Models
Anthropic
Claude Fable 5.1 vs Claude Fable 5

@arenaX · Sep 3, 2026

Claude Fable 5.1 vs Claude Fable 5

@arena's annotated chart drew 34.2K views on X: 0.7x its median post and #618 of 1,162 AI chart posts we hold by views. Read Oct 12, 2026.

XData Annotated chart Claude Fable 5 All Anthropic modelsClaude Fable 5.1 (Max)

@arena: Claude Fable 5.1 vs Claude Fable 5 — Published by @arena on X, Sep 3, 2026. Source: x.com

55/ 100

ViralChart score

Small but loved

Fewer views than the median post but a higher engagement rate: a smaller crowd that acted on it.

#544 of 1,162 AI chart posts we hold · #122 of 239 @arena posts. Score = views 40%, likes 30%, engagement rate 15%, save rate 15%, each as a percentile of every AI chart post we hold.

Our read

The post sits in the Small but loved quadrant, with a score rank of #544 of 1,162 AI chart posts.

Its 1.16% engagement rate sits at the 81st percentile among AI chart posts, against a 0.73% median.

It ranked #2 of 2 posts from this account that day by views.

At 34.2K views it reached 0.74x the 46.2K median for this company's posts.

0.15views per follower

34.2K views from an account with 234.1K followers.

top 19%engagement rate

1.16% of viewers liked, reposted, quoted or replied. The median post gets 0.73%.

2posts from @arena that day

Part of a run of 2 posts on Sep 3, 2026. This one was #2 of 2 by views that day.

0.7x@arena's median post

34.2K views, where @arena's typical post gets 46.2K.

Public X numbers from our read on Oct 12, 2026. Peers: 1,162 AI chart posts we hold and 239 from @arena.

Where it sits

Reach against resonance

Each dot is a post. Right is more views, up is a higher engagement rate. The lines are the medians, so the four corners are the four kinds of post.

Among 1,162 AI chart posts we hold

Score #544 of 1,162

Views	34.2K	#618	bottom 47%
Likes	358	#525	top 45%
Engagement rate	1.16%	#224	top 19%
Save rate	0.079%	#571	top 49%

Among 239 @arena posts

Score #122 of 239

Views	34.2K	#146	bottom 39%
Likes	358	#118	top 49%
Engagement rate	1.16%	#26	top 11%
Save rate	0.079%	#123	bottom 49%

Growth

One read so far

Views34.2K

Age at our read39 days

Views per day of life873views divided by days since it was posted

Dots are our reads. The dotted line from the day it was posted to our first read is a gap, not data.

@arena's posts over time

Every post from this account we hold, by date and views. This one is marked; the line is the running median of the last 10.

News · Sep 3, 2026

@arena posts annotated chart on Claude Fable 5.1 vs Claude Fable 5

An annotated chart comparing Claude Fable 5.1 (Max) and Claude Fable 5 drew 34.2K views and a 1.16% engagement rate.

What happened

@arena published an annotated chart on September 3, 2026, comparing Claude Fable 5.1 (Max) and Claude Fable 5. It was one of 2 posts from this account that day, alongside a post on Code Muse Spark 1.3 (xHigh) Ranked ~#10.

The numbers

It reached 34.2K views, ranking #618 of 1,162 AI chart posts by views and #146 of 239 @arena posts. Its score rank is #544 of 1,162 AI chart posts.

The lesson

An annotated chart with 2 models shown earned a 1.16% engagement rate, the 81st percentile among AI chart posts, against a 0.73% median. The save rate was 0.079%.

What it means

At #122 of 239 @arena posts by score, this chart sits below the account's own median views of 46.2K, with 34.2K views. The 0.74x ratio to the company median shows the gap.

Written by ViralChart from public numbers read on Oct 12, 2026. Every number is checked against our data before it is shown.

Updates: what @arena posted next

Data and API

14 points read off this chart

Estimated from the image 82%

Series	Group	Value	Read
Claude Fable 5.1 (Max)	Overall	1760 score	printed
Claude Fable 5	Overall	1550 score	printed
Claude Fable 5.1 (Max)	Brand & Marketing	1760 score	estimated
Claude Fable 5	Brand & Marketing	1550 score	estimated
Claude Fable 5.1 (Max)	Consumer Products	1760 score	estimated
Claude Fable 5	Consumer Products	1550 score	estimated
Claude Fable 5.1 (Max)	Data & Analytics	1760 score	estimated
Claude Fable 5	Data & Analytics	1550 score	estimated
Claude Fable 5.1 (Max)	Reference-Based Design	1760 score	estimated
Claude Fable 5	Reference-Based Design	1550 score	estimated
Claude Fable 5.1 (Max)	Gaming	1760 score	estimated
Claude Fable 5	Gaming	1550 score	estimated

Showing 12 of 14. All points, the redraw and the maker

Max plan · API

GET https://viral-chart.com/api/posts/fd87385a7cc3.json
GET https://viral-chart.com/api/charts/fd87385a7cc3.json
GET https://viral-chart.com/api/charts/fd87385a7cc3.skill.md

Make one like this Open the post JSON Chart data JSON Skill file API docs

Static files in this prototype. The post JSON holds the public numbers, ranks, score, quadrant, our reads and, when checked, our copy.

API · Max

Use this chart via API

On the Max plan you can pull this chart's numbers with the provenance of each one, as JSON or CSV, with its redraw spec, or call it from an agent over MCP. Chart id fd87385a7cc3.

See the Max plan API docs

	Path	Returns	Plan
GET	`/api/v1/charts/fd87385a7cc3`	Title, publisher, date, form, point count; with a Max key, the data link	Open
GET	`/api/v1/charts/fd87385a7cc3/data`	Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV	Max
GET	`/api/v1/charts/fd87385a7cc3/render?view=1`	The draw-only view this page uses	Open
POST	`/mcp`	Tool get_chart_data with this id, for Claude, Cursor and other agents	Max

curlMax

curl -s https://viral-chart.com/api/v1/charts/fd87385a7cc3/data \
  -H "Authorization: Bearer $VIRALCHART_KEY"

Claude CodeMax

claude mcp add --transport http viralchart https://viral-chart.com/mcp \
  --header "Authorization: Bearer $VIRALCHART_KEY"

60 requests a minute per key; over that you get 429 with Retry-After. Up to 5 keys per account, made on your account page and shown once. Without Max, the data route answers 402 with a link to the plans. The numbers describe a chart its publisher owns, and every file carries a license note.

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