Which AI do you believe?

Buy a flat now with a 5% deposit, or rent for two more years and save?

Real answers from our test on 8 November 2026. Each model had to pick one side.

GPT-6 Astra

Rent

Renting can help build a larger deposit and emergency buffer before taking on mortgage debt.
GPT-6.1 Sol

Rent

Rent to build a larger deposit and a financial cushion before taking on substantial debt.
GPT-6 Luna

Rent

Renting two more years can build a safer deposit and preserve flexibility while you assess affordability.
Claude Opus 5.5

Rent

A bigger deposit gets cheaper mortgage rates and protects you from negative equity if prices dip.
Claude Sonnet 5.5

Buy

Waiting risks rising prices and rents, while a 5% deposit still builds equity if you stay long-term.
Claude Haiku 5.5

Rent

A 5% deposit leaves heavy mortgage debt, high transaction costs, and price-drop risk, so saving two more years usually strengthens your position.
Gemini 4 Argon

Buy

Buying now starts building equity immediately and hedges against future property price increases.
Gemini 3.8 Flash

Rent

A larger deposit secures significantly lower mortgage rates and reduces negative equity risks.
Grok 4.7

Rent

A 5% deposit leaves little buffer if prices or rates move against you.
DeepSeek V4 Pro

Buy

Locking in a mortgage now beats risking higher prices and rents later.

Seven said rent. Three said buy.

Claude Opus 5.5 and Sonnet 5.5 disagree, and so do the two Geminis. Each model gave the same verdict both times we asked. These are AI opinions, not financial advice.

Not sure who to trust? Put a few side by side, ask twenty at once, or test them on your own prompts.

Compare your own question Free to start. No card needed.

Put a few side by side

Pick the models you want and ask once. Read the answers next to each other, then carry on the conversation from the one you trust.

Compare answers

An employee in England started her job on her 35th birthday and is made redundant on her 45th birthday, so she has exactly 10 years' service. Her weekly pay is £500, which is below the statutory cap. How much statutory redundancy pay is she entitled to?

GPT-6.1 Sol

6 years, from her 35th to her 41st birthday: 6 × £500 = £3,000.

4 years, from her 41st to her 45th birthday: 4 × 1.5 × £500 = £3,000.

£6,000

Right on both tries

Continue with this

GPT-6 Luna

Five years ended while she was aged 40 or younger, and five ended when she was aged 41 or older.

That gives 5 × 1 week + 5 × 1.5 weeks = 12.5 weeks’ pay.

£6,250

Wrong on both tries

Continue with this

Claude Haiku 5.5

This treats the year ending on her 41st birthday as a year worked at age 41 or over. If it were counted at the lower band, the figure would be £6,000.

£6,250

Second try. First said £6,000

Continue with this

Your next message carries on from GPT-6.1 Sol’s answer. Your next message carries on from GPT-6 Luna’s answer. Your next message carries on from Claude Haiku 5.5’s answer.

Real answers from our test on 8 November 2026, shortened. Each model was asked twice, and £6,000 is correct. See every answer

Up to 10 models per message

These are the models whichai.chat recommends today, and the model picker lists many more. Answers can use Web Search with citations, and take PDFs, text files and images.

Gemini 3.8 FlashGoogle
GPT-5.6 LunaOpenAI
GPT-6 AstraOpenAI
GPT-6.1 SolOpenAI
Gemini 4 ArgonGoogle
Sonar Deep ResearchPerplexity
Claude Sonnet 5.5Anthropic
Claude Opus 5.5Anthropic
GLM 5.3 FlashZ.ai

Ask twenty at once

Put one question to twenty leading AI models and read one answer, in plain language, with every model’s own reply underneath.

Ask twenty models

It works best for general advice and reasoning that doesn’t need recent or live information. If yours does, it says so first and offers the side-by-side view with web search and five of the top models.

Should I accept a counter-offer after handing in my notice?

Turn it down unless money was the only problem.

Most of the panel would decline the counter-offer. The reasons you started looking tend to come back once the pay rise wears off, and your employer now knows you were ready to leave. A smaller group says it can be worth taking if pay really was the only issue and nothing else about the job bothers you. Either way, get any new offer in writing before you reply.

