What Claude (Anthropic) with web search answered for business formation services (startups) on 2026-09-15

Claude (Anthropic) with web search claude-opus-5 asked 2026-09-15

Coverage: Claude (Anthropic) with web search. Other engines not included.

The question asked, verbatim: best business formation services for startups

Brands named, in the order the engine gave

1. Clerky mentioned
   Clerky - $499 for the full startup stack.
2. Y Combinator mentioned
   It's built specifically for venture-track US startups and is what most Y Combinator companies use: Delaware C-corp formation, founder stock with vesting, 83(b) elections, board consents, SAFEs, and option grants.
3. Stripe mentioned
   One thing to verify yourself: multiple sources report Clerky announced in August 2026 that it's joining Stripe while operating independently.
4. Stripe Atlas mentioned
   Stripe Atlas - flat $500.
5. Northwest Registered Agent mentioned
   Northwest Registered Agent - $39 + state fees.
6. ZenBusiness mentioned
   ZenBusiness - $0 + state filing fee on the Starter tier.
7. Trustpilot recommended
   Best for genuinely first-time founders who want hand-holding: startup cost calculators, domain/website/business email in one place, and the strongest customer-satisfaction record (4.8/5 across ~31,000 Trustpilot reviews).
8. Bizee mentioned
   Bizee (formerly Incfile) - free tier with a year of registered agent.
9. LegalZoom mentioned
   LegalZoom - I'd name it only because you'll see it everywhere.
10. Firstbase mentioned
    Non-US founders: doola (~$297) and Firstbase (~$399) target you specifically, bundling address, mailroom, and bookkeeping.
11. Rho mentioned
    - Rho - The 6 Best LLC Formation Services (https://www.rho.co/blog/best-llc-formation-services)

Sources the engine cited

The answer, as recorded

Short version: the right answer splits hard on one question - **are you raising venture money or not?** The tools barely overlap. ## If you're a venture-track startup (Delaware C-corp, planning to raise) **1. Clerky - $499 for the full startup stack.** This is my default recommendation. It's built specifically for venture-track US startups and is what most Y Combinator companies use: Delaware C-corp formation, founder stock with vesting, 83(b) elections, board consents, SAFEs, and option grants. The value isn't the incorporation - it's that two years later when a real investor's lawyer does diligence, your paperwork is clean. Its templates handle uneven founder splits and non-standard vesting, which the more automated flows don't. One thing to verify yourself: multiple sources report Clerky announced in August 2026 that it's joining Stripe while operating independently. If true it probably doesn't change much near-term, but confirm the current state before committing. **2. Stripe Atlas - flat $500.** Pick this if speed and getting operational fast matter more than paperwork edge cases. Incorporates in ~1-3 days and includes the state filing, EIN (auto SS-4 filing), founder stock purchase agreements, an 83(b) generator with the certified-mail letter, and year one of registered agent (~$100/yr after). It's the fastest path to an incorporated company with a bank account and payments running. The catch: the flow assumes roughly equal founder splits and standard 4-year/1-year-cliff vesting. If your cap table is weird, that's Clerky's territory. **3. An actual startup law firm.** Not a product, but worth naming as a real option: Cooley, Gunderson, Orrick, and Fenwick all do flat-fee or deferred-fee formation packages for companies they think will raise. If you're raising a priced seed round in the next six months, the $500 you save on software is noise against getting the structure right. Do not use a general LLC service for this. And don't form an LLC at all if you're raising - investors want a Delaware C-corp, and converting later costs real money. ## If you're bootstrapping (LLC, small business, no VC) **1. Northwest Registered Agent - $39 + state fees.** My pick. Cheapest genuine entry point, transparent pricing with no upsell maze, privacy-by-default (they use their address on public filings instead of your home), and a named US-based support contact. Registered agent renews at a predictable rate rather than jumping. **2. ZenBusiness - $0 + state filing fee on the Starter tier.** Best for genuinely first-time founders who want hand-holding: startup cost calculators, domain/website/business email in one place, and the strongest customer-satisfaction record (4.8/5 across ~31,000 Trustpilot reviews). Pro is ~$199/yr (one-day processing, operating agreement, EIN) and Premium ~$349 (adds registered agent). The $0 tier has no renewal fee attached to the formation itself. **3. Bizee (formerly Incfile) - free tier with a year of registered agent.** Best raw first-year value. Watch the trap: that free registered agent renews at $149/year, which is the most expensive of the three. Fine if you'll switch; bad if you forget. **4. LegalZoom** - I'd name it only because you'll see it everywhere. It's the most complete start-to-scale platform with real legal and tax add-ons, but you pay a brand premium over Northwest for the same filing. **Non-US founders:** doola (~$297) and Firstbase (~$399) target you specifically, bundling address, mailroom, and bookkeeping. Firstbase gets notably mixed reviews on delays and support in comparison write-ups - worth reading recent ones before paying, though I'd weight those SEO-driven comparison sites lightly. ## Two things that matter more than which one you pick Calculate your **year-two** cost, not year one - the free tiers are loss leaders and registered agent renewal is where the margin hides. And in most states you can file the formation yourself on the Secretary of State website for just the state fee; what you're buying from these services is the EIN, operating agreement, registered agent, and compliance reminders, not access to the filing. Sources: - [Forbes Advisor - Best LLC Formation Services of 2026](https://www.forbes.com/advisor/business/best-llc-service/) - [Rho - The 6 Best LLC Formation Services](https://www.rho.co/blog/best-llc-formation-services) - [Rho - Stripe Atlas vs. Clerky vs. LegalZoom: 2026 Incorporation Guide](https://www.rho.co/blog/stripe-atlas-vs-clerky) - [Stripe Atlas](https://stripe.com/atlas) - [Flowjam - Clerky Review 2026](https://www.flowjam.com/blog/clerky-review-2026-pricing-alternatives-by-founder-type) - [ZenBusiness - 7 Best LLC Services Reviewed (September 2026)](https://www.zenbusiness.com/best-llc-services/) - [LLC University - Bizee (Incfile) Alternatives](https://www.llcuniversity.com/incfile-alternatives/) - [Startup Savant - Stripe Atlas Alternatives](https://startupsavant.com/service-reviews/stripe-atlas-alternatives) - [Quicksprout - Best Business Formation Services](https://www.quicksprout.com/best-business-formation-services/)

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