modelsentiment
← Leaderboard

Claude Opus 5

Anthropic · Claude Opus series · released 24 Jul 2026 · as of 13 Nov, 20:12 UTC

35
02550751000 = all negative · 50 = neutral · 100 = all positive

Negative

Reddit reads Claude Opus 5 as negative: an index of 35 from 122 opinions in 88 threads last 7 days, its whole 95% interval, 30–41, below neutral. That is 24th of the 25 models with a full read. 6 points warmer than the previous 7 days, within noise.

The share praising is lowest for follow-through, 7% of 14 opinions. On benchmarks: 13th of 128 on Arena text, 2nd of 56 on the agentic index.

Per day

The last 14 UTC days. Each day's own index at its value, with its 95% interval.

  1. Sat 31 Oct7
    7 opinions, no index below 10
  2. Sun 1 Nov14
  3. Mon 2 Nov11
  4. Tue 3 Nov10
  5. Wed 4 Nov22
  6. Thu 5 Nov9
    9 opinions, no index below 10
  7. Fri 6 Nov15
  8. Sat 7 Nov15
  9. Sun 8 Nov25
  10. Mon 9 Nov26
  11. Tue 10 Nov17
  12. Wed 11 Nov12
  13. Thu 12 Nov15
  14. Fri 13 Nov12 so far

No day this week is set against the rest of the week: both need a full read (30 opinions from 20 threads and 20 accounts).

Is Claude Opus 5 getting worse?

This measures opinion, not capability: whether Reddit's view of Claude Opus 5 moved, not whether the model changed. Reddit's view has not moved by more than noise: 35 in the last 7 days against 30 in the 7 before, a gap of 5.6 points inside its 95% margin of ±7.6; a smaller shift can't be ruled out.

Praised and criticised

Share of the opinions on each topic that praise it. Tagged by a language model; topics never feed the index.

  1. Writing & tonemostly criticised33
  2. Codingsplit21
  3. Intelligencesplit19
  4. Follow-throughmostly criticised14

Reddit and the benchmarks

Its rank on each list, bottom to top. Outside numbers sit beside Reddit and never feed its index. Hover a name for the value and its source.

  1. #24 of 25 with a full read
  2. #13 of 128 on Arena
  3. #15 of 94 on Arena
  4. #13 of 107 at Artificial Analysis
  5. #3 of 69 at Artificial Analysis
  6. #2 of 56 at Artificial Analysis
  7. #10 of 96 at Epoch

$5 in / $25 out per million tokens · 1M context · reasoning mode · OpenRouter, 13 Nov

Per subreddit

The model's index within each subreddit, from 10 opinions; faded below 30 opinions, 20 threads or 20 accounts.

  1. r/ClaudeCode37
  2. r/ClaudeAI36
  3. r/claude17

Threads behind the opinions

The 20 threads with the most opinions about this model. A thread's index reads the opinions in it, not the post, and shows from 10 opinions.

ThreadSubredditOpinionsIndex
Opus 5.5 started coming up with unintelligible responses similar to how Opus 5 didr/ClaudeCode4–
Opus 5 is goner/ClaudeCode4–
Fable 5.2in 4 commentsr/ClaudeAI4–
Opus 5.5 in the past two weeksin 4 commentsr/ClaudeCode4–
If Opus 5.5 is nerfed, why not just revert to Opus 5?r/claude4–
Unpopular opinion: I am back on Opus 5.5 (after burning 2weeks worth of Fable 5.2 tokens)in 3 commentsr/claude3–
Should I trust if Gemini or Claude rates my character sheet/card?r/SillyTavernAI3–
Was there ever an explanation for that creepy Opus 5.0 glitch a few months ago?r/ClaudeAI3–
My 4mo old Opus 5 vs Gemini 4 Hydrogen — same 1-prompt 3D game challenger/GeminiAI2–
I hate how Claude formulates responses, they are very hard to readin 2 commentsr/ClaudeAI2–
How is Opus 5.5 now that everyone is running to Fable 5.2?in 2 commentsr/claude2–
[2610.29162v1] Why is AI-generated language so hard to understand?in 2 commentsr/LocalLLaMA2–
OpenAI is getting left in the dust right nowin 2 commentsr/OpenAI2–
Fable 5.2 vs. Opus 5.5: Finding the Sweet Spotin 2 commentsr/ClaudeAI2–
Fable 5.2 is here! 30% cheaper and much cheaper than Fable 5.1in 2 commentsr/ClaudeCode2–
Anthropic should offer a free Reset and restore Opus 5.5r/ClaudeCode2–
Claude again ignoring all hooks (first time since Opus 5.0)r/ClaudeCode2–
Opus 5.5 goes UP on Benchmaxxing Benchin 2 commentsr/ClaudeAI2–
As a GPT user, I used Opus 5.5 once and i feel incredibly lied to by benchmarksin 2 commentsr/ClaudeAI2–
Rant: Anthropic, stop silently degrading models when you need compute. You will undermine trust.in 2 commentsr/ClaudeCode2–

Weekly email

Every Monday: the warmest and coldest models, and who moved beyond noise. No tracking; one click unsubscribes.