By Anthropic
Claude Sonnet 5.5
The next version of Claude Sonnet 5, 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: 2 PMC (KRW 80)
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
- Help me sort this week of tasks by priority
- Explain interest rates so a beginner can follow
- Make this sentence sound more natural: The meeting has been pushed to next week
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).
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 4.5 | 1.5 PMC | No | +1 PMC |
| Claude Sonnet 4.6 | 1.75 PMC | No | +1 PMC |
| Claude Sonnet 5 | 2.5 PMC | Shown | Included |
| Claude Sonnet 5.5 (This model) | 2.5 PMC | Shown | Included |
| Claude Opus 4.5 | 3 PMC | No | +1 PMC |
| Claude Opus 4.6 | 3 PMC | No | +1 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 2 PMC (KRW 80). 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.