Fabius went through Y Combinator in the Winter 2023 batch and describes itself as: AI to improve Sales Calls. As of November 10, 2026, Y Combinator's directory lists it as Inactive (Y Combinator directory entry, December 14, 2022).
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Key facts
- · Batch: Winter 2023 · Fabius in the Y Combinator directory
- · Industry: B2B · Fabius in the Y Combinator directory
- · Team size: 2 · Fabius in the Y Combinator directory
- · Based: San Francisco, CA, USA · Fabius in the Y Combinator directory
- · Status: Inactive, as listed by Y Combinator · Fabius in the Y Combinator directory
Fabius went through Y Combinator in the Winter 2023 batch, describing itself as AI to improve Sales Calls. Y Combinator's company directory lists it as Inactive. The directory does not say why a company stopped, and this page does not guess.
- Batch
- Winter 2023
- What they did
- AI to improve Sales Calls
- Industry
- B2B
- Team size
- 2
- Based
- San Francisco, CA, USA
- Status
- Inactive, as listed by Y Combinator
Its batch
Winter 2023 had 278 companies in YC's listing: 203 Active, 36 Acquired, 0 Public and 39 Inactive, so Fabius is one of 39 companies from that batch listed as Inactive (14%). Across YC batches at least two years old, 23% of companies are listed Inactive.
Statuses are Y Combinator's own listing in its public company directory, read on the date shown. YC's directory can drop companies altogether, so the Inactive counts here are a floor, not a full count of companies that stopped. Acquired and Public are as YC lists them; neither says anything about the price or the outcome for founders.
The record: Fabius in the Y Combinator directory. Measured 2026-11-10 from Y Combinator's company directory.
YC Winter 2023All shut-down YC companiesYC outcomes
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Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
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What the Full Report on Fabius covers
The Short Answer
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Warning Bells
Sources
1 cited source found
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