# AI21 vs Ray Serve — Fit & Features

Canonical: https://trutool.co/compare/ai21-vs-ray-serve
Author: Snehil (https://trutool.co/authors/snehil)

Compare AI21 and Ray Serve by use case, features, limitations, and evaluation questions.

## Compare fit, features, and limitations

### AI21
Language models and enterprise AI systems.
Best fit: Developers evaluating model APIs or inference infrastructure.
- Language models and enterprise AI systems
Before you choose: Compare latency, usage billing, rate limits, model licenses, and data handling for your workload.
Pricing: https://www.ai21.com/
- [Read AI21 profile](https://trutool.co/tools/ai21): Read AI21 profile

### Ray Serve
Build scalable model-serving applications with Ray.
Best fit: Machine learning teams building, serving, and operating model workloads.
- Model serving
- Python deployment
- Scalable inference
Before you choose: Benchmark your workload, verify model licenses and hardware requirements, and compare inference, hosting, and storage costs.
Pricing: https://docs.ray.io/en/latest/serve/index.html
- [Read Ray Serve profile](https://trutool.co/tools/ray-serve): Read Ray Serve profile