Here are the questions people most often ask when starting with Claude. (Pricing, policies, and features may change — verify important details on official pages.)
🟢 Current lineup (September 2026): Claude Opus 5.5 / Claude Sonnet 5 / Claude Haiku 4.5 (higher tier: Claude Fable 5.1). · model notice · Fable subscription
Fable 5 and 5.1 subscription (updated September 7, 2026): Claude Fable 5.1, released September 1, 2026, is the current Fable model and Fable 5 is now legacy. Plan terms are the same for both — Max and Team Premium plans include Fable at up to 50% of the weekly usage limit; Pro and Team Standard use usage credits (
- Common questions, organized by pricing, models, privacy, tech, and support.
- Answers are based on Anthropic's official info plus Korean-market context.
- Covers the essentials: free to start, Korean supported, payment available.
- Each topic links out to a detailed article.
Is Claude free?
Yes, there's a free plan. Sign up at claude.ai with an email, Google, or Apple account and you can start right away without payment info. The free plan isn't a stripped-down demo — it's genuinely usable, including general chat, file uploads, Projects, Artifacts, Memory, and web search. That said, it has usage limits, and the top-tier Opus model is not available on the free plan. To use more, there's Pro ($20/month in the US) or Max.
→ More: Claude free plan: limits and how it differs from Pro.
Do I need a credit card to sign up?
No. A free account requires no payment info. There's no anonymous or guest mode, so you do need to create an account.
How is it different from ChatGPT?
Both are conversational AI assistants, but they're made by different companies (Claude = Anthropic, ChatGPT = OpenAI). Their specific strengths, models, pricing, and features keep changing over time, so it's hard to declare one strictly "better." We recommend trying both on the tasks you actually do — writing, coding, document analysis — and comparing. One characteristic of Claude is that it takes text and image input and produces text output (it has no native image, audio, or video generation).
→ More: Claude vs ChatGPT.
Does it work well in Korean (and other languages)?
Yes, Claude can converse in many languages, including Korean. Ask in a given language and it answers in that language. As with any AI language model, there can be factual errors with proper nouns, very recent information, or specialized fields, so cross-check important details against sources.
→ More: how to reduce hallucinations.
Which model should I choose?
There are three current general models (as of September 2026), plus the premium Fable 5.1 tier included on Max and Team Premium plans.
- Opus 5 — the most capable; complex reasoning and coding
- Sonnet 5 — balanced performance and cost; the default model on Free and Pro plans
- Haiku 4.5 — fastest and cheapest; simple, high-volume tasks
If you're new, you don't need to agonize over the choice — the default model is enough for most tasks.
→ More: Model comparison: Haiku, Sonnet, Opus.
Are my conversations used for AI training?
Consumer plans (Free, Pro, Max) have a data-use toggle in settings, such as "Help Improve Claude," that you can turn on or off yourself. Check and manage its current state in your privacy settings. API and commercial use generally differ from consumer plans (e.g., not used for training).
Data and privacy policies can change and are described differently across sources. For the most accurate information, check the Privacy section of your Claude settings and Anthropic's official privacy policy directly.
Are my conversations safe?
Conversations are saved to your account and removed from your chat history when you delete them. Still, it's safest not to enter sensitive personal or confidential information (passwords, card numbers, others' personal data) into any AI service. For details like retention periods and deletion handling, check the privacy settings above and the official docs.
Can Claude create images?
Claude is a model that produces text output, so it doesn't directly generate photo-like images. However, it can read and understand images (analyzing uploaded images), and it can create visual outputs in forms like code, SVG, and diagrams (Mermaid) via Artifacts.
How can a developer call it from code?
Use the API. Get a key at platform.claude.com and make calls; this is billed by token usage, separate from a Pro/Max subscription. See the "Getting Started with the Claude API" guide for details.
→ More: Claude SDK guide, and which model string to use / how to pin a version in model IDs and versioning.
Learn more: for when chats are used for training and how long data is kept, see the privacy and data settings guide.
This FAQ is for general guidance only. Pricing, policies, and features may change per Anthropic's policies, and usingclaude.com is not an official Anthropic site. Verify the latest information on official pages (claude.ai, anthropic.com) before making important decisions.
Dive deeper into individual questions
- Is Claude free? Free, Pro, Max, Team & Enterprise pricing
- Does Claude support Korean? How to use it well
- Claude vs ChatGPT: what's the difference?
- Can you buy Anthropic (Claude) stock? IPO status
- What is Anthropic? Who owns the company behind Claude
- Who founded Anthropic? Dario and Daniela Amodei
Related articles
- Is Claude Free? Free, Pro, Max, Team & Enterprise Pricing Explained
- Does Claude Support Korean? How to Use It and Get Better Results
- Claude vs ChatGPT: What's the Difference? Key Points Explained
- Does Claude Use My Conversations for Training? Privacy FAQ
- Claude File Upload FAQ: Formats, 500MB/20-file Limits, PDF Handling
- Who Makes Claude? Anthropic, the Company Behind Claude
- Claude Guest Pass Explained: How to Get, Send, and Use It
- Why Do Claude's Pricing and Usage Limits Seem to Change Without Warning?
- Does Claude Fable 5.1 Usage Count Toward Your Regular Weekly Limit?