GrammarlyGO vs Codeium (2026)
A head-to-head comparison to help you pick the right tool
Last updated: May 13, 2026
GrammarlyGO
GrammarlyGO is Grammarly's generative AI writing assistant that helps compose, rewrite and ideate directly in your existing workflow.
Codeium
Codeium is a free AI coding assistant offering code completion and chat, supporting 70+ languages and all major IDEs.
Pros
- ✓Works everywhere Grammarly works
- ✓Great for improving existing writing
- ✓Tone detection
- ✓Trusted brand
Cons
- ✗Requires Grammarly subscription
- ✗Less powerful for long-form creation
- ✗Better at editing than generating
Pros
- ✓Completely free for individuals
- ✓70+ languages supported
- ✓Fast completions
- ✓Good IDE support
Cons
- ✗Less powerful than Copilot on complex tasks
- ✗Smaller company backing
- ✗Enterprise features cost more
GrammarlyGO vs Codeium: Side by Side
| Factor | GrammarlyGO | Codeium |
|---|---|---|
| User Rating | N/A | N/A |
| Category | AI Writing Tools | AI Coding Assistants |
| Pricing Model | Included in Grammarly Premium from $12/month | Free for individuals, Teams from $12/month |
| Starting Price | Contact for pricing | Contact for pricing |
| Best For | Professionals who want AI writing help built into their existing Grammarly workflow | Individual developers wanting free AI code completion |
| Our Pick | — | — |
GrammarlyGO Features
- ✓AI text generation
- ✓Rewriting suggestions
- ✓Tone adjustment
- ✓Ideation prompts
- ✓Chrome extension
Codeium Features
- ✓Code completion
- ✓AI chat
- ✓70+ language support
- ✓IDE plugins
- ✓Codebase context
Pricing Comparison
Our Take
Choose GrammarlyGO if professionals who want ai writing help built into their existing grammarly workflow. Choose Codeium if individual developers wanting free ai code completion.
Also Consider
If neither GrammarlyGO nor Codeium is the right fit, Rytr is worth evaluating.
Rytr
Freelancers and solopreneurs on a tight budget
From $9/mo
Frequently Asked Questions
What is the difference between GrammarlyGO and Codeium?
GrammarlyGO is best for professionals who want ai writing help built into their existing grammarly workflow. Codeium is best for individual developers wanting free ai code completion.
Which is better, GrammarlyGO or Codeium?
Choose GrammarlyGO if professionals who want ai writing help built into their existing grammarly workflow. Choose Codeium if individual developers wanting free ai code completion.
How much does GrammarlyGO cost?
Visit GrammarlyGO website for current pricing.
How much does Codeium cost?
Visit Codeium website for current pricing.
Who should use GrammarlyGO?
Professionals who want AI writing help built into their existing Grammarly workflow
Who should use Codeium?
Individual developers wanting free AI code completion