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AWS Inferentia/Trainium

AWS custom-designed machine learning chips for high-performance, cost-effective AI inference (Inferentia) and training (Trainium) workloads in the cloud.

Introduction

AWS Inferentia & Trainium

AWS Inferentia and Trainium are Amazon Web Services' custom-built machine learning accelerator chips designed to deliver high performance and cost efficiency for AI workloads.

AWS Inferentia

AWS Inferentia chips are purpose-built for high-performance machine learning inference. They are designed to deliver the lowest cost per inference in the cloud, making them ideal for deploying trained models at scale. Inferentia powers Amazon EC2 Inf1 and Inf2 instances, supporting popular frameworks like PyTorch and TensorFlow through the AWS Neuron SDK.

AWS Trainium

AWS Trainium is the second-generation custom chip designed specifically for deep learning training. It offers the best price-performance for training machine learning models in the cloud. Trainium powers Amazon EC2 Trn1 instances, enabling customers to train large language models (LLMs), computer vision models, and other complex ML workloads efficiently.

AWS Neuron SDK

Both chips are supported by the AWS Neuron SDK, which integrates with popular ML frameworks and allows developers to easily compile and deploy models on Inferentia and Trainium-based instances with minimal code changes.

Target Audience

Machine learning engineers, data scientists, AI researchers, and enterprises running large-scale ML training and inference workloads seeking cost-effective cloud AI infrastructure.

Key Features
  • Custom-designed ML chips optimized for inference (Inferentia) and training (Trainium)
  • Best price-performance for AI workloads in the cloud
  • Support for popular frameworks: PyTorch, TensorFlow, JAX via AWS Neuron SDK
  • High throughput with low latency for real-time inference
  • Scalable deployment through Amazon EC2 Inf1/Inf2 and Trn1 instances
  • Energy-efficient design for sustainable AI computing
  • Seamless integration with AWS SageMaker and other ML services
  • Support for large language models (LLMs) and generative AI workloads
Use Cases
  • Large language model (LLM) training and fine-tuning
  • Real-time inference for production ML applications
  • Computer vision model training and deployment
  • Natural language processing (NLP) workloads
  • Generative AI model development
  • Cost-optimized ML inference at scale
  • Deep learning research and experimentation
  • Recommendation systems and personalization engines
Pros
  • Significantly lower cost compared to GPU-based alternatives
  • Purpose-built for ML workloads with optimized performance
  • Deep integration with AWS ecosystem and services
  • Supports major ML frameworks with minimal code changes
  • Scalable from experimentation to production deployment
  • Energy-efficient design reduces operational costs
Cons
  • Limited to AWS cloud ecosystem
  • Requires learning AWS Neuron SDK for optimization
  • May have less community support compared to NVIDIA GPUs
  • Not suitable for all ML workloads - best for supported use cases
Pricing

Pay-as-you-go pricing through Amazon EC2 Inf1, Inf2, and Trn1 instances. Savings Plans available for committed usage. Pricing varies by instance type and region.

Latest News

Amazon ECS Managed Instances now supports AWS Trainium and AWS ...

Amazon ECS Managed Instances now supports AWS Trainium and AWS ...

8/4/2026

Amazon Elastic Container Service (Amazon ECS) Managed Instances now supports AWS Trainium and AWS Inferentia, purpose-built AI accelerators designed to deliver scalable performance and cost efficiency for training and inference across a broad range of generative AI workloads.

AI Accelerator - AWS Trainium Customers - AWS

AI Accelerator - AWS Trainium Customers - AWS

8/4/2026

At Hugging Face, we have been working hand in hand with the engineering teams at AWS building purpose-built AI chips since the first Inferentia1 instances became available. So today, we are incredibly excited about Trainium3, the next generation of AWS AI Chips that will power the most demanding AI ...

Amazon SageMaker Notebook Instances now support Trainium1 and ...

Amazon SageMaker Notebook Instances now support Trainium1 and ...

