Grammarly vs Superhuman
Which Productivity AI tool is better in 2026?
Grammarly
AI writing assistant for individuals and teams.
Superhuman
The fastest email experience ever made, with AI triage and reply.
Side-by-side
| Grammarly | Superhuman | |
|---|---|---|
| Tagline | AI writing assistant for individuals and teams. | The fastest email experience ever made, with AI triage and reply. |
| Founded | 2009 | 2014 |
| HQ | San Francisco, US | US |
| Employees | 1001-5000 | 51-200 |
| Total funding | $200M | Undisclosed |
| Latest round | Series D · Nov 2024 | — |
| Valuation | $13B | — |
| Cheapest paid plan | Pro (Annual) · $12/mo | Starter · $25/mo |
| Free plan | ✓ Free | ✗ |
| Free trial | ✓ | ✗ |
| Top tier price | Pro (Monthly) · $30/mo | Business · $33/mo |
| Pricing summary | 6 published plans | 3 published plans |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Grammarly and Superhuman.
| Capability | Grammarly | Superhuman |
|---|---|---|
| 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 ($200M vs Undisclosed)
- Offers a free plan
- Offers a free trial
- Lower starting price ($12/mo)
🔵 Strengths of Superhuman
- Higher Neuron score (72 vs 64)
- Newer company (2014)
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 $200M, 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 Superhuman — which is better?
It depends on your priority. Grammarly has raised more capital and is the more established option; Superhuman has broader feature depth. See the side-by-side table above.
Is Grammarly cheaper than Superhuman?
Yes — Grammarly's cheapest paid plan is Pro (Annual) · $12/mo, while Superhuman's is Starter · $25/mo.
Do Grammarly and Superhuman offer free plans?
Grammarly: Yes, has a free plan. Superhuman: Paid only.
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