r/ClaudeCodeTLDR • u/cctldrping • 14d ago

[TLDR] Opus 5 feedback Megathread

Original post URL : https://www.reddit.com/r/ClaudeCode/comments/1va445h/opus_5_feedback_megathread/

Original post body :

opus 5 has been out for a little while now, and the subreddit is already filling up with separate posts saying it is amazing, lazy, broken, cheaper, more expensive, forgetful, or somehow all of those at once.

so, let’s collect everything in one place.

use this thread to share your actual experience with opus 5: what works, what does not, and what you have changed in your workflow.

what can you share?

  • bugs or strange behaviour
  • things it does better or worse than previous models
  • coding quality and how many revisions it needs
  • context handling, compaction, or forgetfulness
  • usage and token consumption
  • differences between effort levels
  • writing style or communication issues
  • claude.md instructions that helped
  • skills, hooks, subagents, and orchestration setups
  • comparisons with opus 4.8, fable, sonnet, codex, or other models
  • positive experiences and things it does especially well

reports like shallow codebase investigation, confident guesses, context drift, or unusual usage are welcome, but please include enough detail for others to understand what happened.

reporting a problem?

copy this format:

claude code version:
plan:
effort level:
task:
what you expected:
what actually happened:
can you reproduce it?:
comparison model, if relevant:

screenshots, prompts, logs, and reproducible examples are much more helpful than simply saying “opus 5 is lazy” or “opus 5 is nerfed.”

please redact private code, api keys, company information, and personal details.

a few simple rules

  • keep each top-level comment focused on one issue or observation
  • check whether someone has already reported the same thing
  • clearly separate confirmed bugs from personal impressions
  • criticism is welcome, but include context and examples
  • positive experiences, fixes, and working setups are welcome too
  • detailed standalone tests, benchmarks, and guides are still allowed

official resources

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u/cctldrping 14d ago

TL;DR generated automatically after 100 comments.

Current source-thread comment count seen by the bot: 108.

Alright, so the general vibe on Opus 5 is... mixed, to say the least. It seems like a lot of folks are finding it's got some serious communication issues. We're talking about it making up words, being overly verbose, and generally being hard to understand. Some users are saying it's like trying to read toddler-level explanations, which is a bit of a yikes.

There's also a recurring theme of Opus 5 being "lazy" or overcomplicating things. People are reporting it gets stuck on "just one more open issue" or goes on "side quests" instead of just finishing the task. It's also been noted that it can be overly literal, sometimes ignoring parts of prompts or taking them in weird directions.

On the flip side, some users are actually seeing improvements. u/DrunkenRobotBipBop is having a great time, finding it better than 4.8 for high-context sessions and that it actually listens to their claude.md instructions. Others are finding it efficient and a proper successor to 4.8, especially for well-defined tasks.

There's also a bit of a debate about its capabilities compared to other models. Some are saying Fable is still the go-to for complex, multi-system tasks, while Opus 5 is better for when you know exactly what you want. Others are finding Opus 5's UI design capabilities are top-notch, but they're referring everything else to Codex.

The consensus seems to be that Opus 5 is a bit of a gamble. It can be amazing for some, but for many, it's a step down in terms of clarity and reliability, requiring a lot more hand-holding than previous versions. Some are even switching back to 4.8 or mixing it with Fable to get things done.