GPT-5.1 vs Perplexity
A detailed comparison to help you choose the right AI tool for your needs.
Our Pick
GPT-5.1 Instant
GPT-5.1 Instant edges out Perplexity AI with superior overall performance and features that make it the better choice for most users.
Try GPT-5.1Feature Comparison
Feature
GPT-5.1
Perplexity
Ratings
Overall Rating
4.7
4.6
Coding
4.5
3.5
Writing
4.6
4.2
Reasoning
4.8
4.4
Speed
4.8
4.8
Value
4.6
4.7
Pricing
Monthly Price
$20
$20
Free Tier
Input (per 1M tokens)
$2.5
-
Output (per 1M tokens)
$10
-
Features
Context Window
128K
128K
Vision/Images
Audio
Video
Code Generation
AI Agents
GPT-5.1 Instant
Pros
- Fast responses with adaptive reasoning
- New personalization presets
- Strong math and coding improvements
- Multimodal (text, image, audio)
- Free tier available
Cons
- Coding not as strong as Claude Opus
- Can be verbose
- Writing style less natural than Claude
Perplexity AI
Pros
- Real-time web access
- Cites all sources
- Great for research
- Fast responses
- Generous free tier
Cons
- Not as capable for coding
- Writing not as polished
- Limited context for complex tasks
Choose GPT-5.1 if you need:
General assistant, math problems, quick coding help
Choose Perplexity if you need:
Research, fact-checking, current events
Ready to get started?
Both tools offer free tiers or trials. Try them out and see which one works best for your workflow.