Pingpong runs one question through a sequence of flagship AIs. The first model answers. Each later model receives the original question, prior answers, and a review frame that allows agreement, correction, restructuring, or rejecting a weak premise. You get one final answer. Earlier passes stay available to inspect. Order is configurable. Available on web and iOS.
One question, five sequential reviews
After you submit:
- 1. The first model writes a response.
- 2. Each later model reviews the work so far against your original question.
- 3. Pingpong returns a final answer shaped by that chain.
- 4. You can read intermediate answers, not only the last line.
This is not five separate chats pasted together. It is one review chain with shared context.
Default sequence (and why you can reorder)
Default order:
- 1. Grok: first response
- 2. Perplexity: review
- 3. ChatGPT: review
- 4. Gemini: review
- 5. Claude: review
The first pass does not get the review frame. Later passes do. You can drag to reorder or remove models when you want a different first answer or a shorter chain.
Why start with a first answer at all? Someone has to draft. The product bet is that later models do better work when they can assess a concrete draft, not only invent from a blank page. Shared context helps correction. It also creates anchoring risk. We do not call this blind peer review or independent voting. See our approach.
The review frame (permission to disagree)
The review frame tells later models they may:
- Agree when the reasoning holds
- Correct facts, structure, or gaps
- Restructure the answer
- Reject a weak premise or decline to support a claim that lacks evidence
Candor is not compulsory disagreement. A model that always objects is as unhelpful as one that always flatters. The intended behavior is considered judgment.
That thesis is written out in Why the review frame matters. Related notes: sycophancy, mixture of agents, debate baselines.
Sequential review vs side-by-side compare
Side-by-side tools (Fixy-style debate rooms and model switchers) are useful when you want several independent angles visible at once.
Pingpong is different:
| Side-by-side / debate room | Pingpong sequential review | |
|---|---|---|
| Interaction | Models answer in parallel or in a shared room | Later models review prior work in order |
| Shared draft | Often optional or synthesized after | Built in: reviewers see earlier answers |
| Disagreement | Often the product surface | Allowed by the review frame, not forced |
| Output | Multiple takes or a consensus card | One final answer plus inspectable passes |
Neither design wins every case. Parallel compare is good for spotting divergence. Sequential review is aimed at stress-testing a line of reasoning before you commit. Fair write-up: Pingpong vs Fixy.
What you get that a single model can miss
A single model can sound confident while resting on a soft premise. A later reviewer that sees the question and the draft can flag:
- Unsupported leaps
- Missing edge cases
- Weak assumptions in the question itself
- Alternatives the first pass skipped
We do not publish fake accuracy lift numbers here. The research library explains why review framing matters and where multi-model methods can still fail: research.
Fast vs Pro, attachments, when to use it
- Fast: quicker responses for everyday checks
- Pro: extended thinking for harder decisions
- Attachments: images, PDFs, spreadsheets, code, documents
- Platforms: web and iOS
Use Pingpong when the cost of a wrong commit is high. Use one strong model when you only need a draft, a rewrite, or a low-stakes brainstorm. Plan limits: Pricing. Buyer questions: FAQ.
Try it
- Start on pingpongit.com
- Or download on the App Store
- Read the product definition: What is Pingpong
- Read the thesis: our approach