Why hackers moved from Claude Opus to Claude Sonnet 5
1 hacker described this switch in public comments. Their words, with links to the originals.
What hackers said about the move
“I switched from Opus models to sonnet 5 and haven’t noticed any drop in quality on large repos.”mulhoon, 2026-07-24original comment ↗
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Claude Opus vs Claude Sonnet 5
| Claude Opus | Claude Sonnet 5 | |
|---|---|---|
| Hackers who recommend | 5 | 2 |
| Hackers who criticize | 2 | 0 |
| Moved away from it | 6 | 0 |
| Moved to it | 1 | 2 |
Counts are distinct hackers in the sampled comments, not market share.
Criticism of Claude Opus
“My personal experience has been Opus is unusable on design work it's so terrible.”nijave, 2026-09-26original comment ↗
“This seems a worsening that seems to have started at Opus 4.8.”ghoul2, 2026-09-02original comment ↗
Praise for Claude Sonnet 5
“Anyway, Sonnet is still doing a good job.”pmontra, 2026-08-13original comment ↗