Decidi vs. Perplexity
Cited answers from the web, or a council that reviews your own work.
Decidi vs. Perplexity: the short answer
Perplexity is an AI answer engine: ask a question and it searches the web and returns a synthesised, cited, up-to-date answer — and on its Max tier ($200/month), a Model Council can put the question to three models at once with a synthesiser combining the result. Decidi does a different job with the same ingredients — every council runs its own live web research first, so the volatile facts (rates, prices, statutes, versions) come in cited and dated, and then rival frontier models debate what to do about them across structured rounds. After the synthesis, Decidi adds a step Perplexity’s council doesn’t describe: a Final QA audit, run on a model from a different lab to the one that chaired, before the verdict lands as a finished deliverable. Perplexity tells you what is true; Decidi decides what to do about it and signs the answer off — with the full Multi-Agent run included in Plus at $19/month.
What Perplexity does well
Perplexity is one of the best tools for fast, trustworthy research — it pulls real-time information from across the web and shows its sources, so you can chase down where an answer came from. And its Model Council is a genuine multi-model feature: three models answer at once, and a synthesiser resolves one combined answer that shows where they agreed and differed. For “what’s the answer to this question,” it’s excellent.
Where Decidi is different
They solve different problems, even now both run several models. Perplexity answers questions from the public web — and its Model Council, on Max at $200/month, has the models answer inside one run with a synthesiser combining the result as the final step. Decidi reviews the specific work you give it: independent models from rival labs challenge each other on your draft, surface where they disagree, and after the moderator synthesises a verdict, a Final QA audit at a separate lab reviews it before you act — returned as a finished deliverable, not a reply.
The difference that matters most: an always-on Final QA audit reviews every verdict against known AI failure modes before it’s final — so you act on a result that’s been checked, not just generated. See the Trust Stack →
Questions
Is Decidi a search engine like Perplexity?
No. Decidi doesn’t browse the web to answer questions — it convenes multiple AI models to review, challenge and improve work you bring it, then audits the result. They’re complementary tools for different jobs.
Doesn’t Perplexity’s Model Council do what Decidi does?
They share the multi-model idea, and Perplexity’s version is genuinely useful for research: three models answer at once and a synthesiser resolves one combined answer that shows where they agreed and differed. Two differences matter. Access: Model Council sits on Perplexity Max at $200/month, while Decidi’s full Multi-Agent run is included in Plus at $19/month — and chat is free, with no account. Structure: in Model Council the synthesiser’s combined answer is the last step of the run; Decidi separates the powers — rival labs debate across rounds, a moderator synthesises, and then a Final QA audit on a model from a different lab reviews the verdict before it’s final.
Can I use both Perplexity and Decidi?
Yes, and many people would. Use Perplexity to research the facts, then use Decidi to have a council pressure-test the work you build from them before you commit.
Chat free · no sign-up, no card