6M (VentureBeat)
Source ↗$6M seed led by Khosla Ventures; YC, e14, SAIF, Halcyon, and angels participated.
24
Mon, May 11, 04:50 AM · github · 72% · verified_publichigh qualityTheorem · GitHub
Source ↗Source: GitHub (linked from site)
GitHub presence linked from official site for Theorem.
25
26
Mon, May 11, 04:50 AM · blog · 90% · publichigh qualityCatching bugs with fractional proofs | Theorem
Source ↗Source: Blog / news
We introduce fractional proof decomposition, a technique for scaling testing compute logarithmically, instead of linearly, with bug rarity. We achieve this efficiency by fusing partial evaluation and property-based testing.
27
Sun, Jun 28, 07:55 PM · github · 55% · publicmedium quality@theoremts/core
Source ↗Source: npm_registry
Core engine for Theorem — parser, translator, solver, scanner, suggester
28
Sun, Jun 28, 07:55 PM · github · 55% · publicmedium qualitytheoremts-ts-plugin
Source ↗Source: npm_registry
TypeScript Language Service Plugin for Theorem — inline verification in VS Code
29
Sun, Jun 28, 07:55 PM · github · 55% · publicmedium qualitytheorem-prover
Source ↗Source: npm_registry
An automated theorem prover for first-order predicate logic written in TypeScript
30
Sun, Jun 28, 07:55 PM · github · 55% · publicmedium qualitytheoremts-plugins
Source ↗Source: npm_registry
Bundler plugins for Theorem — strip contracts at build time (vite, esbuild, tsup)
31
Sun, Jun 28, 07:55 PM · github · 55% · publicmedium qualitytheoremts-cli
Source ↗Source: npm_registry
CLI for Theorem — formal verification for TypeScript
33
Official / company site
12 row(s)
The company's own site — the authoritative description of what they sell and to whom. Marketing-controlled, so treat claims as positioning rather than verified traction.
official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
PressTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
Official siteTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
AboutTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
TeamTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
JobsTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
NewsTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
NewsroomTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
ProductTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
ChangelogTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
InvestorsTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗official_site·Sun, Jun 28, 07:54 PM·Confidence 75%high qualitypublic
ProductsTheorem Theorem. Careers Theorem is building AI that is as capable at program verification as it is at writing Python. Research lf-lean : The frontier of verified software engineering lf-lean is a verified translation from Rocq to Lean of all 1,276 statements…
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗company_site·Wed, May 20, 06:17 PM·Confidence 85%high qualityverified_public
TheoremTrustworthy-by-default AI coding via verification.
Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.
Open source ↗News
9 row(s)
Third-party press coverage. Independent reporting corroborates company claims; repeated coverage across outlets is a momentum signal.
product·Thu, Jul 2, 03:07 PM·Confidence 90%high qualitypublic
TheoremFormal verification and AI — research and engineering from Theorem.
Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗product·Thu, Jul 2, 03:07 PM·Confidence 90%high qualitypublic
TheoremFormal verification and AI — research and engineering from Theorem.
Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗news·Thu, Jul 2, 03:07 PM·Confidence 90%high qualitypublic
TheoremFormal verification and AI — research and engineering from Theorem.
Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗news·Thu, Jul 2, 03:07 PM·Confidence 90%high qualitypublic
TheoremFormal verification and AI — research and engineering from Theorem.
Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗about_page·Thu, Jul 2, 03:07 PM·Confidence 90%high qualitypublic
TheoremFormal verification and AI — research and engineering from Theorem.
Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗press·Wed, May 20, 06:17 PM·Confidence 85%high qualityverified_public
lf-lean blog350× faster Rocq-to-Lean translation milestone.
Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗about_page·Mon, May 11, 04:50 AM·Confidence 90%high qualitypublic
TheoremFormal verification and AI — research and engineering from Theorem.
Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗other·Sun, Jun 28, 07:54 PM·Confidence 50%medium qualitypublic
TheoremWhy it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗other·Sun, Jun 28, 07:54 PM·Confidence 50%medium qualitypublic
Theorema EgregiumWhy it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.
Open source ↗Funding / news
1 row(s)
Funding announcements and investor-database records. The strongest public signal of capitalization: round, amount, and syndicate quality when disclosed.
funding_article·Wed, May 20, 06:17 PM·Confidence 88%high qualityverified_public
Theorem raises $6M (VentureBeat)$6M seed led by Khosla Ventures; YC, e14, SAIF, Halcyon, and angels participated.
Why it matters: Funding signal — Seed per this source; verify against the linked original before relying on it.
Open source ↗Hiring
3 row(s)
Open roles and careers pages. Active hiring implies runway to spend and shows where the company is investing (engineering vs GTM vs ops).
hiring·Thu, Jul 2, 03:07 PM·Confidence 90%high qualitypublic
TheoremFormal verification and AI — research and engineering from Theorem.
Why it matters: Hiring signal — open roles imply runway to spend and show where the company is investing.
Open source ↗careers_page·Thu, Jul 2, 03:07 PM·Confidence 90%high qualitypublic
Careers · TheoremJoin Theorem — we’re building products to make software correct, understandable, and secure.
Why it matters: Hiring signal — open roles imply runway to spend and show where the company is investing.
Open source ↗hiring·Sun, Jun 28, 07:54 PM·Confidence 68%high qualitypublic
CareersWhy it matters: Hiring signal — 3 open role(s) indexed; hiring implies runway and shows growth priorities.
Open source ↗GitHub
6 row(s)
Public engineering activity. Sustained commits, releases, and stars indicate real product development and, for dev tools, developer adoption.
github·Mon, May 11, 04:50 AM·Confidence 72%high qualityverified_public
Theorem · GitHubGitHub presence linked from official site for Theorem.
Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.
Open source ↗github·Sun, Jun 28, 07:55 PM·Confidence 55%medium qualitypublic
@theoremts/coreCore engine for Theorem — parser, translator, solver, scanner, suggester
Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.
Open source ↗github·Sun, Jun 28, 07:55 PM·Confidence 55%medium qualitypublic
theoremts-ts-pluginTypeScript Language Service Plugin for Theorem — inline verification in VS Code
Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.
Open source ↗github·Sun, Jun 28, 07:55 PM·Confidence 55%medium qualitypublic
theorem-proverAn automated theorem prover for first-order predicate logic written in TypeScript
Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.
Open source ↗github·Sun, Jun 28, 07:55 PM·Confidence 55%medium qualitypublic
theoremts-pluginsBundler plugins for Theorem — strip contracts at build time (vite, esbuild, tsup)
Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.
Open source ↗github·Sun, Jun 28, 07:55 PM·Confidence 55%medium qualitypublic
theoremts-cliCLI for Theorem — formal verification for TypeScript
Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.
Open source ↗Blog
2 row(s)
Company blog and newsletters. Shipping cadence and technical depth of posts hint at product velocity and team quality.
blog·Thu, Jul 2, 03:07 PM·Confidence 70%high qualitypublic
Blog | TheoremTheorem research blog
Why it matters: Company publishing — post cadence and depth hint at product velocity.
Open source ↗blog·Mon, May 11, 04:50 AM·Confidence 90%high qualitypublic
Catching bugs with fractional proofs | TheoremWe introduce fractional proof decomposition, a technique for scaling testing compute logarithmically, instead of linearly, with bug rarity. We achieve this efficiency by fusing partial evaluation and property-based testing.
Why it matters: Company publishing — post cadence and depth hint at product velocity.
Open source ↗Private workspace
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