Pre-seed AI investors

If you're raising a pre-seed round for an AI startup, I'd prioritize investor databases that let you filter by investment stage, AI subsector, check size, geography, and previous investments.

There are several good platforms, including free databases specifically designed for founders.

1. Best platforms for finding AI-focused pre-seed investors

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1. Signal by NFX

(Best for AI investor discovery)

• Free investor database.
• Search by AI, pre-seed, seed, and other sectors.
• Find individual VC partners and their investment interests.
• Useful for identifying investors with a specific AI thesis.

Website:Signal by NFX

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2. OpenVC

(Best free starting point)

• Investor search by stage, industry, geography, and check size.
• Profiles include investment preferences and contact methods.
• Includes fundraising CRM features.
• Particularly useful for building an initial pre-seed investor pipeline.

Website:OpenVC

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3. Crunchbase

• Search investors who previously funded AI startups.
• Research funding rounds and portfolio companies.
• Identify investors backing companies similar to yours.
• Useful for checking whether a VC is actively investing in AI.

Website:Crunchbase

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4. PitchBook

• Detailed VC fund and partner information.
• Historical investment data.
• AI company funding and deal analysis.
• Useful for deeper research into institutional investors.

Website:PitchBook

Typically expensive; better suited to teams with research budgets.

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5. AngelList

• Access to angel investors and syndicates.
• Useful for finding individual investors interested in emerging technology.
• Relevant for smaller pre-seed checks and angel participation.

Website:AngelList

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6. Foundersuite

• Investor database and fundraising CRM.
• Track investor outreach and follow-ups.
• Organize your fundraising pipeline.
• Useful when contacting dozens or hundreds of investors.

Website:Foundersuite

These platforms have different strengths: Signal and OpenVC are particularly good starting points, while Crunchbase and PitchBook are stronger for researching investment histories.waveup.com+2

2. Additional platforms worth exploring

waveup.comwww.crustdata.comwww.metal.soseedforge.com

3. How to filter specifically for AI pre-seed investors

One important distinction: finding investors who say they invest in AI isn't the same as finding investors who actually write pre-seed checks into AI companies.

I'd use the following search criteria:

AI subsectors to search separately:

• Generative AI and foundation models
• AI agents and autonomous workflows
• Vertical AI / industry-specific AI
• AI infrastructure and developer tools
• Enterprise AI and automation
• Applied AI and machine learning
• Robotics and embodied AI

4. My recommended approach

If I were building an investor list for an AI pre-seed startup, I'd use this combination:

Suggested investor research stack

Signal by NFX (Start here)

Find AI-focused investors and individual partners.

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OpenVC

Build a shortlist using stage, sector, and check-size filters.

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Crunchbase

Verify which investors have backed comparable AI startups.

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Foundersuite

Track outreach, meetings, responses, and follow-ups.

A useful target is to build a list of 50–100 qualified investors rather than sending generic pitches to hundreds of VCs.

5. I can help you build a targeted AI investor list

The most important question is:

What type of AI startup are you raising for?

1. AI startup category

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2. Current startup stage

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3. Preferred investor geography

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4. Target investment amount

[Find matching AI investors]

I can use these details to research actual VC firms, angel investors, relevant partners, investment histories, and potential contact routes—not just give you another list of databases.

Identifying pre-seed angel investors and venture capitalists focused specifically on Artificial Intelligence requires utilizing platforms that offer granular filtering by stage, sector (AI/ML) , and check size.

The most effective platforms for this search are categorized below by how they facilitate early-stage AI fundraising:

1. Specialized Investor Databases & Search Engines

• OpenVC : A free, open-source database that lets you filter explicitly for pre-seed and seed funds that actively invest in AI. VCs on OpenVC state their exact check sizes, thesis requirements, and whether they prefer cold outreach, making it highly efficient for targeting AI-focused micro-VCs. Explore it directly at OpenVC.linkedin.com
• The Signal by NFX : Known for its robust signal-matching algorithm, this platform allows founders to search through thousands of verified early-stage investors, filter by AI expertise and pre-seed focus, and see warm introduction paths. Check it out on The Signal by NFX.linkedin.com
• Crunchbase : The gold standard for comprehensive market data. Use the advanced search filters to target investors who have tagged "Artificial Intelligence" and "Pre-Seed / Seed" as their primary investment criteria, then review their recent portfolio additions to verify actual AI deployment cadence. Search via Crunchbase.linkedin.com

2. Angel Marketplaces & Syndicates

• AngelList : Essential for pulling together smaller checks, syndicates, and rolling vehicles at the pre-seed stage. While it has evolved heavily into fund operations infrastructure, you can still research active syndicates and individual tech/AI angels deploying capital into early-stage deals. Learn more on AngelList.redbud.vc+1
• Gust : One of the oldest global platforms connecting early-stage entrepreneurs directly with organized angel investor networks and groups. It is widely used by regional angel groups, many of which have dedicated technology and software investment committees. Access it at Gust.linkedin.com

