Grammarly vs Vertex AI: Pricing Comparison 2026
Side-by-side pricing comparison of Grammarly and Vertex AI. See all plans, features, and costs at a glance.
Bottom line: Grammarly starts at Custom pricing and Vertex AI starts at $2/mo. Compare all 15 pricing tiers side by side.
Last updated: March 16, 2026
Grammarly vs Vertex AI: Quick Pricing Facts
| Feature | Grammarly | Vertex AI |
|---|---|---|
| Starting Price | Custom pricing | $2/mo |
| Number of Plans | 3 | 12 |
| Free Tier | Yes | No |
| Pricing Model | freemium | usage-based |
| Annual Discount | N/A | N/A |
Grammarly and Vertex AI are both priced at Custom pricing, making them equally accessible AI & ML tools. Together they offer 15 pricing plans with 0 features compared, so the best choice comes down to which features match your needs.
Grammarly stands out with a free plan for getting started. Grammarly uses freemium pricing while Vertex AI uses usage-based pricing, which may affect your total cost at scale.
Review the detailed tier-by-tier comparison above to see exactly which features are included at each price point and find the best fit for your AI & ML needs.
| Pricing Plans |  Grammarly Try it free |  Vertex AI Try it free |
|---|---|---|
| Tier 1 | FreePopular $0/monthCheapest | cached Custom pricing |
| Tier 2 | ProPopular Custom pricing | $14 per 1,000 search queries $14/monthCheapest |
| Tier 3 | EnterprisePopular Custom pricing | $14 per 1,000 queries $14/monthCheapest |
| Tier 4 | — | Gemini 2.0 Flash $2/monthCheapest |
| Tier 5 | — | $45 per 1,000 grounded prompts $45/monthCheapest |
| Tier 6 | — | $25 per 1,000 grounded prompts $25/monthCheapest |
| Tier 7 | — | Gemini Flash Custom pricing |
| Tier 8 | — | $35 per 1,000 grounded prompts $35/monthCheapest |
| Tier 9 | — | Model Custom pricing |
| Tier 10 | — | Open Source Model Custom pricing |
| Tier 11 | — | Duration Custom pricing |
| Tier 12 | — | $10 per 1000 searches $10/monthCheapest |
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What Reviewers Say
Grammarly
Grammarly offers a free plan.
Based on pricing data only. Review the full comparison below for your specific needs.
Best value: Grammarly
Try Grammarly freeWhich Should You Choose?
Choose Grammarly if:
- •You need a free plan with core features—Grammarly offers no-cost access with no credit card required
- •You prioritize Grammarly's user experience and interface over price (both tools are similarly priced)
- •Grammarly's 3-tier freemium structure gives clearer cost visibility for budget planning
Choose Vertex AI if:
- •You need 12 pricing tiers for flexible team sizing—more options mean less overpaying for features you don't need
- •You prioritize Vertex AI's user experience and interface over price (both tools are similarly priced)
- •Vertex AI's usage-based pricing lets you match exact team size without tier gaps
Grammarly offers a free plan [1], eliminating the cost barrier for evaluation, while Vertex AI requires paid subscription from the start. This gives Grammarly a significant advantage for teams with budget constraints or extended trial periods. Once you outgrow Grammarly's free tier, upgrading to a paid plan at approximately Free provides substantial additional functionality. Compare this pricing path against Vertex AI's tiering starting at $2/mo to assess total cost of ownership over 12 months. Grammarly's 3 tiers provide flexibility at different budgets, while Vertex AI's 12 tiers structure may force you into higher-cost plans than necessary for your use case. If evaluation cost matters to your decision, Grammarly is the obvious starting point with zero financial commitment. Use the free tier to validate core functionality before committing to paid plans from either tool.
Frequently Asked Questions: Grammarly vs Vertex AI
How many pricing plans does Grammarly have vs Vertex AI?
Does Grammarly or Vertex AI offer a free plan?
What is the most popular Grammarly plan?
Does Grammarly or Vertex AI offer custom enterprise pricing?
What pricing models do Grammarly and Vertex AI use?
How do Grammarly and Vertex AI compare for AI & ML?
Sources
- Grammarly Official Pricing— Vendor pricing page
- Vertex AI Official Pricing— Vendor pricing page
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