Models
Anthropic
Claude Opus 5.5 (Max) Ranked #1

@arenaX · Sep 24, 2026

Claude Opus 5.5 (Max) Ranked #1

@arena's leaderboard drew 177.6K views on X: 3.8x its median post and #277 of 1,162 AI chart posts we hold by views. Read Oct 13, 2026.

Claude Opus 5.5 (Max) tops leaderboard with 1,818 score

XData Leaderboard Claude Opus 5 All Anthropic models Claude Fable 5Claude Opus 5.5 (Max)GPT-6 Astra (Max)Claude Fable 5.1 (Max)Claude Opus 5 (Max)GPT-6 Sol (Max)Qwen3.8-MaxClaude Opus 5 (High)

@arena: Claude Opus 5.5 (Max) Ranked #1 — Published by @arena on X, Sep 24, 2026. Source: x.com

78/ 100

ViralChart score

Reached and resonated

More views and a higher engagement rate than the median post: it travelled and people acted on it.

#88 of 1,162 AI chart posts we hold · #4 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 Reached and resonated quadrant at #88 of 1,162 AI chart posts.

Its score of 78 lands at #88 of 1,162 AI chart posts and #4 of 239 @arena posts.

The post drew 178K views against a company median of 46.2K, a 3.8x ratio.

Engagement rate of 1.18% sits at the 82nd percentile among AI chart posts, 1.6x the 0.73% median.

3.8x@arena's median post

177.6K views, where @arena's typical post gets 46.2K.

3.9xthe median leaderboard post

Across 107 leaderboard posts we hold, the median gets 45.3K views.

top 18%engagement rate

1.18% 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 24, 2026. This one was #1 of 2 by views that day.

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 #88 of 1,162

Views	177.6K	#277	top 24%
Likes	1.8K	#172	top 15%
Engagement rate	1.18%	#211	top 18%
Save rate	0.108%	#382	top 33%

Among 239 @arena posts

Score #4 of 239

Views	177.6K	#51	top 21%
Likes	1.8K	#19	top 8%
Engagement rate	1.18%	#24	top 10%
Save rate	0.108%	#64	top 27%

Growth

Our reads cover 28 hours

Views177.6K

Age at our read20 days

Views per day of life9Kviews divided by days since it was posted

Gained between our reads+45views over 28 hours, about 38 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 · Sep 24, 2026

@arena posts Claude Opus 5.5 (Max) leaderboard chart

A 15-model leaderboard from @arena drew 178K views and a 1.18% engagement rate, above the AI chart median.

What happened

@arena posted a leaderboard chart on September 24, 2026, showing Claude Opus 5.5 (Max) at the top. The account posted 2 items that day, including a Code GPT-6 Arena WebDev Leaderboard chart with 159K views.

The numbers

The post reached 178K views, ranking #277 of 1,162 AI chart posts and #51 of 239 @arena posts by views. Its score of 78 ranks #88 of 1,162 AI chart posts and #4 of 239 @arena posts.

The lesson

A 15-model leaderboard chart earned a 1.18% engagement rate, 1.6x the 0.73% median among AI chart posts. The chart shows Claude Opus 5.5 (Max) at 1,818 score, and that dense comparison held an 82nd percentile engagement rate.

What it means

For @arena, this post's 178K views sit 3.8x above the company median of 46.2K, and its #4 of 239 @arena posts by score shows the account's leaderboard format travels. The 1.18% engagement rate against the 0.73% AI chart median marks this as a top-quintile post for the format.

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

15 points read off this chart

Estimated from the image 50%

Group	Value	Read
Claude Opus 5.5 (Max)	1818	estimated
GPT-6 Astra (Max)	1792	estimated
Claude Fable 5.1 (Max)	1755	estimated
Claude Opus 5 (Max)	1692	estimated
GPT-6 Sol (Max)	1686	estimated
Qwen3.8-Max	1671	estimated
Claude Opus 5 (High)	1662	estimated
Qwen3.8-Max (2026-09-02)	1661	estimated
Kimi K3 (Max)	1660	estimated
Muse Spark 1.3 (Max)	1658	estimated
Qwen3.8-Flash-Next	1636	estimated
Grok-4.7 (xHigh)	1632	estimated

Showing 12 of 15. All points, the redraw and the maker

Max plan · API

GET https://viral-chart.com/api/posts/54f4206a3781.json
GET https://viral-chart.com/api/charts/54f4206a3781.json
GET https://viral-chart.com/api/charts/54f4206a3781.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 54f4206a3781.

See the Max plan API docs

	Path	Returns	Plan
GET	`/api/v1/charts/54f4206a3781`	Title, publisher, date, form, point count; with a Max key, the data link	Open
GET	`/api/v1/charts/54f4206a3781/data`	Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV	Max
GET	`/api/v1/charts/54f4206a3781/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/54f4206a3781/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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