8/4/2026

We are pleased to announce general availability of Trainium1 and Inferentia2 based EC2 instances on SageMaker Notebook Instances. Amazon EC2 Trn1 instances, powered by AWS Trainium chips, and Inf2 instances, powered by AWS Inferentia chips, are purpose-built for high-performance deep learning traini...

AI Chip - Amazon Inferentia - AWS

AI Chip - Amazon Inferentia - AWS

8/4/2026

AWS Neuron SDK helps developers deploy models on the AWS Inferentia chips (and train them on AWS Trainium chips).

AWS Trainium | Artificial Intelligence

AWS Trainium | Artificial Intelligence

8/4/2026

This post focuses on how the QP model used draft centric speculative decoding (SD)—also called parallel decoding—with AWS AI chips to meet the demands of Prime Day. By combining parallel decoding with AWS Trainium and Inferentia chips, Rufus achieved two times faster response times, a 50% reduction ...

FAQ

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Pricing

Pricing Model: Usage-based

trn1.2xlarge On-Demand

EC2 Trn1 instance powered by 1 AWS Trainium chip for deep learning training.

$1.34/hour
hourly

trn1.2xlarge 1-Year Reserved

1-Year Reserved Instance for trn1.2xlarge.

$0.79/hour
hourly

trn1.2xlarge 3-Year Reserved

3-Year Reserved Instance for trn1.2xlarge.

$0.4744/hour
hourly

trn1.32xlarge On-Demand

EC2 Trn1 instance powered by 16 AWS Trainium chips for deep learning training.

$21.50/hour
hourly

trn1.32xlarge 1-Year Reserved

1-Year Reserved Instance for trn1.32xlarge.

$12.60/hour
hourly

trn1.32xlarge 3-Year Reserved

3-Year Reserved Instance for trn1.32xlarge.

$7.59/hour
hourly

trn1n.32xlarge On-Demand

EC2 Trn1n instance powered by 16 AWS Trainium chips with enhanced networking.

$24.78/hour
hourly

trn1n.32xlarge 1-Year Reserved

1-Year Reserved Instance for trn1n.32xlarge.

$14.52/hour
hourly

trn1n.32xlarge 3-Year Reserved

3-Year Reserved Instance for trn1n.32xlarge.

$8.59/hour
hourly

inf2.xlarge On-Demand

EC2 Inf2 instance powered by 1 AWS Inferentia2 chip for DL inference.

$0.76/hour
hourly

inf2.xlarge 1-Year Reserved

1-Year Reserved Instance for inf2.xlarge.

$0.45/hour
hourly

inf2.xlarge 3-Year Reserved

3-Year Reserved Instance for inf2.xlarge.

$0.30/hour
hourly

inf2.8xlarge On-Demand

EC2 Inf2 instance powered by 1 AWS Inferentia2 chip with more vCPUs.

$1.97/hour
hourly

inf2.8xlarge 1-Year Reserved

1-Year Reserved Instance for inf2.8xlarge.

$1.81/hour
hourly

inf2.8xlarge 3-Year Reserved

3-Year Reserved Instance for inf2.8xlarge.

$0.79/hour
hourly

inf2.24xlarge On-Demand

EC2 Inf2 instance powered by 6 AWS Inferentia2 chips.

$6.49/hour
hourly

inf2.24xlarge 1-Year Reserved

1-Year Reserved Instance for inf2.24xlarge.

$3.89/hour
hourly

inf2.24xlarge 3-Year Reserved

3-Year Reserved Instance for inf2.24xlarge.

$2.60/hour
hourly

inf2.48xlarge On-Demand

EC2 Inf2 instance powered by 12 AWS Inferentia2 chips.

$12.98/hour
hourly

inf2.48xlarge 1-Year Reserved

1-Year Reserved Instance for inf2.48xlarge.

$7.79/hour
hourly

inf2.48xlarge 3-Year Reserved

3-Year Reserved Instance for inf2.48xlarge.

$5.19/hour
hourly

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