AI Mentions, Links & Domains Report for Y Combinator
This page provides details about airbnb.com (source) which was ranked #10 out of 141 link domains (10 citations (2% share)) in answers from AI models (Perplexity Sonar Pro Search,
Anthropic Claude Sonnet Latest,
OpenAI ChatGPT Latest,
Google Gemini Flash (latest),
xAI Grok Latest) when they were asked the following 2 questions: "What is Y Combinator known for today, and which organizations, products, people, publications, communities, or websites are most closely associated with it? Include direct source links for every notable entity when available.", "What alternatives, competitors, partners, adjacent products, customers, use cases, or ecosystem players are commonly mentioned alongside Y Combinator? Explain the relationship of each one and cite official or high-quality sources." on May 12, 2026 by AICW AI Mentions. This source is referenced for brands: Y Combinator, Airbnb, Stripe, OpenAI.
| Model | Voice | Position | Citations |
|---|---|---|---|
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3.6% | 18 | 2 |
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2.2% | 22 | 2 |
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1.7% | 7 | 2 |
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1.1% | 21 | 2 |
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0.8% | 15 | 2 |
| URL Path | Citations | Position |
|---|---|---|
| airbnb.com | 10 | 20.9 |
| Brand | Voice | Mentions |
|---|---|---|
| Y Combinator | 100% | 164 |
| Stripe | 5.4% | 30 |
| Airbnb | 4.3% | 22 |
| OpenAI | 2.2% | 16 |
What is Y Combinator known for today, and which organizations, products, people, publications, communities, or websites are most closely associated with it? Include direct source links for every notable entity when available.
[...] pens at YC | Y Combinator](https://www.ycombinator.com/about). ## Most Notable Portfolio Companies Y Combinator is best known for backing transformative companies that became industry leaders: | Company | Valuation/Outcome | YC Batch | Focus | |---------|-------------------|----------|-------| | [Airbnb](https://www.airbnb.com) | $100B+ (public) | W09 | Hospitality/Travel | | [OpenAI](https://openai.com) | $500B+ (private) | S05 | Artificial Intelligence | | [Stripe](https://stripe.com) | $107B (private) | W07, S09 | Payments Infrastructure | | [Coinbase](https://www.coinbase.com) | $86B (public) | S12 | Cryptocurrency | [...]
What alternatives, competitors, partners, adjacent products, customers, use cases, or ecosystem players are commonly mentioned alongside Y Combinator? Explain the relationship of each one and cite official or high-quality sources.
[...] ion. - **Airbnb (W09)**: Received YC funding and advice, leading to a $100B+ IPO. [Y Combinator](https://www.ycombinator.com)[whats the anti-YC, or an incubator thats similar the early-stage ...](https://www.reddit.com/r/ycombinator/comments/18jj3c3/whats_the_antiyc_or_an_incubator_thats_similar/) ([Airbnb](https://airbnb.com)) - **Stripe (S09)**: Pivoted during YC to become a $107B payments leader. [Y Combinator](https://www.ycombinator.com) ([Stripe](https://stripe.com)) - **DoorDash (S13)**: Scaled delivery service to $39B IPO valuation via YC mentorship. [Y Combinator](https://www.ycombinator.com)[whats the anti-YC, [...]
What is Y Combinator known for today, and which organizations, products, people, publications, communities, or websites are most closely associated with it? Include direct source links for every notable entity when available.
[...] has funded **4,000+ companies** across many countries - **High success rate**: Its portfolio companies have a combined valuation in the **hundreds of billions of dollars** --- ## Most Notable Alumni Companies These are among the most famous YC-backed companies: | Company | Domain | |---|---| | [Airbnb](https://www.airbnb.com/) | Hospitality / Travel | | [Stripe](https://stripe.com/) | Payments | | [Reddit](https://www.reddit.com/) | Social Media | | [Dropbox](https://www.dropbox.com/) | Cloud Storage | | [DoorDash](https://www.doordash.com/) | Food Delivery | | [Coinbase](https://www.coinbase.com/) | Crypto Exchange | | [...]
What alternatives, competitors, partners, adjacent products, customers, use cases, or ecosystem players are commonly mentioned alongside Y Combinator? Explain the relationship of each one and cite official or high-quality sources.
[...] ferred law firm in YC's recommended resources - Specializes in startup/VC law and deeply embedded in Silicon Valley ecosystem --- ## 🏢 Notable YC Alumni (Ecosystem Shapers) These companies are so large they've become ecosystem players themselves: | Company | Batch | Relevance | |---|---|---| | [Airbnb](https://www.airbnb.com/) | W09 | Most-cited YC success story | | [Stripe](https://stripe.com/) | W10 | Payments infrastructure for startups | | [Dropbox](https://www.dropbox.com/) | S07 | Early validation of YC model | | [Reddit](https://www.reddit.com/) | S05 | Acquired by YC then spun out | | [DoorDash](https://www.door [...]
