Sylvian

Inactive · Specialized AI Agents.

Why it ranks

2signal of 100 · rising 1

A sum of public facts, not a judgement and not investment advice.

Companies closest to Sylvian
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KairosShared: reinforcement learning, specialized, agentYC X25ActiveAI, Devtools	AI, Devtools	Active	YCX25
Smallest.ainot in a program hereShared: specialized, agentElsewhereOther	Other	Elsewhere

Companies next to Sylvian
Company	Category	Status	Program
ThetaShared: reinforcement learning, specializedYC X25ActiveAI	AI	Active	YCX25
MatXShared: specializedAI Grant Batch 2Not statedAI	AI	Not stated	AI GrantBatch 2
FreesoloShared: reinforcement learning, specializedYC X25ActiveAI, Devtools	AI, Devtools	Active	YCX25
DeepModelShared: specialized, agentAntler 2024Not statedAI	AI	Not stated	Antler2024
Vibrant LabsShared: reinforcement learning, agentYC W24ActiveAI, Devtools	AI, Devtools	Active	YCW24

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Cortex AILarge-scale real-world robot & human data for embodied AIteam of 3ActiveAI	AI	Active
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Specific LabsReal World Environments and Data for AIteam of 7ActiveAI	AI	Active
AbsurdThe production canvas for AI film teamsteam of 10ActiveAI	AI	Active
AirCaps AIVoice AI that hears what other models miss.team of 5hiringActiveAI, Devtools	AI, Devtools	Active
AlderAI employees for finance, starting with accounts receivable.team of 2hiringActiveAI	AI	Active

Sylvian helps companies build specialized AI agents.

Which YC batch was Sylvian in?

Sylvian was in Y Combinator's Fall 2025 batch (F25).

Is Sylvian still active?

Y Combinator lists Sylvian as inactive.

Who founded Sylvian?

Sylvian's founders, as listed on its YC page: William Huang (Founder), Niall Kehoe (Founder).

Where is Sylvian based?

Sylvian lists San Francisco, CA, USA as its location on YC's directory.