That poster isn't comparing models, he's comparing Claude Code to Cline (two agentic coding tools), both using Claude Sonnet 4. I was pretty much in the same boat all year as well; using Cline heavily at work ($1k+/month token spend) and I was sold on it over Claude Code, although I've just recently made the switch, as Claude Code has a VSCode extension now. Whichever agentic tooling you use (Cline, CC, Cursor, Aider, etc.) is still a matter of debate, but the underlying model (Sonnet/Opus) seems to be unanimously agreed on as being in a league of its own, and has been since 3.5 released last year.
That poster isn't comparing models, he's comparing Claude Code to Cline (two agentic coding tools), both using Claude Sonnet 4. I was pretty much in the same boat all year as well; using Cline heavily at work ($1k+/month token spend) and I was sold on it over Claude Code, although I've just recently made the switch, as Claude Code has a VSCode extension now. Whichever agentic tooling you use (Cline, CC, Cursor, Aider, etc.) is still a matter of debate, but the underlying model (Sonnet/Opus) seems to be unanimously agreed on as being in a league of its own, and has been since 3.5 released last year.