Extended Thinking vs Web Search vs Research: which Claude mode to hit and when

7 min read  ·  Modes explainer  ·  Last updated 13 May 2026

Part of Learn Claude Code: The Complete Operator's Guide. For the operator's overview of Skills, Connectors, Cowork, and Artifacts, start there.

Open Claude. There are three buttons most people walk past every day.

Extended Thinking. Web Search. Research.

Three different jobs. The wrong button gets you the wrong answer. The right one cuts a 30-minute task to 30 seconds.

This post is the plain-English guide to when to hit each.

The 10-second rule of thumb

Thinking is for deliberation. Search is for facts. Research is for reports. That is the whole map.

Extended Thinking: when Claude should slow down

By default Claude responds quickly. Extended Thinking tells it: spend more time on this before answering.

You toggle Extended Thinking when the problem has many constraints, many steps, or many possible answers and you want the considered version.

Three good Extended Thinking prompts

For chat prompts and quick answers, do not bother. Extended Thinking is for the deep ones.

Web Search: when Claude needs the internet

Claude was trained on data with a cutoff. Anything after the cutoff is invisible to it unless you toggle on Web Search.

You toggle Web Search when the answer depends on what happened recently. Today's stock price. This week's news. The current pricing of a competitor.

Three good Web Search prompts

If you ask Claude something current without Web Search on, it will either guess from training data (often outdated) or tell you it does not know. Toggle it on. Source citations come back automatically.

Research: when you want a report, not an answer

Research is the longest-running mode. Claude searches, opens multiple sources, reads each, cross-references, and produces a structured synthesis. It is the closest thing in Claude to a junior analyst writing a brief.

You toggle Research when you want a 1-2 page document with multiple sources cited, not a one-paragraph chat reply.

Three good Research prompts

Research is slow. Five to ten minutes is normal. You get back a structured document with citations. Treat it like a draft from a junior, not a finished product.

A comparison table

A common mistake: combining them when you should not

People sometimes toggle on all three at once thinking they get the best of all worlds.

You do not. You get a slower answer that does not necessarily land better.

Pick the one that fits the job. If you need facts AND deliberation, do Web Search first to pull the facts, then a follow-up message with Extended Thinking to deliberate on what you found.

Pairing modes with skills

We run the room through these three modes side-by-side at our Claude Code workshop. Most operators only ever hit one of these three buttons before training; afterwards, picking the right one becomes automatic.

The leverage step: a skill that knows when to recommend which mode.

We have a skill called research-brief that always runs in Research mode and outputs in our brief format. When we ask for "a competitor brief on X", the skill triggers, switches modes, and runs.

That is the operating-stack idea again. Skills 101 covers the foundation.

What to do next

Tomorrow morning, the first prompt you write: pause for two seconds. Pick the right mode for the job. Hit it.

Do that for a week. You will notice the difference in your answers.

Anthropic's official comparison guide for these modes is at support.claude.com.