By OpenAI
GPT-6 Astra Deep
The same model as GPT-6 Astra, thinking longer and giving longer answers
Price per message
8.5 PMCper message(KRW 340)
Shown as x8.5 in the chat.
With previous-conversation memory off: 7.5 PMC (KRW 300)
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.
Good for
- Problems that take several steps
- Summarizing and structuring long documents
- Describing what is in a photo
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
- OpenAI
- Released
- September 3, 2026
- Input included per message
- Up to 5,000 characters (extra input is charged)
- Knowledge cutoff
- April 2026
- Input types
- Text, Photos, Files
- PDF handling
- Reads extracted text only
- Web search
- Included in the per-message price
- Reasoning
- Always on
- Multiplier
- x8.5
Sources
- Provider model documentation (checked 2026-10-15)
Compare with other OpenAI models
Prices are the base price per message (memory on, no attachments or search).
| Model | Per message | Reasoning summary | Web search |
|---|---|---|---|
| GPT-6.1 Sol Deep | 2.5 PMC | Shown | Included |
| GPT-5.5 | 4.5 PMC | Shown | +2 PMC |
| GPT-5.6 Sol | 5.5 PMC | Shown | +2 PMC |
| GPT-6 Astra | 5.5 PMC | Shown | Included |
| GPT-6 Astra Deep (This model) | 8.5 PMC | Shown | Included |
| GPT-6 Astra Pro | 14.5 PMC | Shown | +2 PMC |
FAQ
- How much does one message cost?
- The base price is 8.5 PMC (KRW 340) per message, shown as x8.5 in the chat. With previous-conversation memory turned off, it is 7.5 PMC (KRW 300). 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.