What The Diff vs Amazon CodeWhisperer: Which is Better in 2026?
Choosing between What The Diff and Amazon CodeWhisperer comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: Amazon CodeWhisperer is our overall pick for AI coding workflows. Pick What The Diff if you need code review.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
What The Diff
AI-powered assistant for streamlined code reviews and enhanced team communication.
Best for you if:
- • You need code review features specifically
- • Automatically generates pull request descriptions using AI.
- • Provides summarized notifications and changelogs for stakeholders.
Amazon CodeWhisperer
AI coding companion from AWS for faster development
Best for you if:
- • You need AI coding features specifically
- • Amazon's AI coding assistant
- • Security scans find vulnerabilities
| At a Glance |  What The Diff |  Amazon CodeWhisperer |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Code Review | AI Coding |
Rating | - | 4.2/5 |
Choose What The Diff or Amazon CodeWhisperer?
Choose What The Diff if
AI-powered assistant for streamlined code reviews and enhanced team communication.
- Saves time by automating PR description writing.
- Improves communication with non-technical stakeholders through simplified summaries.
- Accelerates code review process with inline AI refactoring.
- Your work is code review-shaped, not AI coding-shaped
Choose Amazon CodeWhisperer if
AI coding companion from AWS for faster development
- AWS integration
- Free tier available
- Security scanning
- Your work is AI coding-shaped, not code review-shaped
| Feature | What The Diff | Amazon CodeWhisperer |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | No ratings yet | ★4.2/5 35 reviews |
| Categories | Code ReviewDocumentation | AI CodingDeveloper Tools |
In-Depth Analysis
What The Diff
AI-powered assistant for streamlined code reviews and enhanced team communication.
Strengths
- +Saves time by automating PR description writing.
- +Improves communication with non-technical stakeholders through simplified summaries.
- +Accelerates code review process with inline AI refactoring.
- +Supports nearly all programming languages.
- +Does not store user code or train AI models on private code.
Weaknesses
- -Requires full access to GitHub/GitLab code due to API limitations.
- -Unused tokens do not roll over to the next month.
- -Token-based usage might require monitoring for larger teams.
Key features
Amazon CodeWhisperer
AI coding companion from AWS for faster development
Strengths
- +AWS integration
- +Free tier available
- +Security scanning
- +Multiple languages
- +IDE support
Weaknesses
- -Less capable than Copilot
- -AWS focused
- -Suggestions basic
- -Privacy concerns
- -Falling behind
Key features
Pricing: What The Diff vs Amazon CodeWhisperer
| Plan | What The Diff | Amazon CodeWhisperer |
|---|---|---|
| Tier 1 | $0 Free | Free Individual |
| Tier 2 | $19/month Pro – 200k | $19 user/month Professional |
Pricing verified from each vendor's public pricing page. Compare in detail on What The Diff pricing and Amazon CodeWhisperer pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: What The Diff
Want the highest-rated option?
Amazon CodeWhisperer is rated 4.2/5. What The Diff has no ratings yet.
Go with: Amazon CodeWhisperer
Value user reviews?
What The Diff: no ratings yet. Amazon CodeWhisperer: 35 reviews (4.2/5).
Go with: Amazon CodeWhisperer
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
What The Diff is a code review tool. Amazon CodeWhisperer is in AI coding. Pick the category that matches your needs.
How important are ratings?
Amazon CodeWhisperer is rated 4.2/5; What The Diff has no ratings yet.
Key Takeaways
Amazon CodeWhisperer
- Free tier available
- Our pick for this comparison
What The Diff
- Better fit for code review
The Bottom Line
Amazon CodeWhisperer is our pick.
Frequently Asked Questions
Is What The Diff or Amazon CodeWhisperer better?
Amazon CodeWhisperer is rated in our evaluation. Both are freemium.
What are What The Diff and Amazon CodeWhisperer used for?
What The Diff: AI-powered assistant for streamlined code reviews and enhanced team communication.. Amazon CodeWhisperer: AI coding companion from AWS for faster development.
What does What The Diff cost vs Amazon CodeWhisperer?
What The Diff is freemium (free tier + paid plans). Amazon CodeWhisperer is freemium (free tier + paid plans). Visit their websites for detailed pricing.