
Postio.co.uk
Ideal postcodes
Fetchify
Smarty
Data8 UK
ZIP Code API
Data8 UK PredictiveAddress
The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

PDF.ai
ChatGPT
ChatDOC
NotebookLM
Humata AI
AskYourPDF
ChatDox
Chat with any PDF! Join millions of students, researchers and professionals to instantly answer questions and understand research with AI

Which is more popular?
Based on our record, ChatPDF seems to be more popular. It has been mentioned 17 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | postaldatapi.com | chatpdf.com |
| Pricing | — | |
| Company | Startup from the United States · 1 - 9 employees · 2026 | Startup from Germany · 1 - 9 employees · 2023 |
| Listed in |
In their own words, as submitted to SaaSHub.


PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate — $0.000028 per query with no tiers or subscriptions. What you get back: Up to 18 metadata fields per postal code — city, state/region, coordinates,...
For Researchers Explore scientific papers, academic articles, and books to get the information you need for your research. For Students Study for exams, get help with homework, and answer multiple choice questions faster than your classmates. For Professionals Navigate legal contracts, financial...
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
More videos
ChatPDF | MindBlowing 🤯 AI Tool To Chat With Any PDF | Powered By ChatGPT API
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using PostalDataPI and ChatPDF. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking PostalDataPI since Apr 2026.
I think my app still can't beat chatpdf.com. :(. Source: over 3 years ago
Quoting directly from the FAQ popup on chatpdf.com:. Source: over 3 years ago
Try using chatpdf.com I don't really use documents that much. Source: over 3 years ago
When comparing PostalDataPI and ChatPDF, you can also consider the following products.

Fast UK address, email & phone validation APIs for developers. Official Royal Mail PAF data. Pay as you go, 100 free lookups.
Compare Postio.co.uk to PostalDataPI or ChatPDF:


We help businesses improve UX and data quality with a cutting edge address validation service.
Compare Ideal postcodes to PostalDataPI or ChatPDF:

ChatGPT is a powerful, open-source language model.
Compare ChatGPT to PostalDataPI or ChatPDF:

Fetchify delivers fast, accurate address, email, phone and bank validation tools that help businesses capture clean, verified customer data, reduce failed deliveries and improve checkout experiences worldwide.
Compare Fetchify to PostalDataPI or ChatPDF:
