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KAI KeyboardAI vs ParagraphAI

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. KAI KeyboardAI starts at $4.99, ParagraphAI at $24.99. Both have a free tier.

KAI KeyboardAICustom iPhone keyboard that rewrites, replies and drafts with AI inside whatever app you are typing in.ParagraphAIKeyboard-level writing help for phones, browser and email replies

Side by side

FactKAI KeyboardAIParagraphAI
CategoryAI Writing AssistantsAI Writing Assistants
Pricing modelFreemiumFreemium
Starts at$4.99 month$24.99 month
Public APINoNo
PlatformsiOSWeb, iOS, Android, Chrome Ext
CompanyAkshat Giri LLCParagraphAI Inc.
Launched20232022
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

KAI KeyboardAI

A keyboard is the right shape for this problem — you rewrite the message where you are typing it instead of copying into a chat app and back. KAI does that, cheaply. The problem is age: the last update was November 2023, and an AI product frozen for that long is running on whatever model it shipped with.

Pros

  • Works system-wide as an iOS keyboard, in any app
  • Free to install with a one-off All Access unlock rather than a heavy subscription
  • Ships English, Russian and Ukrainian support
  • Named developer with a live App Store listing

Cons

  • No update since version 2.1 in November 2023
  • Billing period on the $4.99 and $39.99 purchases is not stated anywhere
  • Rated 18+, which blocks it for school-age users
  • Third-party keyboards need full access, meaning what you type can leave the device

ParagraphAI

The keyboard is the whole argument: if you write serious volume from a phone it beats copy-pasting into a chatbot. On desktop it is hard to justify $24.99 a month against Grammarly or a general LLM subscription that does more.

Pros

  • Native iOS and Android keyboard works inside any app, not just a web editor
  • 40+ languages with per-user fluency settings
  • Free tier is workable for light use at five uses per action per day
  • Annual billing halves the effective rate to $12.49 a month

Cons

  • $24.99 on monthly billing sits above Grammarly's consumer tier for a narrower feature set
  • 10,000-character input cap even on Pro, which rules out long documents
  • No developer API, and team controls only exist on the custom Enterprise plan
  • Marketing leans on unverifiable Fortune 500 adoption claims

Which one fits

Choose KAI KeyboardAI if you need

  • Rewriting messages in place on iPhone
  • Non-native English speakers drafting on mobile
  • People who want AI writing without a separate app

Choose ParagraphAI if you need

  • Heavy mobile emailers and messagers
  • Non-native English speakers wanting tone and formality control while typing
  • Sales and support reps replying from a phone between meetings
  • Anyone who needs inline translation mid-conversation

More comparisons

All KAI KeyboardAI alternatives →All ParagraphAI alternatives →Browse all AI Writing Assistants →