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Sylvian

Pre-SeedFunding signal
www.ycombinator.com/companies/sylvianB2BSan 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 Information may be incomplete or outdated — verify independently before making decisions.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.

Investor read

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

Memo snapshot · Jun 28, 2026, 6:32 PM

Insufficient evidenceEvidence-bound analyst verdict
  • •Funding: YC funding
  • •Hiring: No information
  • •Engineering: No information
  • •Product/news: Launch of competition model

What would change this read

  • →Limited information on company operations and financials

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 Research may be incomplete, outdated, or incorrect.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

Seed (YC)

Sylvian develops specialized AI agents that gather expert tool-use data for Large Language Models (LLMs) via competitions.

Funding

YC funding

Quick read

  • •Utilizes a competition model to gather data
  • •Focuses on expert tool-use data for LLMs

Key signals

Funding

High

YC funding

Hiring

Low

No information

GitHub

Low

No information

Product / news

High

Launch of competition model

Traffic / social

Low

No information

Evidence summary

Verified facts

  • •Sylvian is a YC-backed company
  • •Sylvian gathers expert tool-use data for LLMs via competitions

Inferred (corpus-only)

  • •Sylvian's competition model may provide unique data for LLM training (interpretation of corpus)

Recent movers

  • •YC F25; launch of competition model (YC)
  • •YC F25; launch of competition model (YC)

Suggested next steps

  • ▸Run a manual rescrape or add sources before forming a view — the current corpus is too thin.

Funding & hiring signals

funding_articleConfidence: low

Sylvian | Y Combinator

YC F25; specialized AI agents gathering expert tool-use data for LLMs via competitions.

Affected score: noObserved: May 20, 2026

Weak funding evidence: mention does not include a parsed raise amount/round and may refer to non-funding context.

Open roles (indexed)

No open roles indexed yet.

Public index
46Activity 81/100Elevated public activity signal
7D-6 (-11.5%)
30D+6 (+15.0%)
Needs Review

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

  • public_page:pressok
    Last checked Thu, Jul 2, 04:28 PM
  • public_page:blogok
    Last checked Thu, Jul 2, 04:28 PM
  • public_page:jobsok
    Last checked Thu, Jul 2, 04:28 PM
  • public_page:careersok
    Last checked Thu, Jul 2, 04:28 PM
  • public_page:aboutok
    Last checked Thu, Jul 2, 04:28 PM
  • public_page:homeok
    Last checked Thu, Jul 2, 04:28 PM

Signal timeline

5 dated public signals · newest on the right

Funding
Press
Other
Dec 10, 2024Sep 30, 2025Jul 20, 2026
Funding (1)Press (2)Other (2)

Signal breakdown

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

Public source summary

Total evidence rows
5
Latest evidence
Sun, Jun 28, 09:08 PM

Source types found

funding_articleotherpress

Strongest / recent news-style rows

  • Sylvian | Y Combinator

    Wed, May 20, 06:28 PM · confidence 88%high quality

  • David Sylvian

    wikipedia · Sun, Jun 28, 09:08 PM · confidence 50%medium quality

  • Launch YC: Sylvian

    Wed, May 20, 06:28 PM · confidence 85%medium quality

Public signal timeline

Newest first · 5 event(s)

1
Wed, May 20, 06:28 PM · funding_article · 88% · verified_publichigh qualitySylvian | Y Combinator

YC F25; specialized AI agents gathering expert tool-use data for LLMs via competitions.

Source ↗
2
Sun, Jun 28, 09:08 PM · other · 50% · publicmedium qualityDavid Sylvian

Source: wikipedia

Source ↗
3
Wed, May 20, 06:28 PM · press · 85% · verified_publicmedium qualityLaunch YC: Sylvian

Data for LLMs through competition model.

Source ↗
4
Sun, Jun 28, 09:08 PM · other · 50% · publiclow qualitySylvain Wiltord

Source: wikipedia

Source ↗
5
Wed, May 20, 06:28 PM · press · 85% · verified_publiclow qualitySylvianAI on GitHub

GitHub org for Sylvian project artifacts.

Source ↗

News

3 row(s)

Third-party press coverage. Independent reporting corroborates company claims; repeated coverage across outlets is a momentum signal.

other·Sun, Jun 28, 09:08 PM·Confidence 50%medium qualitypublic
David Sylvian

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
press·Wed, May 20, 06:28 PM·Confidence 85%medium qualityverified_public
Launch YC: Sylvian

Data for LLMs through competition model.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
other·Sun, Jun 28, 09:08 PM·Confidence 50%low qualitypublic
Sylvain Wiltord

Why 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, 06:28 PM·Confidence 88%high qualityverified_public
Sylvian | Y Combinator

YC F25; specialized AI agents gathering expert tool-use data for LLMs via competitions.

Why it matters: Funding signal — Pre-Seed per this source; verify against the linked original before relying on it.

Open source ↗

GitHub

1 row(s)

Public engineering activity. Sustained commits, releases, and stars indicate real product development and, for dev tools, developer adoption.

press·Wed, May 20, 06:28 PM·Confidence 85%low qualityverified_public
SylvianAI on GitHub

GitHub org for Sylvian project artifacts.

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗

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