How claude.ai was made 3x faster using Claude itself

Melvin Vivas · X post · 2026-09-24 · Open on X

Topics: LLMOps, Deployment & Monitoring, AI Dev Tools & Productivity · Level: intermediate

Summary

Melvin Vivas notices that Opus 5.5 feels faster in chat. He quotes a post saying claude.ai was made 3x faster in two weeks by using Claude to measure, debug and improve performance. The linked blog post is said to include the prompts and methods used.

Key points

• claude.ai was made 3x faster in two weeks.
• Claude itself was used to measure, debug and improve front-end and app performance.
• The blog post is said to include the prompts and methods used.
• Workflow: measure first, then debug the bottlenecks, then improve, with an LLM helping at each step.
• The creator notices that Opus 5.5 chat feels faster.

Resources mentioned

• How we made claude.ai faster (claude.dev blog) · article · claude.dev · free
  A blog post on how Claude was used to measure, debug and improve claude.ai performance, with prompts and methods included.
• Claude Opus 5.5 · tool · claude.ai · paid · open in a browser to verify · recommended by both Bashiri Smith & Melvin Vivas
  Anthropic's AI assistant, used throughout the guide to tailor resumes, add live roles to the tracker, match connections to target companies and find hiring managers.
  Also in: Generating a Repo Promo Video with a Claude Skill on Sonnet 5.5 vs Opus 5.5 (Melvin Vivas on X · notes), Comparing Coding Models on the Same Task in Devin iOS (Melvin Vivas on X · notes), Customizing Your Coding Setup with Pi Coding Agent Extensions (Melvin Vivas on X · notes), AI Engineer Roadmap Overview: From ML Foundations to RAG, Agents & Ops (Bashiri Smith on Facebook · notes) and 53 more

Try this

• Read the blog post and reuse its prompts to profile and speed up your own app.
• Use an LLM coding assistant to measure and fix performance bottlenecks in one of your web apps.