Cortex is an open source platform for large-scale inference workloads.
- Supports deploying TensorFlow, PyTorch, sklearn and other models as realtime or batch APIs.
- Ensures high availability with availability zones and automated instance restarts.
- Runs inference on on-demand instances or spot instances with on-demand backups.
- Autoscales to handle production workloads with support for overprovisioning.
# cluster.yaml region: us-east-1 instance_type: g4dn.xlarge min_instances: 10 max_instances: 100 spot: true
$ cortex cluster up --config cluster.yaml
○しろまる configuring autoscaling ✓
○しろまる configuring networking ✓
○しろまる configuring logging ✓
cortex is ready!
- Package dependencies, code, and configuration for reproducible deployments.
- Configure compute, autoscaling, and networking for each API.
- Integrate with your data science platform or CI/CD system.
- Deploy custom Docker images or use the pre-built defaults.
- Test locally before deploying to a cluster.
class PythonPredictor: def __init__(self, config): from transformers import pipeline self.model = pipeline(task="text-generation") def predict(self, payload): return self.model(payload["text"])[0] requirements = ["tensorflow", "transformers"]
api_spec = { "name": "text-generator", "kind": "RealtimeAPI", "compute": { "gpu": 1, "mem": "8Gi" }, "autoscaling": { "min_replicas": 1, "max_replicas": 10 } }
- Scale to handle production workloads with request-based autoscaling.
- Stream performance metrics and logs to any monitoring tool.
- Serve many models efficiently with multi-model caching.
- Use rolling updates to update APIs without downtime.
- Configure traffic splitting for A/B testing.
import cortex cx = cortex.client("aws") cx.create_api(api_spec, predictor=PythonPredictor, requirements=requirements) # creating https://example.com/text-generator
$ curl https://example.com/text-generator -X POST -H "Content-Type: application/json" -d '{"text": "hello world"}'