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Claude · Last 7 days

Claude Fable 5.1

0–100 · higher means more positive community experience, not benchmark performance.

Updated 2026-10-02 14:32 UTC · 2026-09-25 – 2026-10-02 UTC
Experience score66.9/10044 comments in 7 days

RECENT EXPERIENCE

How the Experience Index is changing

+2.2vs 7 days ago · points

30 days of rolling 7-day scores at each daily snapshot. The vertical scale adapts to the data. Missing or insufficient samples leave gaps; today is still updating.

Claude Fable 5.1 · Reddit · 30 days of rolling 7-day experience scores 4050607080 Observed-day mean: 64.0 2026-09-03 · 52.7 · n=41 · 2026-08-27T23:00:03+00:00 – 2026-09-03T23:00:03+00:002026-09-04 · 53.9 · n=67 · 2026-08-28T23:00:03+00:00 – 2026-09-04T23:00:03+00:002026-09-05 · 52.3 · n=89 · 2026-08-29T23:00:03+00:00 – 2026-09-05T23:00:03+00:002026-09-06 · 55.3 · n=115 · 2026-08-30T23:00:02+00:00 – 2026-09-06T23:00:02+00:002026-09-07 · 55.7 · n=132 · 2026-08-31T23:00:03+00:00 – 2026-09-07T23:00:03+00:002026-09-08 · 57.1 · n=150 · 2026-09-01T23:00:03+00:00 – 2026-09-08T23:00:03+00:002026-09-09 · 57.3 · n=149 · 2026-09-02T23:00:04+00:00 – 2026-09-09T23:00:04+00:002026-09-10 · 61.1 · n=119 · 2026-09-03T23:00:05+00:00 – 2026-09-10T23:00:05+00:002026-09-11 · 63.5 · n=109 · 2026-09-04T23:00:04+00:00 – 2026-09-11T23:00:04+00:002026-09-12 · 70.4 · n=103 · 2026-09-05T23:57:03+00:00 – 2026-09-12T23:57:03+00:002026-09-13 · 72.1 · n=84 · 2026-09-06T23:57:03+00:00 – 2026-09-13T23:57:03+00:002026-09-14 · 74.9 · n=85 · 2026-09-07T23:57:03+00:00 – 2026-09-14T23:57:03+00:002026-09-15 · 75.9 · n=75 · 2026-09-08T23:57:03+00:00 – 2026-09-15T23:57:03+00:002026-09-16 · 68.2 · n=74 · 2026-09-09T23:57:03+00:00 – 2026-09-16T23:57:03+00:002026-09-17 · 67.8 · n=72 · 2026-09-10T23:57:03+00:00 – 2026-09-17T23:57:03+00:002026-09-18 · 58.5 · n=49 · 2026-09-11T23:57:02+00:00 – 2026-09-18T23:57:02+00:002026-09-19 · 57.6 · n=51 · 2026-09-12T23:57:03+00:00 – 2026-09-19T23:57:03+00:002026-09-20 · 53.3 · n=50 · 2026-09-13T23:57:03+00:00 – 2026-09-20T23:57:03+00:002026-09-21 · 56.3 · n=49 · 2026-09-14T23:57:03+00:00 – 2026-09-21T23:57:03+00:002026-09-22 · 58.5 · n=52 · 2026-09-15T23:57:03+00:00 – 2026-09-22T23:57:03+00:002026-09-23 · 64.3 · n=52 · 2026-09-16T23:57:03+00:00 – 2026-09-23T23:57:03+00:002026-09-24 · 66.6 · n=53 · 2026-09-17T23:57:03+00:00 – 2026-09-24T23:57:03+00:002026-09-25 · 68.9 · n=59 · 2026-09-18T23:57:03+00:00 – 2026-09-25T23:57:03+00:002026-09-26 · 68.5 · n=55 · 2026-09-19T23:57:03+00:00 – 2026-09-26T23:57:03+00:002026-09-27 · 70.7 · n=50 · 