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@arenaX · Oct 2, 2026

Pareto Frontier for Agent Arena

@arena's scatter plot drew 59.2K views on X: 1.3x its median post and #499 of 1,162 AI chart posts we hold by views. Read Oct 13, 2026.

Pareto frontier of AI models by score and cost

XDataScatter plotGPT-6All OpenAI modelsGPT-6.1 Sol (Max)Claude Fable 5.1 (Max)Claude Opus 5.5 (High)Deepseek V4.1 Flash (Max)GPT-6 Luna V2.6 ProMiMo V2.6 FlashMimo V2.5 Pro
Published by @arena on X, Oct 2, 2026. Source: x.com
57/ 100

ViralChart score

Reached and resonated

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

#509 of 1,162 AI chart posts we hold · #109 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 Reached and resonated quadrant, at #509 of 1,162 AI chart posts.

The post carries 2 charts, and every chart in the post shares the post's numbers.

It was one of 3 posts from this account that day, and it ranked #2 of 3 by views that day.

Its 0.86% engagement rate sits at the 63rd percentile among AI chart posts, above the 0.73% median.

2charts in this one post

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

0.25views per follower

59.2K views from an account with 234.1K followers.

3posts from @arena that day

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

top 37%engagement rate

0.86% of viewers liked, reposted, quoted or replied. The median post gets 0.73%.

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 #509 of 1,162

Views59.2K#499top 43%
Likes427#489top 42%
Engagement rate0.86%#428top 37%
Save rate0.076%#584bottom 50%

Among 239 @arena posts

Score #109 of 239

Views59.2K#105top 44%
Likes427#101top 42%
Engagement rate0.86%#75top 31%
Save rate0.076%#129bottom 46%

Growth

Our reads cover 3 days

Views59.2K
Age at our read11 days
Views per day of life5.4Kviews divided by days since it was posted
Gained between our reads+138views over 3 days, about 49 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 · Oct 2, 2026

@arena posts Pareto Frontier for Agent Arena scatter plot

The October 2, 2026 scatter plot reached 59.2K views and a 0.86% engagement rate, above the 0.73% median among AI chart posts.

What happened

@arena posted a scatter plot on the Pareto Frontier for Agent Arena on October 2, 2026. It was one of 3 posts from this account that day, alongside Agent Arena Leaderboard Rankings and Claude Sonnet 5.5 vs. Pareto Frontier for Agent.

The numbers

It reached 59.2K views, ranking #499 of 1,162 AI chart posts. Its score of 57 ranked #509 of 1,162 AI chart posts and #109 of 239 @arena posts.

The lesson

At 0.86% engagement against a 0.73% median among AI chart posts, this scatter plot cleared the median rate. The 2 charts in the post share the post's numbers, so the engagement rate is the post's, not one chart's.

What it means

At #109 of 239 @arena posts, this post sits in the account's middle range. Its 59.2K views fall below the 60.7K of the account's Agent Arena Leaderboard Rankings post that day.

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

  1. Multi-Image Edit Arena Rankings67.2K views
  2. Mistral Large 4 vs Pareto Frontier for Code51.4K views
  3. Code Arena: WebDev Top 15 Labs25.9K views
  4. Jev Router vs Pareto Frontier for Agent Arena46.2K views
  5. Model Routing Mix2.9K views
  6. Failure types flagged by AI models1.1K views

Data and API

9 points read off this chart

Estimated from the image 48%
SeriesGroupValueRead
GPT-6.1Sol (Max)Pareto Frontier11.23 %estimated
Claude Opus 5.5 (High)Pareto Frontier10 %estimated
Claude Fable 5.1 (Max)Pareto Frontier15 %estimated
Deepseek V4.1 Flash (Max)Pareto Frontier5 %estimated
GPT 6 Luna (Max)Pareto Frontier0 %estimated
MiMo V2.6 FlashPareto Frontier-5 %estimated
Mimo V2.5 ProPareto Frontier-5 %estimated
MiMo V2.6 ProPareto Frontier0 %estimated
GPT 6.1 Sol (Max)0.3511.23 %estimated

Max plan · API

GET https://viral-chart.com/api/posts/c0c900c6d68e.json
GET https://viral-chart.com/api/charts/c0c900c6d68e.json
GET https://viral-chart.com/api/charts/c0c900c6d68e.skill.md
Make one like thisOpen the post JSONChart data JSONSkill fileAPI 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 c0c900c6d68e.

Approximate values. Our two readings of this chart agreed only in part (confidence 0.48 of 1), so check the original before you quote a number. The API marks it lowConfidence, and ?min_confidence=0.5 leaves it out.

See the Max planAPI docs
PathReturnsPlan
GET/api/v1/charts/c0c900c6d68eTitle, publisher, date, form, point count; with a Max key, the data linkOpen
GET/api/v1/charts/c0c900c6d68e/dataEvery point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSVMax
GET/api/v1/charts/c0c900c6d68e/render?view=1The draw-only view this page usesOpen
POST/mcpTool get_chart_data with this id, for Claude, Cursor and other agentsMax
curlMax
curl -s https://viral-chart.com/api/v1/charts/c0c900c6d68e/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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Questions people ask

Where does this chart come from?

@arena published it on Oct 2, 2026 on X (x.com). We keep it here, with the publisher and date credited as text, so you can study it without leaving.

Can I make a chart like this?

Use the format, not the picture. Open its data page and use Make one like this: it starts from this chart's numbers and takes yours.