By Anthropic
Claude Sonnet 5
A Claude model suited to coding and multi-step work, with web search included in the price
Price per message
2.5 PMCper message(KRW 100)
Shown as x2.5 in the chat.
With previous-conversation memory off: 1.75 PMC (KRW 70)
Anything extra, such as input beyond the included length, attachments or paid web search, is added up and shown on the send button before you send.
1 PMC is based on KRW 40, and a payment fee is added when you buy PMC (for example, 100 PMC costs KRW 4,476).
Features
- Shows a reasoning summary by default
- Web search included
- Photo input
- PDF and document input
Try it
Start from an example
- Write a JavaScript function that returns the number of days between two dates
- Draft an outline for a product launch plan
- Make a table of things to compare before buying a laptop
Nothing is sent when you click. You review the message in the chat and are charged only when you send it yourself. You can look around without signing in; you sign in when you send.
Sign up and verify your email to get 7.5 bonus PMC, enough for 3 messages with this model at its base price (bonus valid for 90 days).
Good for
- Writing and fixing code, and tracking down errors
- Structured long writing such as reports and proposals
- Looking things up, then comparing and organizing them (web search included)
Good to know
- PDFs are read as extracted text only, so tables, charts and scanned images are not reflected in answers.
- Web search is included in the per-message price and cannot be turned off. The model decides whether to search for each question.
- It always reasons before answering, so even short questions can take a while to start.
Specifications
- Provider
- Anthropic
- Released
- June 30, 2026
- Input included per message
- Up to 4,000 characters (extra input is charged)
- Knowledge cutoff
- January 2026
- Input types
- Text, Photos, Files
- PDF handling
- Reads extracted text only
- Web search
- Included in the per-message price
- Reasoning
- Always on
- Multiplier
- x2.5
Sources
- Provider model documentation (checked 2026-10-15)
Compare with other Anthropic models
Prices are the base price per message (memory on, no attachments or search).
| Model | Per message | Reasoning summary | Web search |
|---|---|---|---|
| Claude Sonnet 5.5 | 1.75 PMC | Shown | +1.25 PMC |
| Claude Sonnet 5 (This model) | 2.5 PMC | Shown | Included |
| Claude Opus 4.5 | 3 PMC | No | +2 PMC |
| Claude Opus 4.6 | 3 PMC | No | +2 PMC |
| Claude Opus 4.7 | 3.5 PMC | No | +2 PMC |
| Claude Opus 4.8 | 3.5 PMC | No | +2 PMC |
FAQ
- How much does one message cost?
- The base price is 2.5 PMC (KRW 100) per message, shown as x2.5 in the chat. With previous-conversation memory turned off, it is 1.75 PMC (KRW 70). Anything extra, such as input beyond the included length, attachments or paid web search, is added up and shown on the send button before you send.
- Do I need a monthly subscription?
- No. There is no monthly subscription: you top up PMC and only what you use is deducted each time you send. 1 PMC is based on KRW 40, and a payment fee is added when you buy PMC (for example, 100 PMC costs KRW 4,476).
- Can it search the web?
- Yes. Web search is built in, with no separate charge for searching.
- Can I upload photos or files?
- Yes. You can send photos as well as PDFs and document files. If a file costs extra, the amount is shown on the send button before you send.
- Can I see a reasoning summary?
- Yes. A short summary of what it worked through before answering is shown by default, at no extra charge.
- Do I need to turn web search on?
- No. This model looks at web search results when it needs them, and the cost of searching is already part of the price per message.