checkstack.ai

checkstack.ai is a live English-language website hosted on Amazon.com, Inc. (AS16509) in the United States, served by Vercel. cl0q first saw it on 2026-08-27 and last crawled it on 2026-08-27. It resolves to 64.29.17.65 and has mail (MX) records set up. Its favicon is fingerprinted by SHA-256, so you can find every other site that serves the same icon.

How the site describes itself:

Checkstack | Your AI Model Costs 78× More Than It Should

Checkstack is an LLM evaluation engine for AI developers. Shadow-test live agents via CLI proxy or batch-evaluate CSV datasets. Compare 164+ models on accuracy, latency & exact per-call cost. Zero API markup.