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ChatGPT vs DocuWriter.ai

Official pricing (checked 2026-09-23, 2026-09-23) computed at the same usage levels. 1 USD = 1,375.64 KRW.

ChatGPT is cheaper more often
Get ChatGPTGet DocuWriter.ai

Monthly cost by usage

How many people will use itChatGPTDocuWriter.aiCheaper
Just me (1)$9.45
Go, ₩13,000
No planChatGPT
3 people (3)No planNo plan-
10 people (10)No planNo plan-

For your exact usage, use the AI writing calculator.

At a glance

  • Entry prices: ChatGPT Go at $9.45/mo (about ₩13,000), DocuWriter.ai Starter at $20/mo (about ₩27,500).
  • At just me usage, ChatGPT (Go, $9.45) is the only one with a public plan that covers it.
  • At 3 people usage (3 seats) neither has a public plan that covers it, or the unit cannot be converted.
  • At 10 people usage (10 seats) neither has a public plan that covers it, or the unit cannot be converted.
  • ChatGPT has a free plan (Free); DocuWriter.ai does not.

ChatGPT pricing

Tool page

OpenAI's conversational AI. A general-purpose tool that handles writing, summarizing, coding, and image generation in one place.

  • Free

    $0

    -

    $0/month. Unlimited GPT-5.6 Luna text chat (with abuse-prevention limits), GPT Instant context 27K

  • GoCheapest paid

    $9.45/mo

    In KRW
    ₩13,000
    Included / month
    1 seats

    Price listed in USD. May include ads, GPT Instant context 54K, reasoning context 256K

  • Plus

    $21.08/mo

    In KRW
    ₩29,000
    Included / month
    1 seats

    Price listed in USD. GPT-6 reasoning model, reasoning context 256K, includes scheduled tasks and custom GPTs

  • Pro

    $115.58/mo

    In KRW
    ₩159,000
    Included / month
    1 seats

    Price listed in USD, starting "From $100". 5x the usage of Plus, GPT-6 Astra, reasoning context 400K

1 USD = 1,375.64 KRW (2026-09-23). Checked on the official pricing page on 2026-09-23. Bold values are monthly-billing prices; taxes and payment fees excluded.

DocuWriter.ai pricing

Tool page

DocuWriter, Inc.가 만든 코드베이스 문서화 툴로, 저장소를 연결해 문서를 생성하고 Autopilot 기능으로 문서를 최신 상태로 유지한다.

  • StarterCheapest paid

    $20/mo

    In KRW
    ₩27,500
    Included / month
    50 credits

    월 50크레딧(AI 페이지 1개=1크레딧), 연간 결제 시 4개월 무료

  • Professional

    $49/mo

    In KRW
    ₩67,400
    Included / month
    200 credits

    월 AI 페이지 200개, 지식 공간 5개, 7일 무료 체험

  • Enterprise

    $129/mo

    In KRW
    ₩177,500
    Included / month
    500 credits

    월 AI 페이지 500개, 지식 공간 무제한, 팀 역할·무료 좌석

  • Unlimited

    $499/mo

    In KRW
    ₩686,400
    Included / month
    Unlimited

    AI 페이지 무제한, 전담 매니저

1 USD = 1,375.64 KRW (2026-09-23). Checked on the official pricing page on 2026-09-23. Bold values are monthly-billing prices; taxes and payment fees excluded.

FAQ

ChatGPT or DocuWriter.ai: which is cheaper?
At just me usage, ChatGPT (Go, $9.45) is the only one with a public plan that covers it. At 3 people usage (3 seats) neither has a public plan that covers it, or the unit cannot be converted. At 10 people usage (10 seats) neither has a public plan that covers it, or the unit cannot be converted.
Do ChatGPT and DocuWriter.ai have free plans?
ChatGPT has a free plan (Free); DocuWriter.ai does not.
What are the entry prices of ChatGPT and DocuWriter.ai?
Entry prices: ChatGPT Go at $9.45/mo (about ₩13,000), DocuWriter.ai Starter at $20/mo (about ₩27,500).
How this is calculated

How this is calculated

  1. 1KRW is converted at 1 USD = 1,375.64 KRW as at 2026-09-23. The rate is refreshed daily.
  2. 2Monthly cost is the monthly-billing price of the cheapest plan that covers the usage entered. Overage is added only where the official page states an overage rate; a plan whose allowance is exceeded with no stated overage is left out of the ranking.
  3. 3Credit-based tools are converted using the credits-per-unit figure printed on the official page. Tools whose credit cost varies by model, with no official conversion published, are excluded from the ranking and listed separately.
  4. 4The per-unit price is the plan's monthly price divided by its monthly allowance. Unlimited plans show none, as there is nothing to divide by.
  5. 5A 원고지 sheet is 200 characters; an A4 page is taken as 1,800 characters at 10pt with 160% line spacing.
  6. 6Prices are as published by the vendor. VAT, card issuers' foreign-transaction fees and the rate applied on a KRW settlement are excluded. Regional pricing and temporary promotions may not be reflected.
  7. 7Paying in dollars by card means your issuer adds its own exchange rate and a foreign-transaction fee, typically 1-2% of the amount. That figure depends on the issuer and the moment of payment, so Wolmma cannot know it and does not include it.

Disclaimer

Wolmma is an information site that collects prices from each tool's official pricing page. We may hold an affiliate relationship with a vendor, but we are neither the seller nor its agent.

We verify as carefully as we can, but a displayed price, allowance or conversion may differ from what you are actually charged, because of plan changes, regional policy, promotions or tax. Confirm the final amount on the official page before you pay.

These figures are reference information, not a recommendation or advice to buy. Wolmma accepts no liability for loss arising from a purchase or contract entered into on the basis of this information.

What your card is actually billed will differ from the figure shown, according to your issuer's exchange rate, its foreign-transaction fee and local tax. None of that is within our sight or control, and we accept no liability for it. Payment, refunds and plan changes are a contract between you and the vendor, to which the Company is not a party.

If a price is wrong, write to connect@aiyogeum.com. We check it, correct it, and record the correction in the change log.