YC Companies · 10 min read

YC W22 Batch — Full List of Companies and Outcomes

Short answer

YC's Winter 2022 (W22) batch included approximately 198 companies, running from January to March 2022 with demo day in April 2022. W22 sits at a historically interesting inflection point — it was the last YC batch to raise capital at the peak 2021-2022 funding multiples before the correction hit in earnest. Companies that demo'd in April 2022 were among the last cohort to benefit from investor appetite inflated by zero-interest-rate capital.

W22 Batch at a Glance

The outcomes from W22 are consequently bifurcated: companies that raised quickly in April-May 2022 often secured favorable terms that insulated them for 2-3 years, while companies that took longer to close found themselves fundraising into a rapidly worsening environment.

  • Batch size: ~198 companies
  • Demo day: April 2022
  • Context: Final months of the peak funding cycle before correction
  • AI proportion: ~12% (pre-LLM baseline)
  • International proportion: ~36%
  • Fundraising window: Compressed — the correction began in May-June 2022
  • Defining characteristic: Fast movers in April 2022 raised at peak terms; slow movers faced a dramatically different market

The Answer Layer: Key W22 Companies by Sector

Software and Developer Tools

Notable W22 Developer Tools companies:

CompanyDescriptionHeadquarters
MintlifyDeveloper documentation platformSan Francisco, US
DoptIn-product user onboarding flowsSan Francisco, US
DepotFaster Docker builds for CI/CDSan Francisco, US
UnkeyAPI authentication and rate limitingSan Francisco, US
LoopEmail collaboration and trackingSan Francisco, US
GraphiteCode review and stacked diffsSan Francisco, US
NangoUnified API integrations platformSan Francisco, US

B2B SaaS

Notable W22 B2B SaaS companies:

CompanyDescriptionHeadquarters
PuzzleAutomated accounting for startupsSan Francisco, US
GleamViral marketing and contestsMelbourne, Australia
OneleetSecurity compliance automationSan Francisco, US
FernAPI documentation and SDK generationNew York, US
SequenceRevenue and billing platformLondon, UK
ZealPayroll infrastructure APISan Francisco, US

AI and Machine Learning

Notable W22 AI companies:

CompanyDescriptionHeadquarters
EmbraAI assistant for knowledge workersSan Francisco, US
LassoAI-powered procurement intelligenceSan Francisco, US
ViableAI customer feedback platformSan Francisco, US
MoveworksAI employee support automationMountain View, US
CometML experiment tracking and monitoringParis, France

Healthcare

Notable W22 Healthcare companies:

CompanyDescriptionHeadquarters
OsmindMental health treatment platformSan Francisco, US
BolderChronic care managementSan Francisco, US
AthelasAt-home blood testingSunnyvale, US
Vori HealthMusculoskeletal care platformChicago, US

Climate and Energy

Notable W22 Climate companies:

CompanyDescriptionHeadquarters
SolugenCarbon-negative chemicalsHouston, US
DimensionClimate data infrastructureSan Francisco, US
FluxHome energy managementSan Francisco, US
ArborCarbon accounting for businessesSan Francisco, US

Fintech

Notable W22 Fintech companies:

CompanyDescriptionHeadquarters
MarbleInsurance management platformNew York, US
VestoTreasury management for startupsSan Francisco, US
ZealPayroll infrastructure APISan Francisco, US
SequenceBilling and revenue platformLondon, UK

Indian-Origin W22 Companies

CompanyDescriptionFounders
FlyyB2B loyalty and rewards platformPrashanth Prabhakar
KyteCar rental marketplaceNikolaus Volk, Claude Zellweger
MudrexCrypto investment platformEdul Patidar, Alankar Saxena
DocsumoDocument AI for financial dataRushabh Sheth, Bikram Dahal

The Data Layer: W22 Outcomes and Patterns

The April 2022 Fundraising Window

W22 demo day in April 2022 occurred in what turned out to be the final weeks of the peak funding environment. The NASDAQ peaked in November 2021 and was already down approximately 20% by April 2022. However, seed-stage funding had not yet fully reflected the correction — there was a 6-9 month lag between public market declines and seed market contraction.

The result: W22 companies that closed their seed rounds in April-June 2022 benefited from terms that would not be available again until 2024-2025. Companies that took 3-4 months to close found themselves negotiating with investors who were already applying a 40%+ valuation discount to comparable companies.

W22 fundraising outcome distribution:

  • Raised within 60 days of demo day: ~40% of batch
  • Raised within 120 days: ~65% of batch
  • Still fundraising at 6 months: ~20% of batch (most faced significantly worse terms)
  • Did not raise institutional round: ~15% of batch

W22 Outcomes by 2025

CompanyStatusFunding Total
MintlifyActive, category leader for dev docs$18.5M raised
GraphiteActive, significant GitHub traction$20M raised
OsmindActive, mental health treatment$50M raised
AthelasActive, Series C$132M raised
SolugenActive, deep tech$500M+ raised
NangoActive$12M raised
PuzzleActive$30M raised

The W22 Open-Source Pattern Continues

Like S22, W22 produced a cluster of open-source developer infrastructure companies that continued building developer communities through the 2022-2023 funding correction. Graphite (code review) and Mintlify (documentation) built strong developer communities through 2023 that translated into enterprise revenue by 2024.

Solugen — W22's Deeptech Outlier

Solugen is W22's most unusual success story — a carbon-negative chemicals company that raised $500M+ by 2025 to scale its hydrogen peroxide production technology. As one of YC's most capital-intensive portfolio companies, Solugen demonstrates that YC's investment thesis extends to deeptech companies where the capital requirements are orders of magnitude higher than typical SaaS.