An example of the kind of answer you get back, not a saved result.

Test them on your own prompts

Save the prompts your work depends on and run them across up to 25 models, up to ten times each. Rate every answer with stars, check for the answer you expect, or let a judge model mark them, then publish the result as a leaderboard.

Test your own prompts

Reply to this customer who wants a refund for a damaged order.

GPT-6.1 Sol
GPT-6 Astra
Gemini 3.8 Flash

Example ratings. Publish yours as a leaderboard

A different model won each round

Our own test of ten models on 36 everyday prompts and 36 harder prompts, each asked twice. Checked answers were marked automatically, code was run against hidden tests, and a judge model marked the writing.

Everyday prompts, 7 November

Harder prompts, 8 November

Grok 4.7 99.8%
GPT-6 Astra 99.2%
GPT-6.1 Sol 98.9%
Gemini 3.8 Flash 98.7%
Claude Sonnet 5.5 98.6%
Gemini 4 Argon 98.6%
GPT-6 Luna 98.5%
DeepSeek V4 Pro 98.2%
Claude Haiku 5.5 97.7%
Claude Opus 5.5 97.6%

GPT-6.1 Sol 99.7%
GPT-6 Astra 99.4%
Gemini 3.8 Flash 98.9%
Claude Sonnet 5.5 98.6%
Gemini 4 Argon 98.2%
Grok 4.7 97.4%
Claude Opus 5.5 97.2%
GPT-6 Luna 95.6%
Claude Haiku 5.5 92.2%
DeepSeek V4 Pro 88.8%

One answer is worth about 1.4 points, so models that close together are effectively level. Claude Opus 5.5 returned no answer twice, which counted as 0. DeepSeek V4 Pro returned no answer 3 times, so the run stopped sending it prompts and 39 of its 72 tries were never made. Its score covers the 33 that were, with the empty replies counted as 0.

What it costs

Sign up for free with Raq.com and you’re ready to go. A new account comes with a free AI allowance to try each of these once. No card needed.

Comparing a few

Each answer uses allowance in line with that model’s own price and the length of the reply, so four models cost about the same as four separate answers.

Asking twenty

Twenty models at their highest reasoning setting, plus the written summary, so one run uses more allowance than asking a few models.

Testing your own

Every run shows the AI usage it will take before any model is called, and a cap stops it if the cost runs past that.

Paid plans start at $39 per user a month and include AI usage for every AI tool on Raq.com.

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Questions

Is this ChatGPT?

No. whichai.chat sends your question to models from OpenAI, the company behind ChatGPT, and from Anthropic, Google and others, through their APIs. You get each model's answer in one place without paying for the ChatGPT, Claude or Gemini apps.

Which AI is best?

It depends on the question. When we gave 10 current models the same 36 harder prompts on 8 November 2026, they scored between 88.8% and 99.7%. DeepSeek V4 Pro was cut off after 3 empty replies, so its score, the lowest, covers only 33 of its 72 tries. On 36 everyday prompts on 7 November 2026, they all scored between 97.6% and 99.8%. The quickest way to find out for your own work is to ask the same thing and read the answers next to each other.

How many models can I ask at once?

Up to ten in one message, or twenty leading models at once with one consensus answer. Start with one, add more when you want a second opinion, and save a set you use often.

Can the models search the web?

In the side-by-side view, yes: tick Web Search and each model can look things up before it answers, with citations in the reply. The twenty-model answer is for general advice and reasoning that doesn't need recent or live information, so a quick check looks at your question first and suggests the side-by-side view with web search if it does.

Do the models keep what I type?

An account owner or admin can turn on Zero Data Retention in Raq.com's AI settings. Chats then only use models that don't store or retain your prompts and responses, so a few models drop out of the list while it's on.

Can I bring my ChatGPT or Claude history?

Yes. Download your data export from ChatGPT or Claude and upload it under Import chats. Your past conversations appear beside the new ones.

Got a question you can’t settle?

Ask it once and see what comes back.

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