Models
Google
Google bench 2.1 vs 4.0 performance

@SemiAnalysis_X · Sep 8, 2026

Google bench 2.1 vs 4.0 performance

@SemiAnalysis_'s table chart drew 469.8K views on X: 12x @semianalysis_'s median post and #157 of 1,162 AI chart posts we hold by views. Read Oct 13, 2026.

Google and Meta are Benchmaxxers

XData Table chart Gemini 3 All Google models GPT-6 (Astra)Fable 5.1Gemini 3.8 FlashMuse Spark 1.3

@SemiAnalysis_: Google bench 2.1 vs 4.0 performance — Published by @SemiAnalysis_ on X, Sep 8, 2026. Source: x.com

79/ 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.

#69 of 1,162 AI chart posts we hold · #1 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

It sits in the Wide but thin quadrant, at #69 of 1,162 AI chart posts.

Its 470K views are 12x this company's median post, the #1 of 24 @SemiAnalysis_ posts by views.

A score of 79 puts it at #69 of 1,162 AI chart posts and #1 of 24 @SemiAnalysis_ posts.

It was the #1 of 2 posts from this account that day, against 31.5K views for the other.

12x@semianalysis_'s median post

469.8K views, where @semianalysis_'s typical post gets 40.3K.

3.5xthe median table chart post

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

2posts from @semianalysis_ that day

Part of a run of 2 posts on Sep 8, 2026. This one was #1 of 2 by views that day.

top 30%save rate

0.115% 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 #69 of 1,162

Views	469.8K	#157	top 13%
Likes	2.6K	#110	top 9%
Engagement rate	0.64%	#675	bottom 42%
Save rate	0.115%	#352	top 30%

Among 24 @semianalysis_ posts

Score #1 of 24

Views	469.8K	#1	top 2%
Likes	2.6K	#1	top 2%
Engagement rate	0.64%	#11	top 44%
Save rate	0.115%	#11	top 44%

Growth

Our reads cover 27 hours

Views469.8K

Age at our read36 days

Views per day of life13.1Kviews divided by days since it was posted

Gained between our reads+67views over 27 hours, about 59 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 · Sep 8, 2026

@SemiAnalysis_ table on Google bench 2.1 vs 4.0

A table chart on Google bench 2.1 vs 4.0 performance drew 470K views and a 0.64% engagement rate.

What happened

On September 8, 2026, @SemiAnalysis_ posted a table chart on Google bench 2.1 vs 4.0 performance. That day the account posted 2 items, the other on DeepSWE v1.1 Model Cost vs Performance at 31.5K views.

The numbers

It reached 470K views, #157 of 1,162 AI chart posts, against a median of 39.9K views among AI chart posts. Its score of 79 ranks #69 of 1,162 AI chart posts.

The lesson

A table chart with 4 models shown drew 470K views but a 0.64% engagement rate, below the AI chart median. The chart shows Terminal-Bench 2.1 to 4.0 drops of -30.7% and -35.6%.

What it means

At #1 of 24 @SemiAnalysis_ posts by views, this table chart reached 12x the company median of 40.3K views. Its 0.64% engagement rate sits below the AI chart median, so the reach and the engagement do not match.

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

Updates: what @semianalysis_ posted next

Data and API

12 points read off this chart

Estimated from the image 97%

Series	Group	Value	Read
TERMINAL-BENCH 2.1	GPT-6 (Astra)	88.4 %	printed
TERMINAL-BENCH 4.0	GPT-6 (Astra)	57.7 %	printed
2.1 → 4.0 DROP	GPT-6 (Astra)	-30.7 %	printed
TERMINAL-BENCH 2.1	Fable 5.1	91.4 %	printed
TERMINAL-BENCH 4.0	Fable 5.1	55.8 %	printed
2.1 → 4.0 DROP	Fable 5.1	-35.6 %	printed
TERMINAL-BENCH 2.1	Gemini 3.8 Flash	89.4 %	printed
TERMINAL-BENCH 4.0	Gemini 3.8 Flash	19.1 %	printed
2.1 → 4.0 DROP	Gemini 3.8 Flash	-70.3 %	printed
TERMINAL-BENCH 2.1	Muse Spark 1.3	88.8 %	printed
TERMINAL-BENCH 4.0	Muse Spark 1.3	33.3 %	printed
2.1 → 4.0 DROP	Muse Spark 1.3	-55.5 %	printed

Max plan · API

GET https://viral-chart.com/api/posts/77fe0e1a5366.json
GET https://viral-chart.com/api/charts/a99d6fdd4cda.json
GET https://viral-chart.com/api/charts/a99d6fdd4cda.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 a99d6fdd4cda.

See the Max plan API docs

	Path	Returns	Plan
GET	`/api/v1/charts/a99d6fdd4cda`	Title, publisher, date, form, point count; with a Max key, the data link	Open
GET	`/api/v1/charts/a99d6fdd4cda/data`	Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV	Max
GET	`/api/v1/charts/a99d6fdd4cda/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/a99d6fdd4cda/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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