startup ideas · 2026
Trending startup ideas in 2026
1,173 companies from 2026 cohorts are in the MarkosWeb corpus so far - four Y Combinator batches plus Techstars and 500 Global intakes. Trend here means measured movement: which clusters gained share batch over batch, which words appeared in founders' one-liners for the first time, and how the product form shifted. The headline: 32% of 2026 companies ship an autonomous agent, against 11% in 2022, while copilots fell to 3%.
1,173
companies from 2026 cohorts
66%
AI-native in 2026
32%
build an agent
3%
build a copilot
Rising in 2026
Share of classified YC companies, last two batches against the two before. Positive means the cluster is taking a bigger slice of each new batch.
- Robotics and physical world+8.6 pp · 19.4% of F26
- AI infra and compute+5.0 pp · 11.1% of F26
- Developer tools+1.0 pp · 8.3% of F26
- Horizontal AI assistants+0.6 pp · 2.8% of F26
- Agent infrastructure-0.0 pp · 16.7% of F26
- Commerce and marketplaces-0.2 pp · 0.0% of F26
Cooling
Losing share is not the same as shrinking: vertical AI agents still lead every batch. It means the marginal founder is choosing something else.
- Vertical AI agents-6.9 pp · 25.0% of F26
- Defense and space-1.9 pp · 0.0% of F26
- Fintech-1.8 pp · 5.6% of F26
- Security and compliance-1.6 pp · 0.0% of F26
Agents replaced copilots
Product form by cohort year, across all programs: AI at the core of the product, and whether it does the job itself (agent), assists a person (copilot) or is something others build on (infra).
| Cohort year | Companies | AI-native | Agent | Copilot | Infra |
|---|---|---|---|---|---|
| 2022 | 1,534 | 27% | 11% | 3% | 9% |
| 2023 | 1,667 | 45% | 17% | 6% | 10% |
| 2024 | 2,430 | 49% | 18% | 7% | 11% |
| 2025 | 1,880 | 60% | 26% | 5% | 15% |
| 2026 | 1,106 | 66% | 32% | 3% | 20% |
Words being born
Two-word phrases from company one-liners that barely existed before the current wave and are now used by several companies. Vocabulary moves a year before cluster shares do.
- ainative insurance6 now · 0 before · first 2025
- prediction markets6 now · 2 before · first 2023
- claude code6 now · 1 before · first 2022
- cpa firms4 now · 0 before · first 2025
- accounting firm4 now · 0 before · first 2025
- knowledge work4 now · 0 before · first 2025
- product development4 now · 1 before · first 2024
- medical imaging4 now · 1 before · first 2022
- robotics data3 now · 0 before · first 2026
- multilingual voice3 now · 0 before · first 2025
- aipowered predictive3 now · 0 before · first 2025
- order entry3 now · 0 before · first 2025
- compliance copilot3 now · 0 before · first 2025
- ensuring compliance3 now · 0 before · first 2025
- food distributors3 now · 0 before · first 2025
- fortune 5003 now · 0 before · first 2025
- health assistant3 now · 0 before · first 2025
- heavy industries3 now · 0 before · first 2025
- development lifecycle3 now · 0 before · first 2025
- real life3 now · 0 before · first 2025
Method and the longer list: Trends.
2026 cohorts in the corpus
| Program | Batch | Companies |
|---|---|---|
| Y Combinator | S26 | 240 |
| Plug and Play | PnP 2026 | 200 |
| Y Combinator | W26 | 199 |
| Y Combinator | X26 | 196 |
| Techstars | TS 2026 | 108 |
| a16z speedrun | SR006 | 59 |
| Y Combinator | F26 | 38 |
| alchemist | Alchemist Class 41 | 26 |
| 500 Global | - | 20 |
| antler | Antler UK 2026 | 10 |
| spc | - | 10 |
| seedcamp | Seedcamp 2026 | 7 |
| 500 Global | 500G MENA 11 | 7 |
| 500 Global | 500G Eurasia 10 | 7 |
| SOSV | SOSV HAX Seed 2026 | 7 |
| antler | Antler Australia 2026 | 7 |
| antler | Antler 2026 | 6 |
| 500 Global | 500G Lucha - NONE | 6 |
| antler | Antler Canada 2026 | 5 |
| antler | Antler Singapore 2026 | 5 |
| ef | EF London 2026 | 5 |
| antler | Antler US 2026 | 5 |
The newest YC batch is still filling: Batch Live.
From a trend to an idea
- A rising cluster is a market with a tailwind and more competitors next batch. Check the crowded subniches on AI startup ideas before committing to the obvious one.
- A cooling cluster with a big graveyard is often the better entry: fewer new rivals, and the last wave's mistakes are documented on dead startup ideas.
- Demand side: Gaps compares YC's Requests for Startups with how many companies already build each theme.
More startup ideas by angle
- AI startup ideas →Where AI-native companies are actually being built
- Dead startup ideas worth reviving →Graveyards that founders are re-entering
- Stealth startups →How many accelerator startups are really in stealth
Validate any of them: Idea Check shows who already builds it; Idea Lab writes concepts from a cluster's data; Chat matches ideas to what you can build.