Models
Anthropic
Agentic coding FrontierCode1.1 by effort level

AnthropicX · Sep 28, 2026 · official

Agentic coding FrontierCode1.1 by effort level

Anthropic's line chart drew 358K views on X: 0.8x its median post and #185 of 1,162 AI chart posts we hold by views. Read Oct 13, 2026.

Agentic coding performance by effort level

XData Line chart Claude Opus 5 All Anthropic models GPT-6 SolSonnet 5.5Opus 5.5Sonnet 5

Anthropic: Agentic coding FrontierCode1.1 by effort level — Published by Anthropic on X, Sep 28, 2026. Source: x.com

73/ 100

ViralChart score

Reached and resonated

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

#154 of 1,162 AI chart posts we hold · #20 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 sits in the Reached and resonated quadrant at #154 of 1,162 AI chart posts.

Its score of 73 sits at #154 of 1,162 AI chart posts, above the field.

The post carries 4 charts, and every chart in the post shares the post's numbers.

Saves land at 0.051%, the 30th percentile among AI chart posts, below the 0.076% median.

4charts in this one post

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

0.19views per follower

358K views from an account with 1.9M followers.

4.9xthe median line chart post

Across 68 line chart posts we hold, the median gets 73.7K views.

bottom 30%save rate

0.051% 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 #154 of 1,162

Views	358K	#185	top 16%
Likes	2.4K	#122	top 10%
Engagement rate	0.75%	#562	top 48%
Save rate	0.051%	#814	bottom 30%

Among 56 Anthropic posts

Score #20 of 56

Views	358K	#30	bottom 47%
Likes	2.4K	#25	top 44%
Engagement rate	0.75%	#17	top 29%
Save rate	0.051%	#33	bottom 42%

Growth

Our reads cover 27 hours

Views358K

Age at our read15 days

Views per day of life23.8Kviews divided by days since it was posted

Gained between our reads+223views over 27 hours, about 195 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 28, 2026

Anthropic posts agentic coding FrontierCode1.1 by effort level

A line chart on agentic coding performance by effort level drew 358K views and a 0.75% engagement rate.

What happened

Anthropic published a line chart on agentic coding FrontierCode1.1 by effort level on September 28, 2026. The post carried 4 charts, including knowledge work by effort level, agentic coding CursorBench by effort level, and agentic terminal coding by effort level.

The numbers

It reached 358K views, #185 of 1,162 AI chart posts, against a 39.9K median among AI chart posts. Its score of 73 ranks #154 of 1,162 AI chart posts and #20 of 56 Anthropic posts.

The lesson

At 0.051%, saves sit at the 30th percentile among AI chart posts against a 0.076% median. The 4 charts in this post each carry the post's numbers, and the save rate lands below the field.

What it means

At #20 of 56 Anthropic posts, this chart post trails the account's own top ranks while clearing the AI chart median on views. The 0.051% save rate against the 0.076% median leaves a gap on the metric that separates kept charts from seen ones.

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

Data and API

22 points read off this chart

Estimated from the image 37%

Series	Group	Value	Read
Sonnet 5.5	Low	29.5 %	estimated
Sonnet 5.5	Med	37 %	estimated
Sonnet 5.5	High	49.5 %	estimated
Sonnet 5.5	Xhigh	52.25 %	estimated
Sonnet 5.5	Max	46.25 %	estimated
Opus 5.5	High	47.5 %	estimated
Opus 5.5	Xhigh	54.5 %	estimated
Opus 5.5	Xhigh	52 %	estimated
Opus 5.5	Max	51.5 %	estimated
Opus 5.5	Max	54.5 %	estimated
Sonnet 5	Med	37.5 %	estimated
Sonnet 5	High	46 %	estimated

Showing 12 of 22. All points, the redraw and the maker

Max plan · API

GET https://viral-chart.com/api/posts/e744a8218ad8.json
GET https://viral-chart.com/api/charts/e744a8218ad8.json
GET https://viral-chart.com/api/charts/e744a8218ad8.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 e744a8218ad8.

Approximate values. Our two readings of this chart agreed only in part (confidence 0.37 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 plan API docs

	Path	Returns	Plan
GET	`/api/v1/charts/e744a8218ad8`	Title, publisher, date, form, point count; with a Max key, the data link	Open
GET	`/api/v1/charts/e744a8218ad8/data`	Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV	Max
GET	`/api/v1/charts/e744a8218ad8/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/e744a8218ad8/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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