Comparison · 2026
IdeaRoast is the fastest option — $5 per report, 60 seconds, no account. IdeaProof produces the most polished output. WorthBuild goes deepest on competitor research but takes 2+ hours. ValidatorAI is the only subscription-based mentor tool.
We compared all four on price, speed, features, and what they actually tell you. No affiliate links. No paid placements.
Last verified: April 2026
| Feature | IdeaRoast← us | IdeaProof | WorthBuild | ValidatorAI |
|---|---|---|---|---|
| Price per report | $5 | from €19 | $5 | $25/mo (5 reports) |
| Free tier | Quick triage | Limited | 1/month | Basic (unlimited) |
| Pay-per-use (no subscription)ValidatorAI requires a monthly plan for real reports | ✓ | ✓ | ✓ | — |
| TurnaroundWorthBuild trades speed for deeper research depth | ~60 sec | 120 sec | ~2 hours | instant |
| No account required | ✓ | — | — | — |
| Multi-agent analysisIdeaRoast runs Market, Tech, Finance, and Timing agents — each with an independent mandate, all grounded in the same live market data | 4 agents | 3 AI models | — | — |
| Live market dataIdeaRoast uses Exa for real-time web search during analysis | ✓ | ~ | ✓ | — |
| Brutal / honest toneMost tools soften results. IdeaRoast does not. | ✓ | — | — | — |
| Actionable next steps (3–5) | ✓ | ~ | — | ~ |
| Shareable report link | ✓ | ✓ | ✓ | — |
| Pay by card | ✓ | ✓ | ✓ | ✓ |
| Pay with BitcoinOnly IdeaRoast accepts Bitcoin — useful for founders without a card or who prefer privacy | ✓ | — | — | — |
| Public leaderboard | ✓ | — | — | — |
| PDF / slide exportIdeaRoast is a diagnostic tool, not an investor deck generator | — | ✓ | — | ✓ |
| AI mentor chatbotValidatorAI's "Val" chatbot is included in the PRO plan | — | — | — | ✓ |
The verdicts
from €19/report · credit packs available
Solid mid-market tool. Three AI models (Claude, GPT-4, Gemini) cross-validate your idea, which reduces hallucination risk. Produces polished reports with TAM/SAM/SOM and competitor maps. Tone is encouraging rather than challenging — good if you want a structured write-up to share with a co-founder or team, less useful if you want to know where your idea is genuinely weak.
IdeaRoast vs IdeaProof →$5/report · free tier: 1 per month
The most research-heavy option in this comparison. Pulls competitor pricing data, SEO metrics, review summaries from G2/Trustpilot, and real customer signals — but generates reports in 2+ hours rather than seconds. Best if you have a shortlist of ideas and want deep market evidence before committing. Worst choice if you want fast iteration.
IdeaRoast vs WorthBuild →Free basic · $25/month PRO · $120 one-time accelerator
Freemium tool with a chatbot ("Val") that walks you through validation. PRO gives you 5 reports per month plus a customised startup roadmap. The subscription model means cost adds up fast if you're not validating continuously. Good for founders who want ongoing mentorship and structured guidance; weaker if you have one idea and just need a hard look at it.
IdeaRoast vs ValidatorAI →Our take
Most validators are built to make founders feel good. Encouraging scores, suggestions framed as opportunities, polished PDFs you can send to your mom. That's fine — but it doesn't help you figure out if your idea will actually work.
IdeaRoast runs four specialist agents — Market, Tech, Finance, and Timing — simultaneously. All four are grounded in the same live market data, but each has an independent mandate: one finds the competitive moat problem, another the unit economics flaw, another the timing risk. You get four different failure modes examined, not one AI agreeing with itself four times.
The output is blunt. If your idea has a structural flaw, we say so. If the timing is wrong, we explain why. And instead of one vague pivot suggestion, you get 3–5 specific actions to take in the next 7 days — not “consider exploring adjacent markets” but exactly who to call, what to test, and what a real signal looks like.
At $5, it's still less than a coffee. But the real math is different: $5 to find out now, or six months building the wrong thing to find out later.
Ready to find out the truth?
Get your idea roasted — $5Pay with Bitcoin · No account · Result in ~60 seconds
Competitor data sourced from public pricing pages and product descriptions, April 2026. Prices may have changed — verify before making purchasing decisions. IdeaRoast has no commercial relationship with any competitor listed here.