Opus 4.5 vs Synthesia
A detailed comparison to help you choose the right AI tool for your needs.
Our Pick
Claude Opus 4.5
Claude Opus 4.5 edges out Synthesia with superior overall performance and features that make it the better choice for most users.
Try Opus 4.5Feature Comparison
Feature
Opus 4.5
Synthesia
Ratings
Overall Rating
4.9
4.6
Coding
5.0
-
Writing
4.8
-
Reasoning
4.9
-
Speed
4.2
4.5
Value
4.5
4.4
Pricing
Monthly Price
$20
$22
Free Tier
Input (per 1M tokens)
$5
-
Output (per 1M tokens)
$25
-
Features
Context Window
200K
-
Vision/Images
Audio
Video
Code Generation
AI Agents
Claude Opus 4.5
Pros
- Best coding model available (80.9% SWE-bench)
- Excellent for autonomous agents
- Effort parameter allows speed/quality tradeoff
- 76% fewer tokens than Sonnet at same quality
- Strong at long-horizon tasks
Cons
- More expensive than Sonnet
- Slower on simple tasks
- Requires Claude Pro/Max subscription for full access
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 Opus 4.5 if you need:
Professional developers, complex codebases, autonomous agents
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.