# I left Claude for months. Opus 5.5 is why I'm back

DevFeed: [I left Claude for months. Opus 5.5 is why I'm back](<https://devfeed.tech/articles/i-left-claude-for-months-opus-5-5-is-why-i-m-back-58168.md>)

Original publisher: [Read original article](<https://www.lennysnewsletter.com/p/i-left-claude-for-months-opus-55>)

Author: Claire Vo

Published: 2026-09-22T19:06:40Z

Content type: opinion

Language: en

Sources: [Lenny's Newsletter](<https://devfeed.tech/sources/lenny-s-newsletter.md>)

Topics: [Claude](<https://devfeed.tech/topics/claude.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [anthropic](<https://devfeed.tech/topics/anthropic.md>), [Front end](<https://devfeed.tech/topics/frontend.md>), [codex](<https://devfeed.tech/topics/codex.md>), [Model Context Protocol](<https://devfeed.tech/topics/model-context-protocol.md>), [SVG](<https://devfeed.tech/topics/svg.md>)

Tags: [agentic](<https://devfeed.tech/tags/agentic.md>), [ai](<https://devfeed.tech/tags/ai.md>), [anthropic](<https://devfeed.tech/tags/anthropic.md>), [claude](<https://devfeed.tech/tags/claude.md>), [codex](<https://devfeed.tech/tags/codex.md>), [frontend](<https://devfeed.tech/tags/frontend.md>), [mcp](<https://devfeed.tech/tags/mcp.md>), [opus-5](<https://devfeed.tech/tags/opus-5.md>), [svg](<https://devfeed.tech/tags/svg.md>)

## AI overview

A firsthand video review compares Claude Opus 5.5 with Codex after a week of testing across agentic tasks, frontend prototyping, SVG work, writing, voice, and video editing. It examines cost, speed, usability, safety behavior, and where each model fits in the creator's workflow.

## Source excerpt

Watch now (25 mins) | 🎙 I abandoned Claude for months because it drove me insane. Opus 5.5 changed that, and I'll show you exactly where it's earning a spot back in my stack for frontend, SVGs, and agentic tasks