Sonnet 4.5 vs Synthesia
A detailed comparison to help you choose the right AI tool for your needs.
Our Pick
Claude Sonnet 4.5
Claude Sonnet 4.5 edges out Synthesia with superior overall performance and features that make it the better choice for most users.
Try Sonnet 4.5Feature Comparison
Feature
Sonnet 4.5
Synthesia
Ratings
Overall Rating
4.8
4.6
Coding
4.7
-
Writing
4.9
-
Reasoning
4.7
-
Speed
4.6
4.5
Value
4.9
4.4
Pricing
Monthly Price
$20
$22
Free Tier
Input (per 1M tokens)
$3
-
Output (per 1M tokens)
$15
-
Features
Context Window
200K
-
Vision/Images
Audio
Video
Code Generation
AI Agents
Claude Sonnet 4.5
Pros
- Best value for money
- Excellent writing quality
- Fast response times
- Strong coding abilities
- Free tier available
Cons
- Not as powerful as Opus for complex tasks
- Usage limits on free tier
Synthesia
Pros
- Realistic AI avatars
- 140+ languages and voices
- No video production skills needed
- Fast turnaround
- Enterprise-ready with SOC 2 compliance
Cons
- Avatar-based only (no text-to-video)
- Limited creative flexibility
- Higher cost for heavy usage
- Avatars may feel uncanny to some viewers
Choose Sonnet 4.5 if you need:
Daily coding tasks, writing, general use
Choose Synthesia if you need:
Training videos, corporate communications, localization
Ready to get started?
Both tools offer free tiers or trials. Try them out and see which one works best for your workflow.