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D

Dex

Pre-Seed
www.joindex.comB2BSan Francisco, CA, USA
Market index

Market 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 Information may be incomplete or outdated — verify independently before making decisions.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.

Beta

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 Research may be incomplete, outdated, or incorrect.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.

Investor read

Evidence-bound summary — expand sections for movement, risks, and signals.

Memo snapshot · May 20, 2026, 5:48 PM

Beta

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 Research may be incomplete, outdated, or incorrect.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.

What they do

Dex (ThirdLayer) | Y Combinator Winter 2025 batch; AI coworker Chrome extension from ThirdLayer.

Funding

Latest: Pre-seed (Jan 2025). Investors: Y Combinator. (High).

Quick read

  • •Dex (ThirdLayer) | Y Combinator Winter 2025 batch; AI coworker Chrome extension from ThirdLayer.
  • •Sector narrative limited in indexed snippets; verify on primary sources (ycombinator.com).
  • •Indexed activity snapshot: 1 funding‑related row(s), 0 hiring‑related, 0 GitHub‑tagged, 0 product/news‑style — scoring reflects corpus coverage only.

Stage

Seed (YC)

Evidence summary

Verified facts

  • •Dex (ThirdLayer) | Y Combinator Winter 2025 batch; AI coworker Chrome extension from ThirdLayer.
  • •Sector narrative limited in indexed snippets; verify on primary sources (ycombinator.com).
  • •Indexed activity snapshot: 1 funding‑related row(s), 0 hiring‑related, 0 GitHub‑tagged, 0 product/news‑style — scoring reflects corpus coverage only.

Recent movers

  • •May 20, 2026 · ycombinator.com — Dex (ThirdLayer) | Y Combinator
  • •May 20, 2026 · ycombinator.com — Dex (ThirdLayer) | Y Combinator
  • •Y Combinator

Funding

Latest: Pre-seed (Jan 2025). Investors: Y Combinator. (High).

Hiring

No hiring/careers evidence indexed (Low).

GitHub

No GitHub‑linked evidence indexed (Low).

Product / news

Limited product/news coverage in corpus (Low).

Traffic / social

No traffic/social evidence indexed (Low).

Funding & hiring signals

funding_articleMay 20, 2026Confidence: high

Dex (ThirdLayer) | Y Combinator

Winter 2025 batch; AI coworker Chrome extension from ThirdLayer.

Affected score: yesObserved: May 20, 2026Round: Pre-Seed
raisedpre-seed

Open roles (indexed)

No open roles indexed yet.

Failed or blocked links

  • socialnot_found
    Last checked Wed, May 20, 08:04 AM

    Dex:reddit_credentials_not_configured

  • trafficnot_found
    Last checked Wed, May 20, 08:04 AM

    traffic_source_disabled_compliance

  • product_huntnot_found
    Last checked Wed, May 20, 08:04 AM

    product_hunt_search_disabled_compliance

  • hiringblocked
    Last checked Wed, May 20, 08:04 AM

    careers_blocked

  • fundingnot_found
    Last checked Wed, May 20, 08:04 AM

    discovery:google:google_cse_not_configured

  • public_page:pressnot_found
    Last checked Wed, May 20, 08:04 AM
  • public_page:newsroomnot_found
    Last checked Wed, May 20, 08:04 AM
  • public_page:investorsnot_found
    Last checked Wed, May 20, 08:04 AM
  • public_page:productnot_found
    Last checked Wed, May 20, 08:04 AM
  • public_page:productsnot_found
    Last checked Wed, May 20, 08:04 AM
  • public_page:aboutnot_found
    Last checked Wed, May 20, 08:04 AM
  • public_page:teamnot_found
    Last checked Wed, May 20, 08:04 AM
DealFlow growth score
34.0Limited recent public signal
7D+0%
30D+0%
Needs Review

The score is an algorithmic estimate based on observed public company-level signals. It may be incomplete, stale, or inaccurate and is not investment, legal, tax, or business advice.

Source health

  • githubok
    Last checked Wed, May 20, 08:04 AM
  • public_page:pricingok
    Last checked Wed, May 20, 08:04 AM
  • public_page:homeok
    Last checked Wed, May 20, 08:04 AM
  • public_page:blogok
    Last checked Wed, May 20, 08:04 AM
  • public_market_enrichmentok
    Last checked Tue, May 19, 06:14 PM
  • public_page:_blogok
    Last checked Tue, May 19, 06:14 PM
  • public_page:_ok
    Last checked Tue, May 19, 06:14 PM

DealFlow score momentum

347D +030D +0
100500
2026-05-20: 34

More runs will build history.

The score is an algorithmic estimate based on observed public company-level signals. It may be incomplete, stale, or inaccurate and is not investment, legal, tax, or business advice.

