# Claude Opus VS Claude Sonnet
**URL:** https://forums.realmacsoftware.com/t/claude-opus-vs-claude-sonnet/57721
**Category:** Elements AI
**Created:** [September 27, 2026, 3:50pm UTC](https://forums.realmacsoftware.com/t/claude-opus-vs-claude-sonnet/57721 "2026-09-27T15:50:47Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@MichaelDroste](https://forums.realmacsoftware.com/u/MichaelDroste)
#### Post date: [September 27, 2026, 3:50pm UTC](https://forums.realmacsoftware.com/t/claude-opus-vs-claude-sonnet/57721/1 "2026-09-27T15:50:47Z")
Signed up for the extra $100 free credit for Opus.
Opus is FASTER and makes fewer mistakes - maybe 2 small errors - that are quickly fixed…
Tried Sonnet yesterday - MISTAKE made huge errors - could not create the design plan 6 times - major sections untouched - and report came back - changed - and completed - was taking screenshots of existing results and the design template - then the machine would go off and work 15-20 minutes and return with no progress - I actually told the prompt to concentrate on the errors and problems around try number 4…
A complete waste of time…. Stopped after session 6 and deleted and tossed the whole debacle
Has anyone else run into this?
What model are you using?
Problems with results?
Just curious 🧐 to me - unusable…
---
### Author:  [@Flash](https://forums.realmacsoftware.com/u/Flash)
#### Post date: [September 27, 2026, 5:25pm UTC](https://forums.realmacsoftware.com/t/claude-opus-vs-claude-sonnet/57721/2 "2026-09-27T17:25:06Z")
> [@MichaelDroste](#):
>
> Has anyone else run into this?
Yes, For coding and project organization Sonnet is not the tool. Opus works but Fable, if you have access to it, excels. I have found for repetitive task, if you can get Opus to build the python tasks underneath Sonnet does a better job. Most of the time. Your mileage may vary.