2026-09-20T23:57:03+00:00 – 2026-09-27T23:57:03+00:002026-09-28 · 72.8 · n=47 · 2026-09-21T23:57:03+00:00 – 2026-09-28T23:57:03+00:002026-09-29 · 71.3 · n=46 · 2026-09-22T23:57:03+00:00 – 2026-09-29T23:57:03+00:002026-09-30 · 72.5 · n=42 · 2026-09-23T23:57:03+00:00 – 2026-09-30T23:57:03+00:002026-10-01 · 70.4 · n=33 · 2026-09-24T23:57:02+00:00 – 2026-10-01T23:57:02+00:002026-10-02 · 71.1 · n=30 · 2026-09-25T14:32:03+00:00 – 2026-10-02T14:32:03+00:00 71.1 09-0309-1109-1809-2510-02 Claude Fable 5.1 · Reddit · 30 days of rolling 7-day experience scores 4050607080 Observed-day mean: 64.0 2026-09-03 · 52.7 · n=41 · 2026-08-27T23:00:03+00:00 – 2026-09-03T23:00:03+00:002026-09-04 · 53.9 · n=67 · 2026-08-28T23:00:03+00:00 – 2026-09-04T23:00:03+00:002026-09-05 · 52.3 · n=89 · 2026-08-29T23:00:03+00:00 – 2026-09-05T23:00:03+00:002026-09-06 · 55.3 · n=115 · 2026-08-30T23:00:02+00:00 – 2026-09-06T23:00:02+00:002026-09-07 · 55.7 · n=132 · 2026-08-31T23:00:03+00:00 – 2026-09-07T23:00:03+00:002026-09-08 · 57.1 · n=150 · 2026-09-01T23:00:03+00:00 – 2026-09-08T23:00:03+00:002026-09-09 · 57.3 · n=149 · 2026-09-02T23:00:04+00:00 – 2026-09-09T23:00:04+00:002026-09-10 · 61.1 · n=119 · 2026-09-03T23:00:05+00:00 – 2026-09-10T23:00:05+00:002026-09-11 · 63.5 · n=109 · 2026-09-04T23:00:04+00:00 – 2026-09-11T23:00:04+00:002026-09-12 · 70.4 · n=103 · 2026-09-05T23:57:03+00:00 – 2026-09-12T23:57:03+00:002026-09-13 · 72.1 · n=84 · 2026-09-06T23:57:03+00:00 – 2026-09-13T23:57:03+00:002026-09-14 · 74.9 · n=85 · 2026-09-07T23:57:03+00:00 – 2026-09-14T23:57:03+00:002026-09-15 · 75.9 · n=75 · 2026-09-08T23:57:03+00:00 – 2026-09-15T23:57:03+00:002026-09-16 · 68.2 · n=74 · 2026-09-09T23:57:03+00:00 – 2026-09-16T23:57:03+00:002026-09-17 · 67.8 · n=72 · 2026-09-10T23:57:03+00:00 – 2026-09-17T23:57:03+00:002026-09-18 · 58.5 · n=49 · 2026-09-11T23:57:02+00:00 – 2026-09-18T23:57:02+00:002026-09-19 · 57.6 · n=51 · 2026-09-12T23:57:03+00:00 – 2026-09-19T23:57:03+00:002026-09-20 · 53.3 · n=50 · 2026-09-13T23:57:03+00:00 – 2026-09-20T23:57:03+00:002026-09-21 · 56.3 · n=49 · 2026-09-14T23:57:03+00:00 – 2026-09-21T23:57:03+00:002026-09-22 · 58.5 · n=52 · 2026-09-15T23:57:03+00:00 – 2026-09-22T23:57:03+00:002026-09-23 · 64.3 · n=52 · 2026-09-16T23:57:03+00:00 – 2026-09-23T23:57:03+00:002026-09-24 · 66.6 · n=53 · 2026-09-17T23:57:03+00:00 – 2026-09-24T23:57:03+00:002026-09-25 · 68.9 · n=59 · 2026-09-18T23:57:03+00:00 – 2026-09-25T23:57:03+00:002026-09-26 · 68.5 · n=55 · 2026-09-19T23:57:03+00:00 – 2026-09-26T23:57:03+00:002026-09-27 · 70.7 · n=50 · 2026-09-20T23:57:03+00:00 – 2026-09-27T23:57:03+00:002026-09-28 · 72.8 · n=47 · 2026-09-21T23:57:03+00:00 – 2026-09-28T23:57:03+00:002026-09-29 · 71.3 · n=46 · 2026-09-22T23:57:03+00:00 – 2026-09-29T23:57:03+00:002026-09-30 · 72.5 · n=42 · 2026-09-23T23:57:03+00:00 – 2026-09-30T23:57:03+00:002026-10-01 · 70.4 · n=33 · 2026-09-24T23:57:02+00:00 – 2026-10-01T23:57:02+00:002026-10-02 · 71.1 · n=30 · 2026-09-25T14:32:03+00:00 – 2026-10-02T14:32:03+00:00 71.1 09-0309-1109-1809-2510-02
Daily readings & sample sizes
DateScorenScoring window (UTC)
2026-10-0271.1302026-09-25T14:32:03+00:00 – 2026-10-02T14:32:03+00:00
2026-10-0170.4332026-09-24T23:57:02+00:00 – 2026-10-01T23:57:02+00:00
2026-09-3072.5422026-09-23T23:57:03+00:00 – 2026-09-30T23:57:03+00:00
2026-09-2971.3462026-09-22T23:57:03+00:00 – 2026-09-29T23:57:03+00:00
2026-09-2872.8472026-09-21T23:57:03+00:00 – 2026-09-28T23:57:03+00:00
2026-09-2770.7502026-09-20T23:57:03+00:00 – 2026-09-27T23:57:03+00:00
2026-09-2668.5552026-09-19T23:57:03+00:00 – 2026-09-26T23:57:03+00:00
2026-09-2568.9592026-09-18T23:57:03+00:00 – 2026-09-25T23:57:03+00:00
2026-09-2466.6532026-09-17T23:57:03+00:00 – 2026-09-24T23:57:03+00:00
2026-09-2364.3522026-09-16T23:57:03+00:00 – 2026-09-23T23:57:03+00:00
2026-09-2258.5522026-09-15T23:57:03+00:00 – 2026-09-22T23:57:03+00:00
2026-09-2156.3492026-09-14T23:57:03+00:00 – 2026-09-21T23:57:03+00:00
2026-09-2053.3502026-09-13T23:57:03+00:00 – 2026-09-20T23:57:03+00:00
2026-09-1957.6512026-09-12T23:57:03+00:00 – 2026-09-19T23:57:03+00:00
2026-09-1858.5492026-09-11T23:57:02+00:00 – 2026-09-18T23:57:02+00:00
2026-09-1767.8722026-09-10T23:57:03+00:00 – 2026-09-17T23:57:03+00:00
2026-09-1668.2742026-09-09T23:57:03+00:00 – 2026-09-16T23:57:03+00:00
2026-09-1575.9752026-09-08T23:57:03+00:00 – 2026-09-15T23:57:03+00:00
2026-09-1474.9852026-09-07T23:57:03+00:00 – 2026-09-14T23:57:03+00:00
2026-09-1372.1842026-09-06T23:57:03+00:00 – 2026-09-13T23:57:03+00:00
2026-09-1270.41032026-09-05T23:57:03+00:00 – 2026-09-12T23:57:03+00:00
2026-09-1163.51092026-09-04T23:00:04+00:00 – 2026-09-11T23:00:04+00:00
2026-09-1061.11192026-09-03T23:00:05+00:00 – 2026-09-10T23:00:05+00:00
2026-09-0957.31492026-09-02T23:00:04+00:00 – 2026-09-09T23:00:04+00:00
2026-09-0857.11502026-09-01T23:00:03+00:00 – 2026-09-08T23:00:03+00:00
2026-09-0755.71322026-08-31T23:00:03+00:00 – 2026-09-07T23:00:03+00:00
2026-09-0655.31152026-08-30T23:00:02+00:00 – 2026-09-06T23:00:02+00:00
2026-09-0552.3892026-08-29T23:00:03+00:00 – 2026-09-05T23:00:03+00:00
2026-09-0453.9672026-08-28T23:00:03+00:00 – 2026-09-04T23:00:03+00:00
2026-09-0352.7412026-08-27T23:00:03+00:00 – 2026-09-03T23:00:03+00:00

