ChatGPT vs Grammarly : Comparatif Complet (2026)
ChatGPT et Grammarly sont tous deux populaires — mais avec des points forts différents. Voici ce que disent les données.
⚡ Quick comparison
| Feature | ChatGPT | Grammarly |
|---|---|---|
| Rating | ★★★★☆ 8.8/10 🏆 Winner | ★★★★☆ 8.1/10 |
| Monthly price | $20 | $12 |
| API (input / output per 1M) | $5 / $15 | — |
| Context window | 128K tokens | — |
| Free tier | ✅ Yes | ✅ Yes |
| Provider | OpenAI | Grammarly Inc. |
| Best for | General tasks, Content writing | Non-native English writers, Professional email writers |
🔀 Cross-category comparison
ChatGPT (Large Language Models) and Grammarly (AI Writing Tools) serve different primary use cases, but both may appear in the same AI stack.
- Use ChatGPT for: General tasks, Content writing, Customer-facing chatbots
- Use Grammarly for: Non-native English writers, Professional email writers, Anyone needing grammar checks
- They are complementary, not direct substitutes — many teams use both.
✅ ChatGPT — Pros
- Huge plugin ecosystem
- Best brand recognition
- Strong multimodal (vision)
- Largest user community
❌ ChatGPT — Cons
- Context window smaller than Claude
- Hallucinations on complex facts
- API more expensive than competitors
✅ Grammarly — Pros
- Works everywhere (browser extension)
- Excellent grammar correction
- Tone detection
- Free tier useful
❌ Grammarly — Cons
- Not a content generator
- AI rewrites can feel generic
- Privacy concerns for sensitive docs
🏁 Verdict
D'après une analyse indépendante de benchmarks publics et de données tarifaires, ChatGPT obtient un meilleur score global (8.8/10 vs 8.1/10). Cependant, Grammarly gagne sur certains scénarios spécifiques.
- Choisissez ChatGPT si: General tasks, Content writing, Customer-facing chatbots
- Choisissez Grammarly si: Non-native English writers, Professional email writers, Anyone needing grammar checks
❓ Questions fréquentes
ChatGPT est-il meilleur que Grammarly ?
ChatGPT scores higher overall (8.8/10 vs 8.1/10). The best choice depends on your use case — see the verdict above.
Lequel est moins cher : ChatGPT ou Grammarly ?
Grammarly at $12/month vs $20/month for ChatGPT.
Pour quoi ChatGPT est-il le meilleur ?
General tasks, Content writing, Customer-facing chatbots.
Pour quoi Grammarly est-il le meilleur ?
Non-native English writers, Professional email writers, Anyone needing grammar checks.
ChatGPT ou Grammarly ont-ils une offre gratuite ?
ChatGPT has a free tier. Grammarly has a free tier.
ChatGPT →Grammarly →
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