Promptr
API that compresses LLM prompts to cut input token costs by roughly 30-40% while preserving output quality.
What it does
Promptr (promptr.it) is a REST API that automatically compresses prompt text before it is sent to an LLM, aiming to reduce input token counts while keeping the same output quality. It charges a flat per-token fee for the compression service and lets developers mark specific prompt sections as uncompressed or set custom compression ratios.
Core features
One-call REST API for prompt compression
Configurable compression ratio per prompt section
Tags to exclude sections from compression
Example SDKs/snippets for curl, Python, JS, C#
Cost-savings comparison shown per model
Best for
→Developers cutting LLM API costs on high-volume prompts
→Teams reusing the same long prompt many times
→Applications with strict token/cost budgets
Pricing
Compression
$1