Models
Anthropic
Claude Model Writing Metrics

@arenaX · Aug 12, 2026

Claude Model Writing Metrics

@arena's small multiples drew 194.5K views on X: 4.2x its median post and #269 of 1,162 AI chart posts we hold by views. Read Oct 13, 2026.

How Claude Models Write Language Complexity

XData Small multiples Claude Fable 5 All Anthropic modelsOpus 5Fable 5Opus 4.7Opus 4.8Opus 4.6Opus 4.5

@arena: Claude Model Writing Metrics — Published by @arena on X, Aug 12, 2026. Source: x.com

73/ 100

ViralChart score

Wide but thin

More views than the median post but a lower engagement rate: many saw it, few acted. Common for big accounts.

#172 of 1,162 AI chart posts we hold · #20 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

It sits in the Wide but thin quadrant, at #172 of 1,162 AI chart posts.

Its 194K views sit 4.2x @arena's 46.2K median post, at #49 of 239 @arena posts by views.

The 0.18% save rate lands at the 88th percentile among AI chart posts, against a 0.076% median.

A score of 73 puts it at #172 of 1,162 AI chart posts and #20 of 239 @arena posts.

3charts in this one post

The numbers belong to the post, so every chart in it shares them and it is ranked once.

4.2x@arena's median post

194.5K views, where @arena's typical post gets 46.2K.

7.2xthe median small multiples post

Across 43 small multiples posts we hold, the median gets 27K views.

top 12%save rate

0.182% of viewers bookmarked it to come back to. The median post gets 0.076%.

Public X numbers from our read on Oct 13, 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 #172 of 1,162

Views	194.5K	#269	top 23%
Likes	1K	#271	top 23%
Engagement rate	0.63%	#683	bottom 41%
Save rate	0.182%	#143	top 12%

Among 239 @arena posts

Score #20 of 239

Views	194.5K	#49	top 20%
Likes	1K	#39	top 16%
Engagement rate	0.63%	#134	bottom 44%
Save rate	0.182%	#12	top 5%

Growth

Our reads cover 28 hours

Views194.5K

Age at our read62 days

Views per day of life3.1Kviews divided by days since it was posted

Gained between our reads+7views over 28 hours, about 6 a day now

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 · Aug 12, 2026

@arena charts how Claude models write language complexity

The small multiples post drew 194K views and a 0.18% save rate, with engagement at 0.63%.

What happened

@arena posted a small multiples chart on how Claude models write language complexity on August 12, 2026. It came with 3 charts in the post and was the account's only post that day.

The numbers

It reached 194K views, #269 of 1,162 AI chart posts by views and #49 of 239 @arena posts. Its score of 73 ranks #172 of 1,162 AI chart posts.

The lesson

A 0.18% save rate at the 88th percentile among AI chart posts shows readers bookmark this small multiples form. The 0.63% engagement rate sits below the median, so saves and engagement move apart here.

What it means

At #20 of 239 @arena posts by score, this chart sits well inside the account's own range. The 4.2x lead over @arena's 46.2K median views comes with a 0.63% engagement rate below the AI chart median.

Written by ViralChart from public numbers read on Oct 13, 2026. Every number is checked against our data before it is shown.

Updates: what @arena posted next

Data and API

24 points read off this chart

Estimated from the image 95%

Series	Group	Value	Read
Answer length (words per answer)	Opus 5	510	printed
Answer length (words per answer)	Fable 5	316	printed
Answer length (words per answer)	Opus 4.7	276	printed
Answer length (words per answer)	Opus 4.8	259	printed
Answer length (words per answer)	Opus 4.6	234	printed
Answer length (words per answer)	Opus 4.5	158	printed
Sentence length (words per sentence)	Opus 5	12.22	printed
Sentence length (words per sentence)	Fable 5	11.2	printed
Sentence length (words per sentence)	Opus 4.8	9.7	printed
Sentence length (words per sentence)	Opus 4.6	9.36	printed
Sentence length (words per sentence)	Opus 4.7	9.33	printed
Sentence length (words per sentence)	Opus 4.5	7.74	printed

Showing 12 of 24. All points, the redraw and the maker

Max plan · API

GET https://viral-chart.com/api/posts/178ff11ee8eb.json
GET https://viral-chart.com/api/charts/178ff11ee8eb.json
GET https://viral-chart.com/api/charts/178ff11ee8eb.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 178ff11ee8eb.

See the Max plan API docs

	Path	Returns	Plan
GET	`/api/v1/charts/178ff11ee8eb`	Title, publisher, date, form, point count; with a Max key, the data link	Open
GET	`/api/v1/charts/178ff11ee8eb/data`	Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV	Max
GET	`/api/v1/charts/178ff11ee8eb/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/178ff11ee8eb/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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