tl;dr: As of October 7 2026, frontrun has flagged 9 South Park Commons startups: Whitney AI, Readable AI, Milana, AXION, Mistos, Centh, Soverin, Tardigrade and a stealth company from Kaifu Zhang. 3 are in the South Park Commons founder fellowship by their own description, 1 came out of the SPC residency, and 7 aren't on the SPC companies page yet.
South Park Commons hasn't published its fall 2026 founder fellowship class, and there's no public list of who's building at SPC right now. 8 of these 9 were flagged in september, the month the fall 2026 bootcamp started. follower counts are as of october 7 2026: of the 4 with a company account on X, the smallest has 40 followers and the biggest has 148. the other 5 are listed with the founder's X account.
which startups are in south park commons fall 2026?
| # | company | what it does | website | flagged |
|---|---|---|---|---|
| 1 |  Whitney AI (@try_whitney) |
the IDE for post-training | trywhitney.com | jul 24 |
| 2 |  Readable AI (@readableai) |
see what AI agents read on your site | tryreadable.ai | sep 8 |
| 3 |  Milana (@getmilana) |
an AI engineer for your product | getmilana.ai | sep 15 |
| 4 |  AXION (@axionlabsinc) |
a brain interface without surgery | axionclick.com | sep 8 |
| 5 |  Mistos (founder @andrewzbytek) |
AI-native engineering for power and energy | mistos.com | sep 11 |
| 6 |  Centh (founder @virdigurnoor) |
AI agents for healthcare workforce ops | centh.ai | sep 25 |
| 7 |  Soverin (founder @adeetyajain24) |
run-time cognitive models for games | soverinlabs.com | sep 18 |
| 8 |  Tardigrade (founder @calclavia) |
a typescript framework for durable agents | tardigrade.sh | sep 22 |
| 9 |  Stealth, Kaifu Zhang (founder @zhangkaifu314) |
a world model for markets | none yet | sep 18 |
1. Whitney AI: AI infra
Whitney AI is the IDE for post-training. teams find where their agent fails, turn that judgment into an eval, then train against it with RL, on-policy distillation or preference data, all in one workspace. the site says it was founded at the SPC residency, and lists cloudcruise, pensive and nuguard AI as customers.
40 followers · X: @try_whitney · founders: @vatsalbajaj (ex MLE at netflix and microsoft AI) and @nickmecklenburg (cto, prev post-training at microsoft superintelligence) · trywhitney.com · LinkedIn · flagged july 24th
2. Readable AI: AI search
Readable AI shows brands what AI agents read on their website: which pages chatgpt, gemini and perplexity crawl, and where the brand goes missing when buyers ask AI what to choose. it then fills the gap with an AI knowledge base and measures the buyers it sends. it used to be called SonicLinker.
64 followers · X: @readableai · team: san francisco, backed by south park commons · tryreadable.ai · flagged september 8th
3. Milana: product analytics
Milana is an AI product engineer. it goes through every session replay, ticket and transcript, ranks what's hurting conversion by impact, and hands the fix to claude or cursor. one snippet to install, findings the same day. it's one of the 2 here already on the SPC companies page.
124 followers · X: @getmilana · founders: @rohankatyal29 (prev product at meta, yelp and yahoo) and Raghav Sethi (led AI engineering at airtable) · getmilana.ai · LinkedIn · flagged september 15th
4. AXION: neurotech
AXION makes a non-invasive neural headband. it pairs EEG with eye tracking so people can navigate, communicate and click using thought and gaze, with no surgery. it's built for people who need assistive tech and is in pilots with rehabilitation centers. it's the other one of the 2 already on the SPC companies page.
148 followers · X: @axionlabsinc · founders: @tintunjic (SPC founder fellow) and Rajshekar Reddy (prev AR/VR systems for surgical robots at intuitive) · axionclick.com · LinkedIn · flagged september 8th
5. Mistos: energy
Mistos is an AI-native engineering firm for power and energy infrastructure. it delivers feasibility studies, early design and safety studies for energy, power and process plants in days instead of months. the site is one page: a process diagram and a password-gated customer presentation.
no company account on X yet · founder: @andrewzbytek (power engineer, neo) · mistos.com · flagged september 11th
6. Centh: healthcare
Centh runs AI-native workforce operations for healthcare. its agents handle credentialing, clinician onboarding, compliance and recruiting across the mail, spreadsheets, drives and ATS a staffing team already uses, while the team keeps the hiring calls and approvals.
no company account on X yet · founder: @virdigurnoor (columbia '24, SPC founder fellow, new york) · centh.ai · flagged september 25th
7. Soverin: gaming
Soverin is an AI-native game studio building run-time cognitive models. it's making a grand-strategy simulator where the world (climate, migration, trade) moves with every decision and you negotiate with rivals in plain language. the plan is its own titles, an AI-first engine, and powering other studios' games.
no company account on X yet · founder: @adeetyajain24 (founder and ceo, bengaluru) · soverinlabs.com · LinkedIn · flagged september 18th, 4 days after the founder's X account went live
8. Tardigrade: dev tools
Tardigrade is a typescript framework for durable, composable AI agents, built on effect TS. every event goes to an immutable log and state is reduced from it, so an agent can crash, resume and move anywhere, and the log doubles as the trace. self-host it or deploy to cloudflare. v0.44 is out.
no company account on X yet · founder: @calclavia (Henry Mao, prev co-founded jenni.ai and smithery.ai, which was acquired) · tardigrade.sh · flagged september 22nd
9. Stealth: AI research
Kaifu Zhang is building a stealth company, "somewhere between -1 and 0," with no name or site yet. the work is a world model for markets and behavior prediction. Kaifu is an F26 fellow at SPC, ex alibaba and a former carnegie mellon professor. more teams like this are on the 2026 stealth startups list.
no company account on X yet · founder: @zhangkaifu314 · flagged september 18th
what is the south park commons founder fellowship?
The founder fellowship is the funded way to join South Park Commons. Fellows get $1M: $400K for 7% upfront on a standard SAFE, plus $600K guaranteed in their next external round, along with working sessions with SPC partners and up to $1M in credits.
how is the spc founder fellowship different from the residency?
The member residency is six months with no cost and no equity, for people who aren't ready to raise or haven't decided to start a company. Fellows start funded and work with SPC partners several times a week. Both are full members of the same community.
when does the south park commons fall 2026 bootcamp run?
Applications for fall 2026 closed on August 2 and interview invites went out by August 30. The bootcamp runs in person for eight weeks, late September to late November, from SPC offices in San Francisco, New York or Bangalore.
which of these startups are on the south park commons companies page?
As of October 7 2026, 2 of the 9 are on southparkcommons.com/companies: Milana and AXION. The other 7 aren't listed there yet.
that's 9
frontrun's accelerator agent found them. it runs around the clock, across every cohort: yc, speedrun, founders inc, spc and more. it surfaces teams the moment they show up, before any directory lists them.
the fall bootcamp runs to late november. SPC hasn't published the class. we'll have the rest first.
see every cohort at frontrun.vc →
read next: 10 Founders Inc startups before the directory · a16z speedrun cohort 007, all 29 companies · YC F26 companies not in the YC directory
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