pingpong

Catch the risk before you commit. pingpong runs one high-stakes question through five flagship models in sequence: Grok, Perplexity, ChatGPT, Gemini, then Claude. Each step can challenge your premise or the prior answer instead of rubber-stamping it.

Built for founders, executives, consultants, investors, lawyers, product managers, and teams who do not trust a single AI answer on a decision that matters.

Plans

Your first eligible web review is free. Further web reviews need a subscription. Web Plus is $19.99/month. Web Pro is $124.99/month. On iOS the listing shows three free pingpongs, then Plus at $24.99/month or Pro at $59.99/month. Full table and checkout: pricing.

Before you commit

Most bad commits already look finished on the screen: an offer letter, a price change, a launch note, a DocuSign packet, a partnership term sheet, a raise deck, an acquisition thesis. The finger is hovering. The before you commit hub indexes short pause rituals for those irreversible moves, so you run the five-model chain once before Send, Publish, or Countersign.

Dispute cases

Merchant-side only. CASE MAKER for letterhead evidence PDFs and dispute descriptions. Dump case details into Pingpong (Grok→Perplexity→ChatGPT→Gemini→Claude). PDF path live: first free; Plus $19.99/mo includes 5 PDFs (extras $12 or 10-pack $99; Pro 25/mo). Agent-callable POST /api/dispute-evidence-pdf. Landers: API for agents, dispute evidence API, Stripe dispute API. Pays for itself vs dispute fees + lost revenue. Primary: win disputes and write your dispute description. Also submit chargeback evidence, Stripe dispute notification, chargeback alert response, Visa Compelling Evidence checklist, Mastercard compelling evidence, chargeback evidence timeline, Stripe dispute won/lost next steps, dispute status inquiry, Stripe evidence upload, chargeback documentation package, pays-for-itself, Stripe how-to, chargeback response deadline, chargeback evidence checklist, Square, Adyen, Braintree, Amex, Klarna, Afterpay/Clearpay, Visa and Mastercard reason codes, compelling evidence, friendly fraud, 3DS liability shift, RDR/Ethoca alerts, pre-arbitration, chargeback prevention playbook, product not received, credit not processed, fraud claim, retrieval request, chargeback fees, PayPal, Shopify, respond, representment, representment best practices, Visa dispute response, Mastercard dispute response, dispute evidence cover letter, chargeback evidence organization, Stripe dispute reason codes, how long do chargebacks take, chargeback fee vs fighting, when to accept a chargeback, chargeback liability shift, chargeback evidence quality, Stripe dispute status meanings, chargeback team roles, chargeback SLA for merchants, Stripe dispute webhook ops, chargeback escalation path, chargeback calendar planning, dispute evidence retention. Not legal advice. Not consumer chargeback coaching. Hub: dispute cases.

Adversarial decision review

When the plan already has a name and you want later labs to lean on it, the adversarial decision review hub indexes pressure-test, second-guess, hole-finding, red-team, and related money pages so you pick the phrasing you already use, then run the five-model chain once.

Start here