How to Use Claude: A Step-by-Step Guide (2026)

Claude is Anthropic's AI assistant, known for natural writing, careful reasoning, and handling long documents. Learning how to use Claude well means knowing which model to choose, how to structure a prompt, and which features fit your task, whether that is drafting an email, analyzing a report, or researching a topic.

This guide walks you through each step, from your first chat to advanced prompting, Projects, and Research. You will also see how to use Claude on Chat Smith, an AI chatbot that brings Claude, GPT, Gemini, Grok, and DeepSeek together in one app for less than a single Claude subscription.

Claude is a family of large language models built by Anthropic. It can write and edit text, answer questions, analyze files and images, and work through multi-step problems. For a full breakdown of every version, see our guide to Claude models.

Claude comes in three model tiers, each balancing speed and capability differently:

Most people use Sonnet for daily work and switch to Haiku or Opus only when speed or depth matters more.

You can use Claude in Anthropic's own apps, through the API, or inside a multi-model platform. Each option suits a different kind of user.

Getting started takes a minute: sign in, open a new chat, choose a model, and type your request. You can also attach files, screenshots, or photos to give Claude more context.

Start with the lightest model that can do the job. On Chat Smith, Claude Haiku 4.5 handles quick questions and short edits, while Claude Sonnet 5 is the better choice for writing, analysis, and longer conversations.

Move up a tier when the answer feels shallow, skips steps, or loses track of a long document. Heavier models take longer to reply, so save them for work where accuracy matters more than speed.

Claude responds best to prompts that read like a brief to a smart colleague. A reliable structure has three parts:

Example prompt:

I manage a five-person customer support team. Draft a one-page policy for weekend on-call shifts that feels fair to everyone. Use bullet points and a friendly tone.

Treat Claude's first reply as a draft. It remembers the whole conversation, so short follow-ups are enough to shape the result:

• “Make it shorter and more direct.”
• “Add a real example under each point.”
• “What would a skeptical reader object to here?”

If a chat runs long or drifts off topic, start a new one with a short summary of what you need. A fresh context usually gives cleaner answers than piling on corrections.

Claude is careful, but it can still get details wrong. Double-check anything you plan to publish or act on, especially:

• Numbers, dates, and prices
• Names, quotes, and sources
• Legal, medical, and financial details

Asking Claude to explain its reasoning, or to flag anything it is unsure about, makes errors much easier to spot.

A few techniques get noticeably better results from Claude, especially on longer or more complex tasks.

When a prompt mixes instructions, background, and source material, wrap each part in simple tags. Claude recognizes this structure well, so it keeps your instructions separate from the content it is working on.

Example prompt:

<instructions>Summarize the article below for a busy executive in five bullet points.</instructions> <article>[paste the article here]</article>

If you need a specific style or format, paste a short sample and ask Claude to match it. One good example often works better than a whole paragraph of description.

Example prompt:

Here is a product description I like: [paste sample]. Write three new descriptions for the items below in the same tone and length.

Claude can read very long inputs, from full reports to entire contracts. Instead of summarizing a document yourself, upload or paste the whole thing and ask targeted questions about it.

Put the document first and your question at the end. With long inputs, this order tends to produce more accurate and focused answers.

Beyond chat, Anthropic's Claude apps include several tools that make Claude more useful for ongoing work.

Projects are workspaces for recurring tasks. Upload your brand guide, style rules, or background documents once, and every chat in that project can use them. Memory works across chats, so Claude can recall preferences such as your role or preferred writing style without you repeating them.

Web search lets Claude check current information during a chat. Research goes further: Claude plans a series of searches, reads many sources, and returns a structured report with citations. It suits market research, product comparisons, and literature reviews, where depth matters more than speed.

You can upload PDFs, spreadsheets, and images and ask Claude to summarize, compare, or pull data from them. When Claude writes something substantial, such as a document or a small interactive tool, it can open it as an Artifact you can edit and download. For quick document summaries, Chat Smith's AI PDF summarizer does the job in one step.

Most people use Claude for a handful of recurring tasks. Here is where it fits best:

Claude is especially good at natural-sounding prose. Use it to outline articles, rewrite drafts in a new tone, or tighten long text. For messages you send often, an AI email writer saves you from retyping the same instructions.

Example prompt:

Rewrite this email so it sounds confident but polite, and cut it to under 120 words: [paste email]

Ask Claude to explain a topic at your level, quiz you, or walk through a problem one step at a time. For math and science exercises, an AI homework solver is a quick way to check your working.

Example prompt:

Explain how compound interest works using a simple example, then give me three practice questions with answers.

Anthropic's apps are the most direct way to use Claude, but costs add up if you also rely on other AI tools. As of October 2026, Claude Pro costs $20 per month ($17 per month billed annually), and Max costs $100 or $200 per month. Adding ChatGPT Plus brings the total to about $40 per month for two separate apps.

Having several models side by side also changes how you work. You can draft with Claude, ask GPT-5.6 Sol to challenge the reasoning, get a quick second take from Gemini 3.5 Flash, and turn the final idea into a visual with Nano Banana Pro, all in the same app.

Knowing how to use Claude well comes down to a few habits: pick the right model, write prompts like a clear brief, give it the full context, and refine with follow-ups. With Chat Smith, you can use Claude alongside the other leading AI models on web, Android, and iOS, without paying for multiple subscriptions.