> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nexalai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Reasoning

> Control how much the AI thinks before answering.

## What is Reasoning?

Reasoning controls how much thinking the AI does before it answers. More reasoning means the AI works through the problem step-by-step, like showing its work in math class.

## Why It Matters

Some questions are simple: "What's 2+2?" The AI doesn't need to think hard about that.

Other questions are complex: "Design a database schema for a social media app." For that, you want the AI to think through all the edge cases and trade-offs.

Reasoning lets you control which approach to use.

## Reasoning Levels

**Low:** Fast responses, minimal thinking. Good for straightforward questions.

**Medium:** Balanced approach. The AI thinks a bit before answering. Works for most questions.

**High:** Deep thinking. The AI works through the problem methodically. Best for complex problems.

## When to Use Each Level

### Low Reasoning

* Simple facts ("What year did this happen?")
* Quick definitions
* Basic calculations
* When you just need a fast answer

### Medium Reasoning

* Most everyday questions
* Explanations of concepts
* General advice
* Default for most conversations

### High Reasoning

* Complex problem-solving
* Debugging tricky code
* Analyzing multiple options
* When accuracy is critical
* Math problems with many steps
* Architecture decisions

## How to Control Reasoning

Look for the reasoning controls in your chat interface. You can find them in the options menu.

## What You'll Notice

**With low reasoning:**

* Faster responses
* More direct answers
* Sometimes less thorough

**With high reasoning:**

* Slower (but more thoughtful) responses
* The AI might show you its thinking process
* More comprehensive answers
* Better for complex topics

## Thinking Mode

On web, there's also a Thinking Mode that shows you the AI's reasoning process as it works through your question. It's like watching the AI think out loud.

This is great for:

* Understanding how the AI solved a problem
* Learning problem-solving approaches
* Verifying the logic behind an answer

## Plan Availability

Reasoning controls are available on most paid plans:

| Plan | Reasoning Controls |
| ---- | ------------------ |
| Free | No                 |
| Lite | Yes                |
| Plus | Yes                |
| Pro  | Yes                |
| Max  | Yes                |

<Note>
  Start with medium reasoning for most things. Dial it up to high when you hit a tough problem, and turn it down to low when you just need quick facts.
</Note>