Codeium vs GrammarlyGO (2026)
A head-to-head comparison to help you pick the right tool
Codeium
Codeium is a free AI coding assistant offering code completion and chat, supporting 70+ languages and all major IDEs.
Get Pricing →GrammarlyGO
GrammarlyGO is Grammarly's generative AI writing assistant that helps compose, rewrite and ideate directly in your existing workflow.
Get Pricing →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
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
Our Take
Choose Codeium if individual developers wanting free ai code completion. Choose GrammarlyGO if professionals who want ai writing help built into their existing grammarly workflow.