kitio.aiZ.ai API vs Upstage
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Z.ai API starts at See pricing page and Upstage starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- GLM flagship and Flash models
- OpenAI-compatible API
- GLM Coding Plans
- Vision models
- Tool calling
- Solar Pro and Mini LLMs
- Document Parse
- Information Extract
- Upstage Studio agents
- On-premise deployment
- Cloud marketplace listings
| Feature | Z.ai API | Upstage |
|---|---|---|
| Best for | Pay-per-token API and coding plans for Zhipu's GLM models | Solar LLMs and document AI for parsing and extracting business data |
| Category | Models & APIs | Models & APIs |
| Pricing model | Paid | Paid |
| Starting price | See pricing page | See pricing page |
| Free plan | No | No |
| Made by | Z.ai (formerly Zhipu AI) | Upstage |
| Based in | China | South Korea |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Z.ai API starts at See pricing page and Upstage starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Z.ai API
- Low cost for strong coding models
- Fixed-price coding plans
- Open weights released
- Less known outside developer circles
- Data processed in China
- Docs can lag releases
Upstage
- Strong parsing for messy documents
- Several deployment options
- Compact model for cheap agent workloads
- Pricing is spread across several pages
- Aimed at enterprise buyers
- On-prem and marketplace deals go through sales
Which one should you choose?
Choose Z.ai API if you want:
- Low cost for strong coding models
- Fixed-price coding plans
- Open weights released
Watch out: less known outside developer circles.
Choose Upstage if you want:
- Strong parsing for messy documents
- Several deployment options
- Compact model for cheap agent workloads
Watch out: pricing is spread across several pages.
Z.ai API vs Upstage FAQ
What is the difference between Z.ai API and Upstage?
Z.ai API: Pay-per-token API and coding plans for Zhipu's GLM models. Upstage: Solar LLMs and document AI for parsing and extracting business data. Both are models & apis tools.
Is Z.ai API or Upstage cheaper?
Z.ai API starts at See pricing page and Upstage starts at See pricing page. Check both pricing pages for current plans.
Do Z.ai API and Upstage have free plans?
Z.ai API: No. Upstage: No.
Who makes Z.ai API?
Z.ai API is made by Z.ai (formerly Zhipu AI), based in China.
Who makes Upstage?
Upstage is made by Upstage, based in South Korea.
Which should I choose, Z.ai API or Upstage?
Choose Z.ai API if you value low cost for strong coding models and fixed-price coding plans. Choose Upstage if you value strong parsing for messy documents and several deployment options.