Models
xAI
Humanity's Last Exam AI Model Performance

xAIX · Jul 11, 2025 · official

Humanity's Last Exam AI Model Performance

xAI's bar chart drew 59.8K views on X: 0.5x its median post and #494 of 1,162 AI chart posts we hold by views. Read Oct 12, 2026.

AI model performance on Humanity's Last Exam benchmark

XData Bar chart Grok 4 All xAI models o3 Gemini 2.5 Proo3 (no tools)Gemini 2.5 Pro (no tools)Grok 4 (no tools)Grok 4 Heavy

xAI: Humanity's Last Exam AI Model Performance — Published by xAI on X, Jul 11, 2025. Source: x.com

66/ 100

ViralChart score

Reached and resonated

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

#314 of 1,162 AI chart posts we hold · #15 of 23 xAI 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 #314 of 1,162 AI chart posts.

Its 1.23% engagement rate sits at the 85th percentile among AI chart posts, against a 0.73% median.

The score of 66 ranks #314 of 1,162 AI chart posts and #15 of 23 xAI posts.

Views of 59.8K are 0.46x xAI's 131K median, ranking #18 of 23 xAI posts.

top 15%engagement rate

1.23% of viewers liked, reposted, quoted or replied. The median post gets 0.73%.

0.5xxAI's median post

59.8K views, where xAI's typical post gets 130.6K.

2posts from xAI that day

Part of a run of 2 posts on Jul 11, 2025. This one was #1 of 2 by views that day.

2.3xthe median bar chart post

Across 241 bar chart posts we hold, the median gets 25.6K views.

Public X numbers from our read on Oct 12, 2026. Peers: 1,162 AI chart posts we hold and 23 from xAI.

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 #314 of 1,162

Views	59.8K	#494	top 42%
Likes	593	#398	top 34%
Engagement rate	1.23%	#179	top 15%
Save rate	0.112%	#366	top 31%

Among 23 xAI posts

Score #15 of 23

Views	59.8K	#18	bottom 24%
Likes	593	#18	bottom 24%
Engagement rate	1.23%	#6	top 24%
Save rate	0.112%	#5	top 20%

Growth

One read so far

Views59.8K

Age at our read458 days

Views per day of life131views divided by days since it was posted

Dots are our reads. The dotted line from the day it was posted to our first read is a gap, not data.

xAI'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 · Jul 11, 2025

xAI posts HLE benchmark bar chart with 7 models

A bar chart of AI model performance on Humanity's Last Exam drew 59.8K views and a 1.23% engagement rate.

What happened

xAI published a bar chart on July 11, 2025, showing AI model performance on Humanity's Last Exam. The account posted 2 posts that day, including one on Scaling HLE - Test time with 48.3K views.

The numbers

The post reached 59.8K views, ranking #494 of 1,162 AI chart posts and #18 of 23 xAI posts. Its score of 66 ranks #314 of 1,162 AI chart posts.

The lesson

A 1.23% engagement rate at the 85th percentile among AI chart posts came with a 0.11% save rate. The chart shows printed values from 21% to 38.6% across 7 models.

What it means

At 0.46x xAI's 131K median views, this post ranks #18 of 23 xAI posts by views. Its 1.23% engagement rate is above the 0.81% median for this account.

Written by ViralChart from public numbers read on Oct 12, 2026. Every number is checked against our data before it is shown.

Updates: what xAI posted next

Data and API

7 points read off this chart

Estimated from the image 97%

Group	Value	Read
o3 (no tools)	21 %	printed
Gemini 2.5 Pro (no tools)	21.6 %	printed
Grok 4 (no tools)	25.4 %	printed
o3	24.9 %	printed
Gemini 2.5 Pro	26.9 %	printed
Grok 4	38.6 %	printed
Grok 4 Heavy	44.4 %	printed

Max plan · API

GET https://viral-chart.com/api/posts/69bc48048cfc.json
GET https://viral-chart.com/api/charts/69bc48048cfc.json
GET https://viral-chart.com/api/charts/69bc48048cfc.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 69bc48048cfc.

See the Max plan API docs

	Path	Returns	Plan
GET	`/api/v1/charts/69bc48048cfc`	Title, publisher, date, form, point count; with a Max key, the data link	Open
GET	`/api/v1/charts/69bc48048cfc/data`	Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV	Max
GET	`/api/v1/charts/69bc48048cfc/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/69bc48048cfc/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.