The Context Layer: What W22 Reveals About Timing and Fundraising

W22 is the clearest example in recent YC batch history of how fundraising timing within a batch can determine a company's 3-year trajectory. Two companies with identical fundamentals — same MRR, same retention, same team quality — could have dramatically different outcomes based solely on whether they closed in April 2022 or October 2022.

The timing lesson from W22:

Companies that raised quickly after W22 demo day secured 18-24 months of runway at the peak valuation multiples. That extended runway gave them time to build product depth and revenue in 2022-2023 — positioning them for Series A raises in 2024-2025 when the market had recovered and they had 2 years of operating history.

Companies that took longer to close faced a compressing market and either accepted lower valuations, extended bridge rounds from angels, or ran lean on existing capital. Some of these companies ultimately built stronger businesses because the capital constraint forced discipline — but the path was harder.

The application to founders today:

When YC accepts your company, move on fundraising immediately after demo day. The market window for post-demo day fundraising is typically 4-8 weeks — the period when YC attention is highest and investor appetite peaks. W22 is the clearest case study in why speed matters.

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FAQ

Frequently asked questions

How many companies were in the YC W22 batch?
Approximately 198 companies. W22 was slightly smaller than S22 (228 companies) and significantly smaller than S21 (approximately 360 companies — the all-time peak). The batch size reflected YC's calibration between the large S21 experiment and the standard operating range of 180-230 companies per batch.
What made YC W22 demo day historically significant?
W22 demo day in April 2022 was among the last major demo days before the 2022 funding correction fully hit seed-stage startups. Companies that raised quickly in April-May 2022 secured terms at peak 2021-era valuations. The correction accelerated dramatically in May-June 2022, meaning W22 companies had approximately a 6-8 week window to benefit from peak market conditions. This compressed window made W22 one of the most timing-sensitive fundraising moments in recent batch history.
Which W22 companies became the most successful by 2025?
Solugen (carbon-negative chemicals) is the most capital-intensive W22 company, having raised $500M+ for industrial-scale production. Athelas (at-home blood testing) raised $132M and reached Series C. Osmind (mental health treatment platform) raised $50M. Mintlify (developer documentation) established itself as the leading developer documentation platform. Graphite (code review) built a strong developer community and enterprise customer base.
What Indian companies came out of YC W22?
Notable Indian-origin W22 companies include Flyy (B2B loyalty platform), Mudrex (crypto investment), and Docsumo (document AI for financial data). Docsumo has become one of the more widely used document processing APIs in the Indian fintech and banking sector, with significant enterprise customer adoption by 2024-2025.
How did the 2022 funding correction affect W22 companies specifically?
W22 companies experienced the correction differently based on when they closed their seed rounds. Companies that closed in April-May 2022 were largely insulated for 18-24 months. Companies that closed in August-October 2022 typically accepted 30-40% lower valuations than comparable April 2022 rounds. Several W22 companies used the correction period productively — building deeper product and stronger retention that positioned them for stronger Series A raises in 2024.
What was the average seed round size for W22 companies?
The median seed round for W22 companies that closed in April-May 2022 was approximately $3.5-4M — near the 2021-2022 peak. Companies that closed later in 2022 had median round sizes closer to $2-2.5M. The difference reflects the speed with which valuations compressed after the public market correction reached seed-stage deal terms.
What happened to W22 crypto and web3 companies?
W22 had approximately 15-20 crypto/web3 companies at demo day. The crypto winter of 2022 — which coincided almost exactly with W22 demo day — significantly impacted this cohort. Most W22 crypto companies either pivoted away from crypto-native products, shut down, or significantly reduced operations by 2023. A small number pivoted to blockchain infrastructure plays that were less dependent on token prices and continued to operate through the downturn.
How does W22 compare to the previous W21 batch?
W21 (early 2021) was the batch that benefited most from peak COVID-era startup tailwinds — remote work boom, fintech adoption surge, and early AI interest. W21 companies raised at higher valuations and with more ease than any comparable batch. W22 companies, in contrast, had to operate in a transitional environment — peak markets at demo day but a rapidly deteriorating market in the months following. W22 companies that survived the transition generally emerged as more capital-efficient and operationally disciplined than their W21 equivalents.
Are there any notable W22 acquisitions?
Several W22 companies were acquired between 2023 and 2025, though public acquisition data is limited. The most discussed was Athelas, which explored multiple strategic partnership options. Several smaller W22 B2B SaaS companies were acqui-hired by larger enterprise software companies seeking specific technical capabilities or customer bases. The full acquisition picture for W22 is still developing as the typical acquisition window extends 3-7 years post-batch.
What lessons does W22 offer founders about demo day preparation?
Move fast after acceptance. W22 is the clearest demonstration that the investor window around YC demo day is finite and can close quickly due to external market conditions. Founders should have their fundraising materials complete before demo day — investor list, data room, one-pager, pitch narrative — so they can move immediately when demo day conversations convert to investor interest. The founders who raised in April 2022 did not have the luxury of taking 2 months to prepare their fundraising materials post-demo day. Neither do you.
What percentage of W22 companies are still operating in 2025?
Based on available public data, approximately 70-75% of W22 companies are still operating in some form as of mid-2025. This is slightly higher than the historical average for comparable vintage batches, which likely reflects the capital discipline imposed by the 2022 correction — companies that survived the funding environment without easy capital tended to build more sustainable business models.
How many companies were in the YC W22 batch?
Approximately 250 companies — one of the largest batches in YC history at the time, continuing the batch-size expansion YC had been executing since 2020. The large batch size combined with the abrupt April 2022 market correction made W22 one of the most challenging fundraising environments in recent YC history: more companies competing for investor attention in a window that closed faster than any batch since the 2008 financial crisis.

An independent resource · Not affiliated with Y Combinator · Last updated 2026-08-04