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AnthropicX · Sep 22, 2026 · official

Claude Opus 5.5 Benchmark Comparison

Anthropic's table chart drew 1.6M views on X: 3.6x its median post and #72 of 1,162 AI chart posts we hold by views. Read Oct 13, 2026.

Claude Opus 5.5 benchmark results across multiple tasks

XDataTable chartClaude agents and computer useAll Anthropic modelsGPT-6 AstraOpus 5.5Fable 5.1Opus 5.3GPT-5.6 Sol
Published by Anthropic on X, Sep 22, 2026. Source: x.com
77/ 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.

#95 of 1,162 AI chart posts we hold · #12 of 56 Anthropic 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 lands in the Wide but thin quadrant, at #95 of 1,162 AI chart posts.

Its score of 77 sits at #95 of 1,162 AI chart posts and #12 of 56 Anthropic posts.

The post drew 1.6M views against a company median of 431K, a 3.6x ratio.

At 0.83 views per follower it ran 4.1x the 0.20 median across posts with known followers, 74th percentile.

12xthe median table chart post

Across 95 table chart posts we hold, the median gets 133.2K views.

3.6xAnthropic's median post

1.6M views, where Anthropic's typical post gets 431K.

2posts from Anthropic that day

Part of a run of 2 posts on Sep 22, 2026. This one was #1 of 2 by views that day.

bottom 31%save rate

0.052% 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 56 from Anthropic.

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 #95 of 1,162

Views1.6M#72top 6%
Likes8K#38top 3%
Engagement rate0.60%#712bottom 39%
Save rate0.052%#798bottom 31%

Among 56 Anthropic posts

Score #12 of 56

Views1.6M#14top 24%
Likes8K#11top 19%
Engagement rate0.60%#26top 46%
Save rate0.052%#31bottom 46%

Growth

Our reads cover 27 hours

Views1.6M
Age at our read21 days
Views per day of life74.7Kviews divided by days since it was posted
Gained between our reads+2Kviews over 27 hours, about 1.7K 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.

Anthropic'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 22, 2026

Anthropic posts Claude Opus 5.5 benchmark table chart

A table chart of Claude Opus 5.5 benchmark results reached 1.6M views on September 22, 2026, with a 0.60% engagement rate.

What happened

Anthropic published a table chart on September 22, 2026 covering Claude Opus 5.5 benchmark results across multiple tasks. The account posted 2 items that day, including one on real-world knowledge GDPval-AA tasks by effort level at 1.5M views.

The numbers

The post reached 1.6M views, #72 of 1,162 AI chart posts and #14 of 56 Anthropic posts. Its score of 77 ranked #95 of 1,162 AI chart posts.

The lesson

A single table chart showing 5 models drew 1.6M views, 3.6x Anthropic's median of 431K, but its 0.052% save rate sits below the reach.

What it means

For Anthropic, this post's 1.6M views rank #14 of 56 Anthropic posts while its score of 77 ranks #12 of 56, a wide but thin result.

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

Updates: what Anthropic posted next

  1. Real-world knowledge GDPval-AA tasks by effort level1.5M views
  2. Knowledge work by effort level358K views
  3. Claude Haiku 5.5 benchmark comparison833.4K views
  4. Agentic computer use performance by effort level270.3K views

Data and API

39 points read off this chart

Partly publisher's numbers 99%
SeriesGroupValueRead
Opus 5.5Agentic coding Terminal-Bench 4.066.4printed
Fable 5.1Agentic coding Terminal-Bench 4.055.8printed
Opus 5Agentic coding Terminal-Bench 4.052.3printed
GPT-6 AstraAgentic coding Terminal-Bench 4.057.9printed
GPT-5.6 SolAgentic coding Terminal-Bench 4.037.3printed
Opus 5.5Agentic coding FrontierCode v1.1 (Main)54.4printed
Fable 5.1Agentic coding FrontierCode v1.1 (Main)50.3printed
Opus 5Agentic coding FrontierCode v1.1 (Main)48printed
GPT-6 AstraAgentic coding FrontierCode v1.1 (Main)53.3printed
GPT-5.6 SolAgentic coding FrontierCode v1.1 (Main)47.5printed
Opus 5.5Agentic coding CursorBench 4.057.8printed
Fable 5.1Agentic coding CursorBench 4.051.8printed

Showing 12 of 39. All points, the redraw and the maker

Max plan · API

GET https://viral-chart.com/api/posts/ce30c06b6995.json
GET https://viral-chart.com/api/charts/ce30c06b6995.json
GET https://viral-chart.com/api/charts/ce30c06b6995.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 ce30c06b6995.

See the Max planAPI docs
PathReturnsPlan
GET/api/v1/charts/ce30c06b6995Title, publisher, date, form, point count; with a Max key, the data linkOpen
GET/api/v1/charts/ce30c06b6995/dataEvery point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSVMax
GET/api/v1/charts/ce30c06b6995/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/ce30c06b6995/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?

Anthropic published it on Sep 22, 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.