Models
Anthropic
API value per dollar: OpenAI vs Anthropic

@SemiAnalysis_X · Oct 5, 2026

API value per dollar: OpenAI vs Anthropic

@SemiAnalysis_'s scatter plot drew 22.4K views on X: 0.6x @semianalysis_'s median post and #695 of 1,162 AI chart posts we hold by views. Read Oct 13, 2026.

What a dollar of ChatGPT and Claude buys today

XData Scatter plot Claude Sonnet 5 All Anthropic models GPT-6 AstraGPT-6.1 SolClaude Opus 5.5Claude Sonnet 5.5Claude Fable 5.1

@SemiAnalysis_: API value per dollar: OpenAI vs Anthropic — Published by @SemiAnalysis_ on X, Oct 5, 2026. Source: x.com

37/ 100

ViralChart score

Quiet

Fewer views and a lower engagement rate than the median post.

#788 of 1,162 AI chart posts we hold · #19 of 24 @semianalysis_ 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 Quiet quadrant, at #788 of 1,162 AI chart posts by score.

Engagement rate sits at 0.45%, 0.61x the 0.73% median among AI chart posts and the 23rd percentile.

It ranked #1 of 2 posts from this account that day by views.

Score 37 lands at #788 of 1,162 AI chart posts and #19 of 24 @SemiAnalysis_ posts.

bottom 23%engagement rate

0.45% of viewers liked, reposted, quoted or replied. The median post gets 0.73%.

2posts from @semianalysis_ that day

Part of a run of 2 posts on Oct 5, 2026. This one was #1 of 2 by views that day.

0.6x@semianalysis_'s median post

22.4K views, where @semianalysis_'s typical post gets 40.3K.

top 48%save rate

0.080% 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 24 from @semianalysis_.

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 #788 of 1,162

Views	22.4K	#695	bottom 40%
Likes	90	#774	bottom 33%
Engagement rate	0.45%	#894	bottom 23%
Save rate	0.080%	#559	top 48%

Among 24 @semianalysis_ posts

Score #19 of 24

Views	22.4K	#17	bottom 31%
Likes	90	#18	bottom 27%
Engagement rate	0.45%	#17	bottom 31%
Save rate	0.080%	#17	bottom 31%

Growth

Our reads cover 25 hours

Views22.4K

Age at our read8 days

Views per day of life2.9Kviews divided by days since it was posted

Gained between our reads+61views over 25 hours, about 58 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.

@semianalysis_'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 5, 2026

@SemiAnalysis_ charts API value per dollar for OpenAI and Anthropic

A scatter plot of what a dollar of ChatGPT and Claude buys drew 22.4K views and a 0.45% engagement rate.

What happened

On October 5, 2026, @SemiAnalysis_ posted a scatter plot on API value per dollar, OpenAI vs Anthropic. The account posted 1 other post that day, on GPT-6.1 Sol and Claude Opus 5.5 API value.

The numbers

The post reached 22.4K views, #695 of 1,162 AI chart posts, against a 39.9K median among AI chart posts. Its score of 37 ranked #788 of 1,162 AI chart posts and #19 of 24 @SemiAnalysis_ posts.

The lesson

At 0.45% engagement against a 0.73% median among AI chart posts, this scatter plot drew 90 likes on 22.4K views. A 5-model scatter sits at 0.080% saves, so the format is read rather than kept.

What it means

This post's #19 of 24 @SemiAnalysis_ posts and 0.45% engagement rate sit below the account's own 0.62% median. Its 22.4K views fall short of the 39.9K median among AI chart posts.

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

Data and API

11 points read off this chart

Estimated from the image 32%

Series	Group	Value	Read
OpenAI	GPT-6 Astra	8 x	estimated
OpenAI	GPT-6 Astra	13 x	estimated
OpenAI	GPT-6 Astra	13 x	estimated
Anthropic	Claude Fable 5.1	12 x	estimated
Anthropic	Claude Fable 5.1	12 x	estimated
OpenAI	GPT-6.1 Sol	10 x	estimated
OpenAI	GPT-6.1 Sol	10 x	estimated
Anthropic	Claude Opus 5.5	55 x	estimated
Anthropic	Claude Opus 5.5	55 x	estimated
Anthropic	Claude Sonnet 5.5	60 x	estimated
OpenAI	GPT-6 Astra · Plus	2 x	estimated

Max plan · API

GET https://viral-chart.com/api/posts/4cadf124a246.json
GET https://viral-chart.com/api/charts/4cadf124a246.json
GET https://viral-chart.com/api/charts/4cadf124a246.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 4cadf124a246.

Approximate values. Our two readings of this chart agreed only in part (confidence 0.32 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/4cadf124a246`	Title, publisher, date, form, point count; with a Max key, the data link	Open
GET	`/api/v1/charts/4cadf124a246/data`	Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV	Max
GET	`/api/v1/charts/4cadf124a246/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/4cadf124a246/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.