Best Free AI Keyboard: Gboard, SwiftKey, Grammarly Compared
The best free AI keyboard depends on what you need. Gboard is the best free overall choice for most Android users. SwiftKey is the best free alternative for multilingual typing. Grammarly Keyboard has the best free writing checks. Apple Dictation is the easiest free iPhone voice option. ChatGPT is useful for free drafting, but it is a companion app, not a keyboard.
Quick Answer
Best Free Picks by Use Case
Gboard
Best for Android users who want swipe typing, voice input, multilingual support, and Google features without a subscription.
Microsoft SwiftKey
Best for multilingual typing, Microsoft users, and people who prefer SwiftKey's prediction style over Gboard.
Grammarly Keyboard
Best for basic spelling, grammar, and tone help. Advanced rewriting and deeper suggestions usually require a paid plan.
Apple Dictation
Best if you want built-in voice input on iPhone with no third-party keyboard install. It is transcription, not an AI writing keyboard.
ChatGPT mobile
Best for drafting, rewriting, and brainstorming longer messages. It is a companion app, not a keyboard replacement.
Free AI Keyboard Comparison
Free does not always mean unlimited. Some tools are fully free; others have useful free tiers with paid upgrades.
| Tool | Free? | Best for | Main limit |
|---|---|---|---|
| Gboard | Yes | Android typing, voice input, translation | Gemini features vary by device, region, language, and rollout. |
| SwiftKey | Yes | Multilingual typing and Microsoft ecosystem users | AI feature availability depends on platform and account. |
| Grammarly Keyboard | Free tier | Spelling, grammar, tone, and clarity checks | Advanced rewrites, deeper style suggestions, and higher limits may require Premium. |
| Apple Dictation | Yes | Built-in iPhone voice-to-text | No AI formatting, tone rewrite, or cross-app task execution. |
| ChatGPT mobile | Free tier | Drafting, rewriting, research, and voice conversations | Separate app, usage limits, and not an inline keyboard. |
| Wispr Flow | Free tier | AI-formatted voice dictation | Best dictation polish may require paid usage limits; not primarily a writing checker. |
Gboard
YesBest for: Android typing, voice input, translation
Limit: Gemini features vary by device, region, language, and rollout.
SwiftKey
YesBest for: Multilingual typing and Microsoft ecosystem users
Limit: AI feature availability depends on platform and account.
Grammarly Keyboard
Free tierBest for: Spelling, grammar, tone, and clarity checks
Limit: Advanced rewrites, deeper style suggestions, and higher limits may require Premium.
Apple Dictation
YesBest for: Built-in iPhone voice-to-text
Limit: No AI formatting, tone rewrite, or cross-app task execution.
ChatGPT mobile
Free tierBest for: Drafting, rewriting, research, and voice conversations
Limit: Separate app, usage limits, and not an inline keyboard.
Wispr Flow
Free tierBest for: AI-formatted voice dictation
Limit: Best dictation polish may require paid usage limits; not primarily a writing checker.
Free AI Keyboard Privacy Notes
Keyboard apps can see what you type in ordinary text fields. AI features may send text, voice, or usage data to cloud services. Use reputable apps, review Full Access or network permissions, and keep sensitive text out of cloud AI features unless you trust the provider's policy.