3. Accelerator Networks & Demo Days

• Y Combinator (YC) : Though an accelerator rather than a standalone database, YC’s specialized AI batches put founders in direct alignment with the densest concentration of pre-seed/seed AI angel investors and scout funds in the world via Demo Day. Explore programs at Y Combinator.
• Techstars : Operates prominent mentorship-driven, pre-seed accelerator programs globally, including localized or thematic cohorts centered around AI and emerging tech, providing immediate access to an aligned angel network. Learn more at Techstars.

To help narrow down which of these platforms will yield the fastest results, could you share:

• What geographic region or market are you targeting?
• Is your AI startup building infrastructure/models or an application layer?

For an AI startup raising a pre-seed round, I’d start with OpenVC and Signal by NFX, then use Crunchbase to research investors who have already backed similar AI companies. These tools complement each other: one helps you find investors by investment criteria, another helps uncover warm introductions, and the third helps validate their investment history.docs.openvc.app+2

Best platforms to find pre-seed AI investors

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1. OpenVC

(Best overall starting point)

Website:openvc.app

Search investors by stage, industry, geography, and check size. It is particularly useful for building a targeted list of funds, solo angels, and micro-VCs that consider early-stage technology companies. It also offers investor profiles and fundraising tools.docs.openvc.app+1

Best for: Founders who need a practical, affordable way to build their first AI investor pipeline.

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2. Signal by NFX

Website:signal.nfx.com

A free investor discovery network with lists organized by sector and stage, plus tools for finding mutual connections and potential introduction paths.signal.nfx.com+1

Best for: Finding investors who are a strong fit and getting a warm introduction rather than relying entirely on cold emails.

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3. Crunchbase

Website:crunchbase.com

Work backward from startups similar to yours. Look at who invested in their earliest rounds, which investors participate in AI deals, and whether those investors have continued deploying capital. Some advanced research features require a subscription.docs.openvc.app+5

Best for: Validating whether an investor actually invests in your AI category and at your stage.

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4. Gust

Website:gust.com

Connects founders with angel groups, early-stage investors, and accelerators. This is especially relevant if you want to explore organized angel networks instead of approaching individual VCs alone.docs.openvc.app+5

Best for: First-time founders, angel-group applications, and pre-seed rounds supported by multiple smaller checks.

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5. PitchBook

Website:pitchbook.com

Offers deeper research into venture funds, deals, investment activity, and fund profiles. It is useful for more rigorous investor research, though its cost can be difficult to justify for a bootstrapped founder.origami.chat

Best for: Founders or teams with a research budget who need detailed market and investor intelligence.

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6. AngelList

Website:angellist.com

Particularly useful for angel syndicates and investment structures that pool multiple investors. It is more valuable for organizing and closing a round than as your primary investor-discovery database.seedforge.com+1

Best for: Founders assembling a syndicate or coordinating many angel checks.

How to find investors specifically for AI at pre-seed

The biggest mistake is searching for investors who merely say they invest in AI. You want investors whose stage, check size, and technical thesis match your startup.

Use this workflow:

Step 1 — Build your initial list

Start with OpenVC and Signal. Search terms such as AI infrastructure, AI agents, generative AI, machine learning, and your specific vertical, such as healthcare AI or legal AI.

Step 2 — Qualify each investor

Prioritize pre-seed and seed investments, first-check investors, and firms whose typical check size fits your target raise. Confirm that they invest in companies at your current stage, not just established AI startups.

Step 3 — Find the right partner or angel

Look for the individual partner who leads AI investments. Check their portfolio, recent deals, technical background, and mutual connections.

Step 4 — Prioritize warm introductions

Use Signal, your founder network, accelerator alumni, and portfolio-company founders. Personalize cold outreach when a warm introduction is not available.

My recommendation

Let’s narrow it down to the right investors

I can help you identify a more targeted list of actual angel investors and VC firms, rather than just platforms. Two details would make the list substantially more useful:

1. What kind of AI startup are you building?

AI applications or AI agents

AI infrastructure or developer tools

Vertical AI (healthcare, legal, finance, etc.)

Foundation models or AI research / deep tech

Other AI category

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2. Where are you looking for investors?

US-based or investing in the US

Global, including US

Europe and UK

Asia

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Optional: Target raise

Under $500K

$500K–$1.5M

$1.5M–$3M

$3M+

Optional: Current stage

Idea / pre-product

MVP / early product

Users or early revenue

[Find matching investors]