Y Combinator 🌉 San Francisco

Y Combinator is 💤 Quiet on Above the Fog’s AI hype radar: a hype score of 1 out of 100 on Sep 27, 2026, 2 points lower than 7 days before. Its attention is within the normal range across the monitored sources.

Y Combinator, the SF accelerator led by Garry Tan: batches (S26, F26...), Demo Days, and 'YC-backed' startups.

First seen on HN: front-page time (ClickHouse) · Sep 17 — the first monitored source to go above normal for it in the last 14 days.

Why this stage: within the normal range across monitored sources.

Stage

💤 Quiet — within the normal range across the monitored sources

Hype score

0.7 / 100 · 0 in 1 day · −1.5 in 7 days

In hype since

not in hype now

Peak, 30 days

17.7 on Sep 18, 2026

Category

🌉 San Francisco

Part of

SF AI scene

Official site

ycombinator.com

Sources above normal

0 of 26 scoring it (0 independent families)

Stories in 7 days

16

Share of voice

0.1% of the radar’s attention in 7 days

Where the attention comes from

“Normal” is the median of the source’s previous 14 normal days for this topic. A source is above normal when its value is at least 30% over that level and stands out from its usual day-to-day variation (z ≥ 2); the share is the part of the hype score that source explains. “× normal” is left blank when the normal level is 0.

Stories behind it

1. Show HN: Whiteboard (YC W26) – An open-source IDE for thoughtful software design — HN: front-page time (ClickHouse) (github.com) · Sep 24 · score 407 · 139 comments
2. Show HN: Whiteboard (YC W26) – An open-source IDE for thoughtful software design — Hacker News (github.com) · Sep 24 · score 333 · 120 comments
3. YC S26 has a sovereign Starlink, Crowdstrike for agents, and an AI defense contractor. Am I crazy or is this batch different? (i will not promote) — Reddit (r/startups) · Sep 23 · score 17 · 29 comments
4. Build Your AI Team | A hands-on workshop with Turnstone (YC W26) for your everyday work — Luma (SF AI events) (UpScaleX.AI Events) · score 13
5. dhruvmorphic-eng/YC-Data-: Every Y Combinator company on one interactive globe. Search, filter, explore. — GitHub (dhruvmorphic-eng) · Sep 24 · score 1
6. Show HN: Whiteboard (YC W26) – An open-source IDE for thoughtful software design — DEV Community (dev.to) (#ai) · Sep 25 · score 1 · 0 comments
7. a16z is challenging Silicon Valley’s love for drop-outs by launching a school — Tech press (RSS) (TechCrunch) · Sep 22
8. Bubble Lab (YC W26) X Lunatechs - Pretty Cool Demos and Pre-Tech Week Social! — Cerebral Valley (AI events) (San Francisco, California)
9. Launch HN: Vespper (YC F24) – SOTA Docx MCP https://www.vespper.com/blog/launching-vespper-docx-mcp Comments: https://news.ycombinator.com/item?id=49881505 #HackerNews #LaunchHN #Vespper #YCF24 #Docx… — Mastodon (fediverse) (mastodon.social) · Sep 28 · score 0 · 0 comments
10. Show HN: HN.watch – Videos of all Hacker News posts — Hacker News (hn.watch) · Sep 28 · score 117 · 69 comments
11. applying for W'27 — Reddit (r/ycombinator) · Sep 23 · score 5 · 12 comments
12. Show HN: Training a model to identify AI web content from structure alone — Hacker News (arxiv.org) · Sep 22 · score 73 · 26 comments

Themes

What its stories of the last 7 days are about: the 13 of them the Jev model kept as about the scene, by theme (a story can carry several themes):

• Agents — 23% of its stories
• Companies & business — 23% of its stories
• Other tech — 23% of its stories
• Protocols & infra — 23% of its stories
• Models — 7.7% of its stories
• Other AI — 7.7% of its stories

Related topics

Part of

SF AI scene

Key people

Garry Tan

Mentioned with

AI agents (19 stories), SF AI hackathons and events (3 stories), Sam Altman (3 stories)

Hype score, last 30 days

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