# Amazon Bedrock adds optional prompt shortening to Advanced Prompt Optimization

> The new setting can cut prompt length by up to 30% while keeping or improving evaluation scores, lowering token costs.

Oossa · 2026-10-20 · https://oossa.com/en/amazon-bedrock-adds-optional-prompt-shortening-to-advanced-prompt-optimization

Amazon Bedrock’s Advanced Prompt Optimization now includes an optional prompt‑shortening mode. When enabled, the service tries to produce a shorter prompt that scores at least as well as the original on your custom evaluation. If the shortened version is longer or scores lower, the original prompt is kept. The feature works with any model on Bedrock and any evaluation method, and it shows a compression ratio in the job results.

## The facts

- Feature announced on 2026-10-20
- A compression ratio of 0.7 means the optimized prompt uses 30% fewer tokens

## Why it matters

Developers can lower input‑token costs and latency for large‑scale applications without sacrificing prompt quality.

## Sources & references

1. [Amazon Bedrock Advanced Prompt Optimization now supports prompt shortening](https://aws.amazon.com/about-aws/whats-new/2026/10/bedrock-prompt-optimization-shortening/) – AWS, 2026-10-20

Last updated: 2026-10-20