Signal breakdown

Latest momentum signal per category. Expand a card to inspect raw payloads.

Public source summary

Total evidence rows
7
Latest evidence
Wed, May 20, 05:48 PM

Source types found

blogcompany_sitefunding_articleofficial_sitepress

Strongest / recent news-style rows

  • Dex (ThirdLayer) | Y Combinator

    Wed, May 20, 05:48 PM · confidence 88%high quality

    https://www.ycombinator.com/companies/thirdlayer

Public signal timeline

Newest first · 7 event(s)

1
Wed, May 20, 05:48 PM · funding_article · 88% · verified_publichigh quality

Dex (ThirdLayer) | Y Combinator

Winter 2025 batch; AI coworker Chrome extension from ThirdLayer.

Source ↗
2
Wed, May 20, 05:48 PM · company_site · 85% · verified_publiclow quality

Dex – Your Second Brain in Chrome

AI browser copilot product homepage.

Source ↗
3
Wed, May 20, 05:48 PM · press · 85% · verified_publiclow quality

Dex by ThirdLayer on X

Official social account for product updates.

Source ↗
4
Wed, May 20, 08:04 AM · official_site · 75% · publiclow quality

/

Source: official_site

Dex — The self-driving workspace for operators Product Use Cases Pricing Blog Get Early Access The self-driving workspace for operators. Dex is AI with full operational memory across your entire workspace. Every datapoint is ingested, synced, and structured into compounding conte

Source ↗
5
Wed, May 20, 08:04 AM · official_site · 75% · publiclow quality

/blog

Source: official_site

Product Use Cases Pricing Blog Get Early Access All Blogs Release Notes Productivity Introducing the New Dex Release Notes · Apr 9, 2026 Important: Update Dex to Continue Usage Release Notes · Mar 23, 2026 Introducing Automations Release Notes · Mar 3, 2026 OpenClaw’s Wave on Age

Source ↗
6
Wed, May 20, 08:04 AM · official_site · 75% · publiclow quality

/pricing

Source: official_site

Pricing | Dex Product Use Cases Pricing Blog Get Early Access AI with your full operational knowledge. Rolling access · Limited spots Core Everything you need to get started $49 /month Monthly: 1.5M credits ✓ 3 integrations syncing to context system ✓ Automation runs & backgr

Source ↗
7
Tue, May 19, 06:14 PM · blog · 90% · publiclow quality

Dex – Your Second Brain in Chrome

Source: Blog / news

All Blogs - Shared science and news from the Dex team.

Source ↗

Funding / news

1 row(s)

funding_article·Wed, May 20, 05:48 PM·Confidence 88%high qualityverified_public

Dex (ThirdLayer) | Y Combinator

Winter 2025 batch; AI coworker Chrome extension from ThirdLayer.

https://www.ycombinator.com/companies/thirdlayer

Social

5 row(s)

company_site·Wed, May 20, 05:48 PM·Confidence 85%low qualityverified_public

Dex – Your Second Brain in Chrome

AI browser copilot product homepage.

https://www.joindex.com/
press·Wed, May 20, 05:48 PM·Confidence 85%low qualityverified_public

Dex by ThirdLayer on X

Official social account for product updates.

https://x.com/dexbythirdlayer
official_site·Wed, May 20, 08:04 AM·Confidence 75%low qualitypublic

/

Source name: official_site

Dex — The self-driving workspace for operators Product Use Cases Pricing Blog Get Early Access The self-driving workspace for operators. Dex is AI with full operational memory across your entire workspace. Every datapoint is ingested, synced, and structured into compounding conte

https://joindex.com/
official_site·Wed, May 20, 08:04 AM·Confidence 75%low qualitypublic

/blog

Source name: official_site

Product Use Cases Pricing Blog Get Early Access All Blogs Release Notes Productivity Introducing the New Dex Release Notes · Apr 9, 2026 Important: Update Dex to Continue Usage Release Notes · Mar 23, 2026 Introducing Automations Release Notes · Mar 3, 2026 OpenClaw’s Wave on Age

https://joindex.com/blog
official_site·Wed, May 20, 08:04 AM·Confidence 75%low qualitypublic

/pricing

Source name: official_site

Pricing | Dex Product Use Cases Pricing Blog Get Early Access AI with your full operational knowledge. Rolling access · Limited spots Core Everything you need to get started $49 /month Monthly: 1.5M credits ✓ 3 integrations syncing to context system ✓ Automation runs & backgr

https://joindex.com/pricing

Blog

1 row(s)

blog·Tue, May 19, 06:14 PM·Confidence 90%low qualitypublic

Dex – Your Second Brain in Chrome

Source name: Blog / news

All Blogs - Shared science and news from the Dex team.

https://www.joindex.com/blog/topic/all-posts

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