Grammarly vs Spellbook
Which Productivity AI tool is better in 2026?
Grammarly
AI writing assistant for individuals and teams.
Spellbook
AI contract review for lawyers
Side-by-side
Grammarly leads on both fronts — more capital raised ($1.2B) and a lower entry price than Spellbook.
| Metric | Grammarly | Spellbook |
|---|---|---|
| Taglinei | AI writing assistant for individuals and teams. | AI contract review for lawyers |
| Foundedi | 2009🏆 | 2021 |
| HQi | San Francisco, US | Toronto, CA |
| Employeesi | 1001-5000 | 20-50🏆 |
| Neuron scorei | 84🏆 | 55 |
| Total fundingi | $1.2B🏆 | $90M |
| Latest roundi | Growth · May 2025 | Debt · Mar 2026 |
| Valuationi | $13B🏆 | — |
| Cheapest paid plani | Pro (Annual) · $12/mo🏆 | — |
| Free plani | ✓ Free | ✓ 7-day free trial |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pro (Monthly) · $30/mo | Enterprise · Contact sales |
| Pricing summaryi | 6 published plans | 2 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Grammarly and Spellbook.
| Capability | Grammarly | Spellbook |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✓ | ✗ |
| SDK languages | 1 (JavaScript) | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✓ |
| Active deal | ✓ | ✗ |
🟢 Strengths of Grammarly
- Has raised more capital ($1.2B vs $90M)
- Higher Neuron score (84 vs 55)
- Offers a free plan
- Lower starting price ($12/mo)
🔵 Strengths of Spellbook
- Newer company (2021)
- Verified profile
Which should you choose?
Choose Grammarly if price matters most — it starts at Free · From $12/mo, which is friendlier for teams watching burn. Both AI Productivity tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Grammarly if you want the most established option — it has raised $1.2B, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
💸 Deals
7-day free trial of Grammarly Premium
Try Grammarly Premium free for 7 days — AI writing assistant used by 30M+ daily.
Frequently asked questions
Grammarly vs Spellbook — which is better?
It depends on your priority. Grammarly has raised more capital and is the more established option; Spellbook has broader feature depth. See the side-by-side table above.
Is Grammarly cheaper than Spellbook?
Yes — Grammarly's cheapest paid plan is Pro (Annual) · $12/mo, while Spellbook's is Free.
Do Grammarly and Spellbook offer free plans?
Grammarly: Yes, has a free plan. Spellbook: Yes, has a free plan.
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