“Should I pivot my SaaS or double down on the current market?”
Run any question through multiple AIs simultaneously. See who wins, why it matters, and which one to trust — in seconds.
The problem
Every AI model has biases, blind spots, and knowledge gaps. When you rely on just one, you get one perspective — dressed up as truth.
The real insight lives in the disagreement. AI Arena surfaces it.
Each model has subtle tendencies baked into training. You can't tell which answer is skewed without comparing them all.
For real decisions — strategy, code architecture, research — one AI response isn't enough to act on confidently.
Manually querying ChatGPT, then Claude, then Gemini — then trying to compare them yourself — is slow and error-prone.
You get raw answers but no systematic way to evaluate quality, spot contradictions, or synthesize the truth.
The pipeline
Every arena runs through a standard verdict pipeline, with optional Debate Mode when you want judges to challenge each other before the final answer.
Submit
Your question goes to multiple models simultaneously. Same prompt, different minds, in parallel.
Anonymise
Responses are stripped of model identity. Exhibit A through E — judged on content alone, never by reputation.
Judge
1–3 powerful reasoning models analyze all exhibits independently, scoring accuracy, depth, and usefulness.
Debate
Turn on Debate Mode to add one response round where judges read the other reviews, defend or revise their ranking, and update confidence.
Verdict
One final arbiter synthesizes the blind reviews, optional debate, and final judge positions into a structured verdict with consensus, reasoning, and confidence.
Built for serious thinkers
From the prompt input to the final verdict, every step is designed to maximize insight quality.
All contestants respond simultaneously via OpenRouter. No waiting. 300+ models accessible with one API key.
Powered by OpenRouterModel identities are never shown to judges. No reputation bias. Evaluations are based purely on answer quality.
Blind evaluationUp to 3 independent judge models, each with expert system prompts. Then a Supreme Judge synthesizes the panel.
Up to 3 + 1 judgesWhen the decision needs extra pressure, judges can read each other's blind reviews and respond once before the final verdict.
Optional judge debateEvery final answer includes a consensus summary, traceable reasoning chain, and a 0–100% confidence score.
With confidence scoreEvery session is saved to your account. Review past verdicts, compare runs, and build a knowledge base over time.
Saved to SupabaseCustomize answer models, judge personas, system prompts, and the Super Judge. Save presets for repeat workflows.
Fully configurableCustom panels can choose super-powerful final arbiters like Opus 4.7, GPT-5.4, and Gemini 3.1 Pro Preview.
Custom final arbiterUse cases
Pick a situation that sounds like yours.
“Should I pivot my SaaS or double down on the current market?”
“Which pricing model makes more sense — usage-based or flat subscription?”
“Should I raise funding now or stay bootstrapped?”
“Is this market big enough to build a startup around?”
“Should I hire a generalist or two specialists first?”
“Which co-founder offer should I accept?”
“Should I launch now or wait for the product to be more polished?”
“Should I build feature A or feature B next quarter?”
“Which onboarding flow creates less friction?”
“Is this UX change worth the engineering cost?”
“Should we go B2B or B2C with this product?”
“Which landing page copy converts better — pain-led or outcome-led?”
“Which ad angle should I test first?”
“Should I focus on SEO or paid acquisition at this stage?”
“Which email subject line will get more opens?”
“Is this brand positioning strong enough or too generic?”
“Should I launch on Product Hunt or build an audience first?”
“Should I take the promotion or join the startup?”
“Is it too early to go freelance full-time?”
“Which offer is better — higher salary or more equity?”
“Should I specialize deeper or become more of a generalist?”
“Is getting this MBA actually worth it for my goals?”
“Should I learn Python or JavaScript first given my goal?”
“Which of these three books will actually move the needle for me?”
“Is this research paper credible or missing key counterarguments?”
“Which online course is worth paying for vs watching free content?”
“Should I move to a new city for this opportunity?”
“Is this investment risk worth taking right now?”
“Should I end this business partnership?”
“Which therapist approach suits my situation better?”
“Which AI model writes cleaner React components?”
“Should I use Next.js or Remix for this project?”
“Is Claude or GPT better at debugging Python?”
“Which AI-generated architecture is more scalable?”
Simple pricing
Start free. Upgrade when your decisions need more firepower.
Free
Tiny live trial for fast models.
Starter
Affordable normal use.
Pro
Serious balanced and debate use.
Power
Heavy custom and frontier use.
No — that's the core design. All responses are anonymised as Exhibit A, B, C etc. before judges see them. This eliminates reputation bias and forces evaluation on merit alone.
You're getting structured deliberation, not one opinion. Multiple models answer, independent judges evaluate, optional Debate Mode lets judges respond to each other, and a Supreme Judge synthesizes the result.
The answer step uses the curated chat model set wired into the app, while customization lets you tune the panel and Super Judge separately. The landing stats above update from the current app model registry.
Judge panels use a separate judge model pool, while Super Judge customization includes frontier final arbiters such as Opus 4.7, GPT-5.4, and Gemini 3.1 Pro Preview.
Yes. The Customize panel lets you adjust answer models, judge personas, system prompts, Super Judge model, and saved presets. Debate Mode can be toggled before judging starts.
Your arenas are stored in your private Supabase database with row-level security — only you can access your data. Prompts are never used for model training.
Contestant responses come back in parallel. Judging adds another pass, and Debate Mode adds one optional judge-response round before the Super Judge writes the verdict.
Stop guessing
Run your next important question through AI Arena. See what you've been missing.