kitio.aiTinker vs Z.ai API
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Tinker starts at See pricing page and Z.ai API 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
- Managed distributed training
- LoRA fine-tuning
- Reinforcement learning
- Large MoE model support
- Downloadable weights
- GLM flagship and Flash models
- OpenAI-compatible API
- GLM Coding Plans
- Vision models
- Tool calling
| Feature | Tinker | Z.ai API |
|---|---|---|
| Best for | Training API from Thinking Machines for fine-tuning open models | Pay-per-token API and coding plans for Zhipu's GLM models |
| Category | Models & APIs | Models & APIs |
| Pricing model | Paid | Paid |
| Starting price | See pricing page | See pricing page |
| Free plan | No | No |
| Made by | Thinking Machines Lab | Z.ai (formerly Zhipu AI) |
| Based in | United States | China |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Tinker starts at See pricing page and Z.ai API 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
Tinker
- No GPU management
- Full control of training code
- Handles very large models
- Costlier than raw GPUs for small models
- Requires ML coding skills
- LoRA-focused
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
Which one should you choose?
Choose Tinker if you want:
- No GPU management
- Full control of training code
- Handles very large models
Watch out: costlier than raw gpus for small models.
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.
Tinker vs Z.ai API FAQ
What is the difference between Tinker and Z.ai API?
Tinker: Training API from Thinking Machines for fine-tuning open models. Z.ai API: Pay-per-token API and coding plans for Zhipu's GLM models. Both are models & apis tools.
Is Tinker or Z.ai API cheaper?
Tinker starts at See pricing page and Z.ai API starts at See pricing page. Check both pricing pages for current plans.
Do Tinker and Z.ai API have free plans?
Tinker: No. Z.ai API: No.
Who makes Tinker?
Tinker is made by Thinking Machines Lab, based in United States.
Who makes Z.ai API?
Z.ai API is made by Z.ai (formerly Zhipu AI), based in China.
Which should I choose, Tinker or Z.ai API?
Choose Tinker if you value no gpu management and full control of training code. Choose Z.ai API if you value low cost for strong coding models and fixed-price coding plans.