Models
Anthropic
Mythos Preview vs Frontier Benchmark Trend

@EpochAIResearchX · Jun 11, 2026

Mythos Preview vs Frontier Benchmark Trend

@EpochAIResearch's line chart drew 37.7K views on X: 7.1x @epochairesearch's median post and #597 of 1,162 AI chart posts we hold by views. Read Oct 12, 2026.

Mythos Preview outperforms frontier benchmark trend

XData Line chart Claude Mythos All Anthropic modelsMythos Preview (April)Mythos Preview (Early)GPT-5.5

@EpochAIResearch: Mythos Preview vs Frontier Benchmark Trend — Published by @EpochAIResearch on X, Jun 11, 2026. Source: x.com

62/ 100

ViralChart score

Small but loved

Fewer views than the median post but a higher engagement rate: a smaller crowd that acted on it.

#422 of 1,162 AI chart posts we hold · #8 of 59 @epochairesearch 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 Small but loved quadrant, with a score rank of #422 of 1,162 AI chart posts.

Its 37.7K views sit 7.1x above the 5.3K median for @EpochAIResearch posts, ranking #11 of 59 @EpochAIResearch posts by views.

A 0.27% save rate lands at the 95th percentile among AI chart posts, #53 of 1,162 AI chart posts.

The score of 62 ranks #422 of 1,162 AI chart posts and #8 of 59 @EpochAIResearch posts.

7.1x@epochairesearch's median post

37.7K views, where @epochairesearch's typical post gets 5.3K.

top 5%save rate

0.268% of viewers bookmarked it to come back to. The median post gets 0.076%.

top 22%engagement rate

1.09% of viewers liked, reposted, quoted or replied. The median post gets 0.73%.

0.5xthe median line chart post

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

Public X numbers from our read on Oct 12, 2026. Peers: 1,162 AI chart posts we hold and 59 from @epochairesearch.

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 #422 of 1,162

Views	37.7K	#597	bottom 49%
Likes	351	#533	top 46%
Engagement rate	1.09%	#258	top 22%
Save rate	0.268%	#53	top 5%

Among 59 @epochairesearch posts

Score #8 of 59

Views	37.7K	#11	top 18%
Likes	351	#12	top 19%
Engagement rate	1.09%	#39	bottom 35%
Save rate	0.268%	#9	top 14%

Growth

One read so far

Views37.7K

Age at our read123 days

Views per day of life306views 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.

@epochairesearch'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 · Jun 11, 2026

@EpochAIResearch charts Mythos Preview against frontier benchmark trend

A line chart on Mythos Preview versus the frontier benchmark trend drew 37.7K views and a 0.27% save rate.

What happened

@EpochAIResearch posted a line chart on June 11, 2026, comparing Mythos Preview against the frontier benchmark trend. It was the account's only post that day.

The numbers

The post reached 37.7K views, #597 of 1,162 AI chart posts by views. Its score of 62 ranks #422 of 1,162 AI chart posts.

The lesson

A 0.27% save rate, at the 95th percentile among AI chart posts, shows this line chart was kept at a top-decile rate. The 37.7K views sit below the 39.9K median among AI chart posts.

What it means

At #8 of 59 @EpochAIResearch posts by score, this chart sits near the top of the account's own output. Its 37.7K views fall short of the 39.9K median among AI chart posts.

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

Updates: what @epochairesearch posted next

Data and API

28 points read off this chart

Estimated from the image 30%

Series	Group	Value	Read
Mythos Preview (April)	Frontier models (best scores at release)	141 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	145 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	145 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	149 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	149 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	152 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	152 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	155 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	155 Cyber-domain ECI	estimated
Mythos Preview (April)	Frontier models (best scores at release)	168 Cyber-domain ECI	estimated
Mythos Preview (Early)	Frontier models (best scores at release)	164 Cyber-domain ECI	estimated
Pre-Mythos trend	Other models	141 Cyber-domain ECI	estimated

Showing 12 of 28. All points, the redraw and the maker

Max plan · API

GET https://viral-chart.com/api/posts/7137133ce612.json
GET https://viral-chart.com/api/charts/7137133ce612.json
GET https://viral-chart.com/api/charts/7137133ce612.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 7137133ce612.

Approximate values. Our two readings of this chart agreed only in part (confidence 0.30 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/7137133ce612`	Title, publisher, date, form, point count; with a Max key, the data link	Open
GET	`/api/v1/charts/7137133ce612/data`	Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV	Max
GET	`/api/v1/charts/7137133ce612/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/7137133ce612/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.

More charts about Claude Mythos

Claude Mythos: Opus 4.7 Benchmark Comparison

OfficialX · AnthropicApr 16, 2026

Opus 4.7 Benchmark Comparison14.1M views · 79.6K likes

Data

Claude Mythos: Vulnerability identification and exploitation in open-source code

OfficialX · AnthropicJul 24, 2026

Vulnerability identification and exploitation in open-source code669.1K views · 2.7K likes

Data

OfficialX · AnthropicJul 24, 2026

Misaligned behavior518.2K views · 2.4K likes

Data

Claude Mythos: Claude model performance in research sessions

OfficialX · AnthropicJun 4, 2026

Claude model performance in research sessions416K views · 1.6K likes

Data

OfficialX · AnthropicApr 30, 2026

Sycophancy by model63.7K views · 170 likes

Data

OfficialBlog · AnthropicJun 30, 2026

Misaligned behavior

More from Anthropic

Anthropic stacked bar chart: Firefox Security Vulnerabilities

4.7x

Anthropic·Mar 2026

Firefox Security Vulnerabilities

3.2M views14.8K likes0.5% eng.

Data

Anthropic line chart: US GDP AI scenarios

0.4x

Anthropic·Sep 2026

US GDP AI scenarios

856.3K views1.2K likes0.2% eng.

Data

Anthropic bar chart: RL reward hacking risks

1.0x

Anthropic·Sep 2026

RL reward hacking risks

806.5K views3.2K likes0.5% eng.

Data

Claude Opus 4: Opus 4.8 benchmark comparison

OfficialX · AnthropicMay 28, 2026

Opus 4.8 benchmark comparison15.5M views · 66.3K likes

Data

Claude agents and computer use: AI Model Benchmark Comparison

OfficialX · AnthropicNov 24, 2025

AI Model Benchmark Comparison7.8M views · 18.8K likes

Data

Claude Fable 5: Claude Mythos 5 and Fable 5 Benchmark Comparison

OfficialX · AnthropicJun 9, 2026

Claude Mythos 5 and Fable 5 Benchmark Comparison6.3M views · 15.4K likes

Data

Claude Fable 5: AI Model Benchmark Comparison

OfficialX · AnthropicJul 24, 2026

AI Model Benchmark Comparison5.8M views · 10.7K likes

Data

Claude Opus 4.6: Long context MRCR v2 retrieval

OfficialX · AnthropicMar 13, 2026

Long context MRCR v2 retrieval5.7M views · 24.6K likes

Data

OfficialX · AnthropicMay 22, 2025

Claude 4 benchmarks4.3M views · 20.5K likes

Data

Questions people ask

Where does this chart come from?

@EpochAIResearch published it on Jun 11, 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.