Amazon Web Services (Trainium)
Trainium chips for training and inference on AWS
Ranked #5 in Best AI Chip Companies.
Amazon Web Services designs its own AI chips through Annapurna Labs, including Trainium for training and inference. Project Rainier, an AWS cluster of about 500,000 Trainium2 chips used by Anthropic, came online in October 2025, and AWS launched Trainium3 in December 2025.
At a glance
| Price from | Pay per use on AWS |
| Best for | Teams training and serving models on AWS at lower cost |
From Amazon Web Services (Trainium)'s own website.
What stands out
- Lower cost than GPU instances, by AWS's figures
- Anthropic as anchor customer
Worth knowing
- Only available inside AWS
- Smaller software ecosystem than CUDA
How it ranks
Amazon Web Services (Trainium) is ranked 5th of 10 in Best AI Chip Companies (Lister Score 92.2).
#5 in Best AI Chip Companies · Lister Score 92.2
AWS activated Project Rainier with about 500,000 Trainium2 chips in October 2025..
| Rank | Best AI Chip Companies | Score |
|---|---|---|
| 1 | Nvidia | 97.4 |
| 2 | AMD | 95.9 |
| 3 | Google (TPU) | 94.7 |
| 4 | Broadcom | 93.5 |
| 5 | Amazon Web Services (Trainium) | 92.2 |
| 6 | Huawei (Ascend) | 90.8 |
| 7 | Cerebras | 89.5 |
| 8 | Intel | 88.1 |
| 9 | Qualcomm | 86.6 |
| 10 | Tenstorrent | 85.2 |
Frequently asked questions
How does Amazon Web Services (Trainium) rank on Lister?
Amazon Web Services (Trainium) is ranked 5th of 10 in Best AI Chip Companies (Lister Score 92.2).
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