WhichAI.today

Best AI model for this job right now

Updated Oct 25, 2026. Checked daily.

#1 since Oct 25, 2026. No earlier leader is on record.

Leads the public board for models that search the web. These picks are readable without an account, and the details behind each one are on the card.

#1 Champion

GPT-5.6 Sol

OpenAI

ChatGPT with search, and select GPT-5.6 Sol.

Paid plan

Close race

Leads the public board for models that search the web.

LMArena Search 1261.

Open OpenAI
Details
Why it leads
LMArena Search 1261. Source.
Cost
Uses a ChatGPT plan. Check the plan page for the current price.
Free tier
A free plan may include limited search.
Privacy default
Yes on personal Free, Plus, and Pro. Improve the model for everyone is on by default. Settings, Data controls, turn off Improve the model for everyone. Source
When not to use it
Skip it when you need a citation you can open and the answer does not show one.
Starter prompt
Research this question. Name each source you used, and say what it does not answer.

Top Alternative

Claude Opus 4.6

Anthropic

Claude with web search, and select Opus 4.6.

Paid plan

A top search model from another provider on the same board.

LMArena Search 1251.

Open Anthropic
Details
Why it leads
LMArena Search 1251. Source.
Cost
Uses a Claude plan. Check the plan page for the current price.
Free tier
A free plan may include limited search.
Privacy default
Anthropic says Free, Pro, and Max chats are used for training only if you allow it, and you choose at signup. The toggle has been reported as on by default, so check it. Settings, then Privacy. Turn off Help improve Claude. Source
When not to use it
Skip it if you need the single highest score on the search board.
Starter prompt
Research this question. Separate what the sources say from what is still unknown.

Best Open Source

Diffbot-Small-XL

Diffbot

Diffbot, or the published weights for Diffbot-Small-XL on Hugging Face.

Free (limited)

The open-weights model with a public score on the search board.

LMArena Search 1023. Apache 2.0 weights.

Open Diffbot
Details
Why it leads
LMArena Search 1023. Apache 2.0 weights. Source.
Cost
The weights are under Apache 2.0. A hosted search API may be paid.
Free tier
The weights are free to download.
Privacy default
Privacy default not checked for this provider yet.
When not to use it
Skip it when you need the top of the search board.
Starter prompt
Find sources for this question and list what each one says.

Email

One email when a leader changes. Buttondown is the only service that holds the address, and it uses it only to send these alerts. Open and click tracking stay off. Privacy

Coming soon.

Leader history

A new number one has to show up on two daily checks before it replaces the current leader. Get alerts.

Put this on your site

Source: WhichAI.today, research leader as of Oct 25, 2026, whichai.today/research

Questions

Which AI is best for research & web search right now?

GPT-5.6 Sol from OpenAI leads, as of Oct 25, 2026. Leads the public board for models that search the web. The alternative is Claude Opus 4.6, and the open-weights pick is Diffbot-Small-XL.

Where do I get GPT-5.6 Sol?

ChatGPT with search, and select GPT-5.6 Sol. Uses a ChatGPT plan. Check the plan page for the current price.

Has this leader changed?

Tracking for this category began on Oct 25, 2026, with GPT-5.6 Sol as the first recorded leader.

Tasks

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