Lex
AI-powered word processor, to help you write faster
OpenAI o1
AI that can do general-purpose complex reasoning
Updated February 2026
| Lex | OpenAI o1 | |
|---|---|---|
| Rating | 4.5★ | 5.0★ |
| Reviews | 13 | 11 |
| Pros | 10 | 1 |
| FactScore™ | 51.1 | 54 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Lex — Pros
Easy to use User-friendly interface Writing assistance Focus on writing Improves writing skills Active feedback/roadmap updates AI autocomplete Built-in search Headline generation Minimalistic designBoth tools — Pros
—Only in OpenAI o1 — Pros
Ai featuresOnly in Lex — Cons
Confusing design choices Lack of guidance Limited editing capabilities No automatic exportBoth tools — Cons
—Only in OpenAI o1 — Cons
Difficulty canceling subscription Limited conditional logic complexityDetails
| Lex | OpenAI o1 | |
|---|---|---|
| Categories | LLMs, AI Chatbots, Writing assistants | LLMs |
| Platforms | Web | Web |
| Became Popular | October 17, 2022 | September 13, 2024 |
| Website | lex.page | openai.com |
Who Should Pick Which?
Choose Lex if...
- Easy to use
- User-friendly interface
- Writing assistance
Choose OpenAI o1 if...
- Ai features
With a FactScore™ of 51.1 vs 54, OpenAI o1 leads in community reception. Lex uniquely offers Easy to use and User-friendly interface, while OpenAI o1 stands out for Ai features.
What Users Say
Lex
I mainly use this to get me started on written content, and the +++ command is super intuitive. The AI assistant is a tad unintuitive. It can't yet make changes to your writing, or export your doc ...
Wow! I'm testing Lex this morning. I copy-pasted the first two paragraphs of a post I wrote to see what Lex would do… To say that I'm impressed is an understatement 🤯 I haven't been excited like t...
In my opinion, Lex.page is a powerful tool that can help writers streamline their writing process and produce high-quality content. Lex provides a clean and user-friendly interface for writing and ...
OpenAI o1
We power our AI chart generation through o1 to get high quality visualizations for any data question. o1 is able to deeply understand any data source, including complex custom databases.
ChatGPT Pro includes o1 pro mode, a version of o1 that uses more compute to think harder and provide even better answers to the hardest problems.
OpenAI's o1 model, with its advanced reasoning and planning capabilities, significantly enhances our decision-making process.
Related Comparisons
Frequently Asked Questions
Which is better, Lex or OpenAI o1?
Based on FactScore™, OpenAI o1 leads with a score of 54 vs 51.1. OpenAI o1 has a higher rating of 5.0★ compared to 4.5★.
What are the pros of Lex compared to OpenAI o1?
Lex uniquely offers: Easy to use, User-friendly interface, Writing assistance, Focus on writing, Improves writing skills.
What are the pros of OpenAI o1 compared to Lex?
OpenAI o1 uniquely offers: Ai features.
Is Lex better rated than OpenAI o1?
Lex is rated 4.5★ from 13 reviews. OpenAI o1 is rated 5.0★ from 11 reviews.
What is the FactScore™ of Lex and OpenAI o1?
FactScore™ weighs rating and review volume together. Lex scores 51.1 and OpenAI o1 scores 54.
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