Most startup accelerators are built on a hidden assumption: you already know what you are building. Y Combinator wants traction. Techstars wants a team and a product. 500 Global wants to see early distribution.
That excludes a large and often high-quality pool of founders: technologists, operators, researchers, and repeat founders who have the conviction to build a company but have not yet settled on what to build. These founders spend months circling ideas alone, quit jobs prematurely, or drift back into employment because there is no obvious support system for the "pre-idea" phase.
A specific category of programs sits in that gap. They fund the founder, not the company. They handle co-founder matching, idea development, and the "-1 to 0" work that no traditional accelerator will touch. Some are worth the equity. Some are not.
What Is a Pre-Idea Startup Program
A pre-idea startup program invests in the founder before there is a company, product, or fully formed idea. It sits earlier than accelerators like Y Combinator or Techstars, which expect applicants to arrive with a team and a working direction.
Three characteristics define the category:
- Applications accept individuals, not companies: you can apply as a solo person with a domain interest and no cofounder
- Programs invest time in ideation and team formation: the first weeks are structured around finding the right co-founder and validating what to build
- Capital comes after conviction, not before: most programs invest at the end of a residency phase once teams and directions have formed
The category has grown meaningfully since 2020:
- South Park Commons entered with a $1M Founder Fellowship
- Antler raised $510M in January 2026, with half earmarked for US founders
- Entrepreneur First raised $200M in March 2026 from Reid Hoffman, Eric Schmidt, and the Collison brothers
- Neo added a $750K uncapped SAFE model
The programs below are the ones that have consistently produced venture-scale outcomes.
Comparison Table: Pre-Idea Programs at a Glance
| Program | Capital | Equity | Duration | Location | Best fit |
|---|---|---|---|---|---|
| SPC Founder Fellowship | $400K + $600K guaranteed | 7% | Open-ended | SF, NYC, Bangalore | Highest pre-idea capital, frontier tech |
| Antler | $100K-$1M+ (region-dependent) | 8-12% | 6 months | 27+ cities globally | Co-founder matching, global scale |
| Entrepreneur First | £80K-£120K | 8-10% | 6 months | London, Paris, Berlin, Bangalore, Singapore | Deep tech, Europe and Asia only |
| Neo Accelerator | $750K uncapped SAFE + $450K credits | 0.75-5% variable | 3 months | San Francisco | AI-native, technical, minimal dilution |
| HF0 Residency | Up to $1M uncapped SAFE | 5% | 12 weeks | San Francisco | Repeat founders, senior technical |
| Founder Institute | Program only | 2.5% warrant | 14-16 weeks | 200+ cities | Part-time compatible, global reach |
| ODF Fellowship | None (pay-what-you-can) | 0% | 1 week + year-long community | San Francisco | Community-first, no equity |
| Solo Founders Program | $100K | 2.5% | Small cohorts | Various | Solo founders only |
| Antler Disrupt | Sprint terms vary | Varies | Sprint format | Various | Emerging tech founders |
| Creative Destruction Lab | Grants; no equity | 0% | 9 months | 16+ university sites | Frontier science, deep tech |
The 10 Best Startup Programs for Founders Without an Idea
Ordered roughly by fit for the pre-idea stage, not by prestige.
1. South Park Commons Founder Fellowship
Deal: $400K upfront for 7% (SAFE), plus $600K guaranteed in your next external funding round. Up to $1M+ in credits from Anthropic, OpenAI, Azure, GCP, AWS.
Program: In-person cohorts in San Francisco, New York, and Bangalore. Spring and Fall cohorts. Fall 2026 kicks off in late September; applications open summer 2026. Two-month bootcamp followed by an open-ended residency period without demo day pressure.
Best for: Highly technical solo founders or early teams who want the maximum pre-idea capital available and a strong community before committing to a specific product.
SPC calls the pre-idea phase "-1 to 0" and has built the most explicit program in the category around it. The Fellowship is designed for people who are still figuring out their idea but have the drive to build something venture-scale. Notable alumni include Render ($150M+ raised), Luma Labs, Baseten, Comun, Unit21, Profound, Goodfire, and Replit. SPC has invested in 250+ companies as of 2026.
The economic package is genuinely unusual. The $400K for 7% is competitive with YC on capital while accepting founders who are meaningfully earlier stage. The $600K guaranteed in the next round is not follow-on capital contingent on performance; it is committed, which gives founders visibility into their runway before they even start the fellowship.
2. Antler
Deal (varies significantly by region):
| Region | Investment | Equity |
|---|---|---|
| US | $500K-$1M initial + ~$650K in credits | ~9% |
| UK (new terms) | £500K package (£125K cash + £85K convertible + £190K matched follow-on) | 8.5% base |
| Europe (typical) | €100K-€200K | 8-12% |
| Africa | $100K | 10% |
Program: 6 months in two phases. Phase 1 (10 weeks) focuses on co-founder matching and idea validation. Phase 2 (3-4 months) is the traditional build phase after Antler invests in the strongest teams. 27+ cities globally including San Francisco, New York, London, Berlin, Singapore, Nairobi, Sydney.
Best for: Talented individuals who need co-founder matching and are open to relocating for 6 months. Antler is the most globally distributed pre-idea program in the world.
Antler's model is genuinely different from every other program on this list. Applicants arrive individually, meet dozens of potential co-founders during structured events, run experiments together, and pitch ideas as forming teams. Teams that coalesce and show promise receive investment at the end of Phase 1. Teams that do not form leave with an expanded professional network but no funding.
The scale is meaningful. Antler has backed 1,800+ startups including 400 in the past year alone. Two portfolio companies (Airalo and Lovable) reached unicorn status in 2025. The firm closed $510M in new capital in January 2026 with total AUM over $1B. Our full breakdown of the Antler model is in the Antler vs Y Combinator comparison.
The tradeoff to accept honestly: Antler's model requires full-time commitment during the residency, which usually means leaving your job. The equity taken (8-12% in most regions) is higher than YC or SPC in exchange for the pre-team support.
3. Entrepreneur First
Deal: £80K-£120K for 8-10% equity via SAFE. Small stipend during the Form phase. Some follow-on capital available from EF's own fund or partners.
Program: 6 months in two phases. "Form" phase (roughly 3 months) is co-founder matching and idea validation. "Launch" phase is the build sprint after EF invests in the strongest teams.
Locations: London, Paris, Berlin, Bangalore, Singapore. No active US program as of mid-2026. EF ran New York cohorts from 2019-2020, then wound down US operations to refocus on Europe and Asia. A US relaunch has been speculated after the March 2026 fundraise but is not confirmed.
Best for: Deep-tech and technical founders based in or willing to relocate to Europe or Asia. US-based founders who want a similar pre-idea, technical-focused model should look at Neo, HF0, or SPC instead.
Entrepreneur First pioneered the "talent investor" model in 2011. Where Antler leans toward SaaS and commercial products, EF has historically attracted a heavier concentration of researchers, PhDs, and technical founders working on hard problems. Notable EF alumni include Tractable (unicorn, AI for insurance), Cleo, and Magic Pony Technology (acquired by Twitter). The portfolio combined value is over $11 billion.
EF raised $200M in March 2026 from Reid Hoffman, Eric Schmidt, Patrick and John Collison, and Greylock. The fundraise is signal that the pre-idea model has continued institutional support.
The comparison with Antler is the natural next question for European and Asian applicants. Antler tends to move faster and target SaaS; EF takes longer and skews toward deep tech. The full breakdown is in our Antler vs Entrepreneur First comparison.
4. Neo Accelerator
Deal: $750K uncapped SAFE (no valuation cap) plus $450K+ in compute credits. Approximately 0.75-5% participation rights depending on the specifics. Student track: $40K no-strings grant.
Program: 3-month workspace in San Francisco plus an Oregon bootcamp. Backed by Microsoft, OpenAI, and Ali Partovi (former Dropbox, Airbnb early investor).
Best for: Technical AI-native founders, including students and recent graduates, who want maximum capital at the earliest possible stage with minimal dilution. Strong US alternative for founders who might otherwise consider EF.
Neo's economic terms are among the most founder-friendly in the pre-idea category:
- Uncapped SAFE: Neo participates on your next round's valuation instead of setting an early valuation cap that would compress future upside
- 0.75-5% participation rights: variable and structured favorably relative to programs demanding 7-10% equity outright
- $40K no-strings grant (student track): rare direct path for university-affiliated founders
Neo has become one of the more talked-about programs in AI-native founder circles specifically because of its terms and its Partovi network.
5. HF0 Residency
Deal: Up to $1M uncapped SAFE for 5% equity.
Program: 12 weeks in San Francisco. Rolling applications. Explicitly designed for repeat founders and highly technical builders.
Best for: Repeat founders and senior technical people who have started companies before and want maximum capital with a short, intensive residency structure.
HF0 sits in a specific niche: founders who do not need much hand-holding, want serious capital, and are willing to relocate to SF for a three-month intensive. The 5% equity for up to $1M compares favorably with YC's 7% for $500K when you factor in the higher capital and the uncapped SAFE structure that participates on next-round terms.
The bar for admission is higher than most programs on this list. HF0 selects for demonstrated technical execution and prior founding experience.
6. Founder Institute
Deal: 2.5% warrant via the Equity Collective (reduced from 4% in February 2022). Warrant triggers only on a capital raise, meaning founders who bootstrap owe nothing.
Program: 14-16 weeks, part-time compatible. Applications rolling. Operates in 200+ cities across 100+ countries.
Best for: Aspiring founders who have not yet quit their job, first-time founders in cities without strong startup ecosystems, and founders who want structured early-stage development at low dilution.
Founder Institute is the largest pre-seed program in the world by geographic footprint. It is also the most accessible in terms of admission (open online application, no relocation required) and the least demanding in terms of upfront equity. The 2.5% warrant structure means the equity cost only materializes if the company raises institutional capital; bootstrapped founders never pay it.
