---
title: "Aleksei Aleinikov (@a-aleinikov) | Hashnode"
description: "Senior Cloud Security & Platform Engineer | GCP Ambassador. Read the latest articles by Aleksei Aleinikov on Hashnode."
url: "https://hashnode.com/@a-aleinikov"
---

@a-aleinikov

# Aleksei Aleinikov

@a-aleinikov · Thessaloniki, Greece · Joined May 2026

Senior Cloud Security & Platform Engineer | GCP Ambassador

[Website](https://www.alekseialeinikov.com/)

### [Claude Haiku 5.5 vs Sonnet 5.5 vs Opus 5.5: 20× Cheaper Than Sonnet — and a 100K-Token Price Cliff](https://alekseialeinikov.hashnode.dev/claude-haiku-5-5-vs-sonnet-5-5-vs-opus-5-5-20-cheaper-than-sonnet-and-a-100k-token-price-cliff?utm_source=hashnode&utm_medium=feed)

Haiku 5.5 costs 1/20 of Sonnet 5.5 and scores 72.4% on OSWorld. Benchmarks, the 100K-token price cliff and real monthly costs.

19 min read · [alekseialeinikov.hashnode.dev](https://alekseialeinikov.hashnode.dev/claude-haiku-5-5-vs-sonnet-5-5-vs-opus-5-5-20-cheaper-than-sonnet-and-a-100k-token-price-cliff?utm_source=hashnode&utm_medium=feed)

[Oct 8](https://hashnode.com/posts/claude-haiku-5-5-vs-sonnet-5-5-vs-opus-5-5-20-cheaper-than-sonnet-and-a-100k-token-price-cliff/6ac72117fba8267b72194503)