What is Y Combinator known for today, and which organizations, products, people, publications, communities, or websites are most closely associated with it? Include direct source links for every notable entity when available.
[...] up School: https://www.startupschool.org/ - YC Library: https://www.ycombinator.com/library - YouTube channel: https://www.youtube.com/ycombinator Organizations and companies most closely associated with Y Combinator These companies are among the most famous YC-backed startups: - [Airbnb](https://www.airbnb.com/) - YC Winter 2009 - YC company page: https://www.ycombinator.com/companies/airbnb - [Stripe](https://stripe.com/) - YC Summer 2010 - YC company page: https://www.ycombinator.com/companies/stripe - [DoorDash](https://www.doordash.com/) - YC Summer 2013 - YC company page: ht [...]
What alternatives, competitors, partners, adjacent products, customers, use cases, or ecosystem players are commonly mentioned alongside Y Combinator? Explain the relationship of each one and cite official or high-quality sources.
[...] frequently connected to YC startups. - Official: https://foundersfund.com/ 3. YC Portfolio Companies (Often Mentioned Alongside YC) These companies are YC’s most famous alumni and are central to YC’s reputation. - Airbnb - Relationship: Iconic YC success story (YC Winter 2009). - Official: https://www.airbnb.com/ - YC profile: https://www.ycombinator.com/companies/airbnb - Stripe - Relationship: One of YC’s most valuable alumni. - Official: https://stripe.com/ - YC profile: https://www.ycombinator.com/companies/stripe - DoorDash - Relationship: Major YC consumer marketplace success. - Official [...]
What is Y Combinator known for today, and which organizations, products, people, publications, communities, or websites are most closely associated with it? Include direct source links for every notable entity when available.
[...] og.samaltman.com](https://blog.samaltman.com/) * **Michael Seibel:** A long-time Managing Director at YC and co-founder of Justin.tv (Twitch). [mbrandons.com](https://www.mbrandons.com/) ### Most Successful Portfolio Companies (Alumni) * **Airbnb:** A global platform for stays and experiences. [airbnb.com](https://www.airbnb.com/) * **Stripe:** A suite of APIs powering online payment processing. [stripe.com](https://www.stripe.com/) * **Dropbox:** A cloud storage and file synchronization service. [dropbox.com](https://www.dropbox.com/) * **Coinbase:** A leading cryptocurrency exchange. [coinbase.com](https://www.coinb [...]
What alternatives, competitors, partners, adjacent products, customers, use cases, or ecosystem players are commonly mentioned alongside Y Combinator? Explain the relationship of each one and cite official or high-quality sources.
[...] at a Startup](https://www.workatastartup.com/) ### 4. Iconic "Customers" (Top Alumni) While YC calls them "portfolio companies," they are the primary "users" of the YC program. Their success defines YC’s brand. * **Airbnb**: One of YC's earliest and most valuable successes (W09 batch). * [Airbnb](https://www.airbnb.com/) * **Stripe**: Often cited as the "gold standard" of YC companies (S10 batch). * [Stripe](https://stripe.com/) * **Dropbox**: A quintessential YC success story (S07 batch). * [Dropbox](https://www.dropbox.com/) * **Coinbase**: The most prominent YC alum in the crypto space (S12 ba [...]
What is Y Combinator known for today, and which organizations, products, people, publications, communities, or websites are most closely associated with it? Include direct source links for every notable entity when available.
[...] e People - Paul Graham (co-founder, continues to publish influential essays on startups): [paulgraham.com](https://paulgraham.com/) - Sam Altman (former YC president; now leads OpenAI): [openai.com](https://openai.com/) ### Prominent YC-Funded Companies (Examples) - [Stripe](https://stripe.com/) - [Airbnb](https://www.airbnb.com/) - [Dropbox](https://www.dropbox.com/) - [Reddit](https://www.reddit.com/) These entities are repeatedly referenced on YC's own site, blog, Hacker News, and Paul Graham's essays. [...]
What alternatives, competitors, partners, adjacent products, customers, use cases, or ecosystem players are commonly mentioned alongside Y Combinator? Explain the relationship of each one and cite official or high-quality sources.
[...] r-friendly” institutions. [Andreessen Horowitz](https://a16z.com/) ### Iconic Alumni Companies (Customers / Use Cases of the YC Program) - **Airbnb** Classic YC success story (W09 batch) cited in virtually every YC overview and case study to illustrate the accelerator’s return profile. [Airbnb](https://www.airbnb.com/) - **Stripe** Another flagship YC company (S09/S10); repeatedly referenced when discussing how YC helps infrastructure and fintech startups scale. [Stripe](https://stripe.com/) - **Reddit** and **Dropbox** Early YC companies still used as canonical examples of the program’s track reco [...]