OpenAI o1
AI that can do general-purpose complex reasoning
Z.ai
Official Playground for High-Performance GLM Models
Updated February 2026
| OpenAI o1 | Z.ai | |
|---|---|---|
| Rating | 5.0★ | 4.8★ |
| Reviews | 11 | 4 |
| Pros | 1 | 6 |
| FactScore™ | 54 | 33.2 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in OpenAI o1 — Pros
Ai featuresBoth tools — Pros
—Only in Z.ai — Pros
Strong coding capabilities Open source Agentic tasks High-quality PPT generation Free MIT-licensedOnly in OpenAI o1 — Cons
Difficulty canceling subscription Limited conditional logic complexityBoth tools — Cons
—Only in Z.ai — Cons
Error occurrenceDetails
| OpenAI o1 | Z.ai | |
|---|---|---|
| Categories | LLMs | LLMs, AI Infrastructure Tools |
| Platforms | Web | Web |
| Became Popular | September 13, 2024 | April 25, 2025 |
| Website | openai.com | z.ai |
Who Should Pick Which?
Choose OpenAI o1 if...
- Ai features
Choose Z.ai if...
- Strong coding capabilities
- Open source
- Agentic tasks
With a FactScore™ of 54 vs 33.2, OpenAI o1 leads in community reception. OpenAI o1 uniquely offers Ai features, while Z.ai stands out for Strong coding capabilities and Open source.
What Users Say
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.
Z.ai
One of the models power our agent
GLM 4.6 is incredible for coding. it performs similarly to claude sonnet 4.0 but at much lower cost
Open access and the MIT license are a huge plus, especially for those looking for an alternative to commercial APIs. I really liked how smoothly the dual-mode inference and code generation are impl...
Related Comparisons
Frequently Asked Questions
Which is better, OpenAI o1 or Z.ai?
Based on FactScore™, OpenAI o1 leads with a score of 54 vs 33.2. OpenAI o1 has a higher rating of 5.0★ compared to 4.8★.
What are the pros of OpenAI o1 compared to Z.ai?
OpenAI o1 uniquely offers: Ai features.
What are the pros of Z.ai compared to OpenAI o1?
Z.ai uniquely offers: Strong coding capabilities, Open source, Agentic tasks, High-quality PPT generation, Free.
Is OpenAI o1 better rated than Z.ai?
OpenAI o1 is rated 5.0★ from 11 reviews. Z.ai is rated 4.8★ from 4 reviews.
What is the FactScore™ of OpenAI o1 and Z.ai?
FactScore™ weighs rating and review volume together. OpenAI o1 scores 54 and Z.ai scores 33.2.
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