Reddit · 71.1 · 30 scored comments · Read platform reviews →

ONE MODEL, DIFFERENT COMMUNITIES

Across the communities

Last 7 days

Scored separately for each platform, with different samples and audiences. Platform scores are not simply averaged; scored counts exclude quota-only comments.

RedditLatest scored opinion 2026-09-30 13:29 UTC71.130 opinionsvs 7d ago +2.2Hacker NewsLatest scored opinion 2026-10-01 15:13 UTC41.86 opinionsvs 7d ago −8.8ZhihuLatest scored opinion 2026-10-02 12:09 UTC—4 opinionsInsufficient sampleRedNoteNo scored opinion timestamp—0 opinionsInsufficient sample

Scores range from 0 to 100. Select a platform for its trend and reviews. Latest opinion time is not crawler health.

What people think

One user, comparing Claude Fable 5.1/Opus 5.5 to Astra, notes it isn't fundamentally different but its first-cut code quality is better. One user said that in a recent project, Claude Fable 5.1 made some significant mistakes.

About the sample and scores

As of 2026-10-02 14:32:03 UTC, Claude Fable 5.1 in the Claude family has 44 explicitly attributed community comments in the last 7 days; its community score is 66.9/100. Available category scores include General text 54.8/100 (n=14); Coding 62.2/100 (n=5); Reasoning 71.7/100 (n=15). Scoring method and sources

Community reviews

Selected comments from the last 7 days. The balance of excerpts does not represent the share of positive reviews.

Platform
Sentiment

11 selected excerpts

Community reports about limits cannot establish official allowances.

NeutralGeneral text

“they were within a few % points of the prior runs on both token usage, time and surfacing most but not all the things it should have surfaced on the code review”

Reddit · r/ClaudeAI ↗
PositiveReasoning

“fable 5.1 / opus 5.5 class of models have an edge”

Reddit · r/LocalLLaMA ↗
Comment context
From the same comment ↗

Once you add a good harness and some tools (python, websearch, ...) they become almost as capable as the latest top model for a fraction of the cost and can be run locally at decent speed.(for my use case, qwen 3.8 27b was already better than sonnet) I say almost because for some very hard problems i still believe fable 5.1 / opus 5.5 class of models have an edge. But for 99% of usecases where you don't try to solve frontier math problem or rewrite a whole new OS, they are irrelevant compared to newly released open sources models.

PositiveGeneral text

“Funniest interaction or case I've had was a Fable 5.1 that treats me very well, but writes dry and cut messages to subagents.”

Reddit · r/ClaudeAI ↗
PositiveCoding

“Fable 5.1 still makes less mistakes on the terminal than Opus 5.5”

Reddit · r/codex ↗
NeutralUsage limits

“Only issue with that plan is that it will suck up your usage hella hard. Fable is still really expensive.”

Reddit · r/ClaudeAI ↗
Comment context
From the same comment ↗

Or use Fable-5.1 to review, even better. That will be a model with more parameters, meaning it has better knowledge of rarer truths, and it will also have different pre-training and post-training.

NegativeUsage limits

“Fable 5.1 in Max Reasoning mode is still more expensive overall than Astra 6 Max, to the point where one 5h window wasn’t enough to finish a complex prompt”

Reddit · r/codex ↗
NeutralReasoning

“What the OP stated happens with Fable 5.1, Opus 5.5, Sonnet 5.5 too.”

Reddit · r/codex ↗
Comment context
Original post ↗

If Astra is that great, how come its code introduces so many bugs? Give Astra a complicated task on Ultra, and then after give the prompt "review" - you will get about 5 problems. Ask to fix those, then after review again and you'll get another 5. Should I just not bother sending the review prompt and hope for the best, and only ask to fix issues I notice myself?!

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