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Gemini vs Grammarly AI: Complete Comparison 2026

Choosing between Gemini and Grammarly AI? We compare both tools across features, pricing, pros and cons to help you decide which is the better fit in 2026.

Gemini9.2

Google DeepMind · Chatbots & LLMs, Coding, Writing

Gemini is Google's natively multimodal model family, deeply integrated across Search, Workspace, Android and the Pixel line. Its standout feature is an enormous context window of up to one to two million tokens, ideal for analysing long videos, codebases and document sets. Gemini blends Google's real-time knowledge with strong reasoning and is available free in many products.

Grammarly AI8.3

Grammarly · Writing

Grammarly AI extends the popular writing assistant with generative features for drafting, rewriting and adjusting tone anywhere you type. Its GrammarlyGO and editor work across the web, documents and email with real-time grammar, clarity and style suggestions. Grammarly's strength is ubiquitous, context-aware writing help rather than long-form generation.

Key differences at a glance

  • •Gemini scores higher overall (9.2 vs 8.3).
  • •Both start at $20/mo (Gemini) and $12/mo (Grammarly AI).
  • •Gemini leans on massive context window.
  • •Grammarly AI leans on works everywhere you write.

Side-by-side comparison

FeatureGeminiGoogle DeepMindGrammarly AIGrammarly
Quality score9.2 / 108.3 / 10
Starting price$20/mo$12/mo
Free tierYes — Free tier availableYes — Free tier available
API input price$1.5 / 1M tokens—
API output price$9 / 1M tokens—
SpeedFastFast
Context window1M-2M tokens—
CategoriesChatbots & LLMs, Coding, WritingWriting
Key features
  • Up to 2M token context window
  • Deep Google Workspace integration
  • Native video and audio understanding
  • Real-time Google Search grounding
  • Real-time grammar and clarity checks
  • Generative drafting and rewriting
  • Tone and style adjustment
  • Works across apps and browsers
Pros
  • + Massive context window
  • + Tight integration with Google ecosystem
  • + Generous free access
  • + Works everywhere you write
  • + Excellent editing and tone tools
  • + Solid free tier
Cons
  • − Quality can be inconsistent on edge cases
  • − Privacy concerns for some users
  • − Limited long-form generation
  • − Best features behind paywall

Gemini

Choose Gemini if you want massive context window and a free tier to start.

Grammarly AI

Choose Grammarly AI if you want works everywhere you write and a free tier to start.

Pricing comparison

Gemini
$20/mo
API: $1.5 in / $9 out per 1M tokens
Grammarly AI
$12/mo
查看即時 API 價格數據 → llmprice.app

The verdict

Overall, Gemini edges ahead with a quality score of 9.2 versus 8.3 for Grammarly AI. Choose Gemini if you want massive context window. That said, Grammarly AI is the better pick when works everywhere you write matters most — so the right answer depends on your priorities and budget.

Try Gemini →Try Grammarly AI →

Frequently asked questions

Q. Which is better, Gemini or Grammarly AI?

On our scoring, Gemini edges ahead (9.2/10), but the right pick depends on your priorities and budget — see the breakdown above.

Q. Is Gemini or Grammarly AI cheaper?

Gemini starts at $20/mo and Grammarly AI at $12/mo. Check current rates before committing.

Q. Can I use Gemini and Grammarly AI together?

Yes — many teams use more than one AI tool, picking Gemini for some tasks and Grammarly AI for others where it's stronger.