Founder Institute stats worth knowing:
- 8,900+ founders funded across 16 years
- $2B+ raised collectively by alumni companies
- $20B estimated portfolio value
- 33% women founders globally, higher than any other major program
The tradeoff to know: FI is early-stage development, not high-signal fundraising acceleration. The program is designed to help pre-idea founders become fundable, not to guarantee follow-on capital. Founders looking for the YC-style demo day introduction to investors should look elsewhere.
7. On Deck Founder Fellowship (ODF)
Deal: No equity. Pay-what-you-can (~$1K suggested).
Program: 1-week in-person sprint in San Francisco plus a year-long online community. Rolling applications. Recent cohort (ODF27) kicked off February 2026.
Best for: Founders who want a strong pre-idea community and network without giving up equity, especially those who are earlier in their exploration and not yet ready to commit to a formal residency.
ODF has evolved from its original longer-form structure into a compressed, community-first program. The value is less about capital and more about placing you in a curated cohort of similar-stage founders with year-long access to office hours, peer feedback, and warm investor introductions when you are ready.
The zero-equity structure is unusual for a program with ODF's brand and network. The lightweight commitment makes it a reasonable parallel step alongside more intensive residencies.
8. Solo Founders Program
Deal: $100K for 2.5% equity with no special rights.
Program: Small cohorts, no demo day, no artificial timeline. Built exclusively for solo founders. Created by the On Deck team.
Best for: Solo founders who want a structured program where the entire community is built around single-founder companies.
The Solo Founders Program was created after On Deck observed enough solo-built companies in their portfolio to decide the conventional wisdom (that startups need co-founding teams) was wrong for a specific class of founders. It is the only program on this list built exclusively for solo founders.
The 2.5% equity for $100K is favorable for a truly pre-idea solo path. The absence of a demo day matches the reality that solo founders often build on different timelines than teams and benefit from open-ended runway more than compressed pitch cycles.
For the broader solo-founder question of which accelerators genuinely welcome you, see our top Antler alternatives guide, which covers programs open to solo applicants.
9. Antler Disrupt
Deal: Structured sprint terms for emerging tech founders; specific terms depend on the specific vertical and location.
Program: Sprint-format program for founders building in emerging technology categories. Spring 2026 cohort applications open.
Best for: Founders building at the frontier of emerging tech (climate, quantum, novel AI, robotics) who want a shorter, focused Antler experience without the full 6-month residency.
Antler Disrupt is Antler's newer offering for founders who are further along than the traditional day-zero applicant but earlier than a Series A-ready company. The sprint format compresses the traditional Antler experience into a shorter, more focused window aimed at founders in emerging technology categories.
10. Creative Destruction Lab (CDL)
Deal: No equity taken; grant-based support model.
Program: 9-month objectives-based program hosted at universities including Toronto, Oxford, HEC Paris, and 16+ sites globally including new locations in Texas, Milan, London, and Doha. Focus areas include AI, quantum computing, health, climate.
Best for: Frontier science founders working on hard technical problems with long research timelines who benefit from structured milestone-setting sessions with accomplished entrepreneurs.
CDL is genuinely different from the other programs on this list. It is not a residency, does not take equity, and runs over 9 months instead of 3-6. The core mechanism is quarterly objective-setting meetings with accomplished founders and investors who help early-stage technical companies commercialize research.
CDL portfolio companies have generated over $51 billion AUD in equity value. The program is particularly strong for founders spinning out of research labs or building deep tech that requires patient capital.
What Pre-Idea Programs Do Not Do
The honest limits of the category, since this is the section most guides skip:
They do not guarantee follow-on capital: even SPC's $600K "guaranteed" comes only if you close an external round. If you never raise, the guarantee never triggers
They do not fix a founder who is not ready: the programs help founders who are close to formed. They do not turn people who are not builders into founders
They do not compress the seed round: most pre-idea programs get you to a well-formed idea and early product. Actually raising a seed round is still a separate 3-6 month process after
They do not remove the personal cost of founding: every residency program on this list requires you to leave your job for the residency period. The programs make founding possible, not comfortable
They do not replace domain expertise: pre-idea programs help you meet co-founders and validate ideas. They do not give you knowledge of a market you have not lived in
Work With Ellenox on the Path Before a Program
If you are pre-idea and considering an accelerator like SPC, Antler, or EF, the version of you who applies six months from now with a sharper thesis, a validated direction, or an early product is a materially stronger applicant than the version applying today.
Ellenox works with early-stage founders and technologists as a venture studio, embedding senior engineers, AI developers, product designers, and go-to-market operators to help you validate direction, ship the first version of a product, and enter accelerator applications from a position of strength.
For some founders, the studio work leads directly to a fundable company without an accelerator ever being necessary. For others, it produces the traction that turns a marginal accelerator application into a strong one.
If you are exploring what to build and want an execution partner rather than a residency, talk to Ellenox.