AI model ECI trends
Epoch AI's scatter plot drew 165.2K views on X: 31x @epochairesearch's median post and #289 of 1,162 AI chart posts we hold by views. Read Oct 10, 2026.
Claude Opus 5.5 has taken the top spot on the Epoch Capabilities Index (ECI) with a score of 167, narrowly ahead of GPT-6 Astra.
Why it spread
The post spread because it delivered a clear ranking story from a branded account with a polished, self-explaining scatter chart, earning 868 likes, 67 reposts, 26 quotes, 145 saves and 165,030 views, which is far above the account's typical 114 likes.
What worked
- The chart is polished and self-labelling, so viewers grasp the Claude Opus lead at 167 and the Sonnet match with Fable 5.1 at 165 without extra explanation.
- The post text states the headline plainly, naming the top spot and the narrow margin, which makes the result easy to repeat and quote.
- It comes from a branded account with a source line and top quarter source reach, giving the ranking enough credibility to be saved and shared.
What to borrow
We could frame our own chart as a single clear ranking with one named leader and one close runner-up, label the chart so it explains itself, and keep the post text to the headline result.
Careful
Do not over-read the quote rate or the saves as proof of lasting impact, and do not assume the same framing will travel as far for a less established account or a less familiar topic.
Written by our analysis model from the measured numbers above, not by Epoch AI.
Make it yours
We have not read this chart's numbers yet
Its own maker appears here once its numbers are read. Until then, these are other real charts in a similar format: each data page starts from that chart's numbers and takes yours.
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 0c0850e300ba.
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.
| Path | Returns | Plan | |
|---|---|---|---|
| GET | /api/v1/charts/0c0850e300ba | Title, publisher, date, form, point count; with a Max key, the data link | Open |
| GET | /api/v1/charts/0c0850e300ba/data | Every point with its provenance and confidence, plus the redraw spec. Add ?format=csv for CSV | Max |
| GET | /api/v1/charts/0c0850e300ba/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 |
curl -s https://viral-chart.com/api/v1/charts/0c0850e300ba/data \
-H "Authorization: Bearer $VIRALCHART_KEY"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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Questions people ask
How far did Epoch AI's "AI model ECI trends" chart travel?
165,030 views, 868 likes, 67 reposts and 145 saves on X, read Oct 10, 2026. A normal post from @EpochAIResearch gets about 68.2K views.
What kind of chart is it?
A scatter plot. Claude Opus leads ECI with Sonnet in third.
Can I use Epoch AI's chart?
Use the format, not the picture. The chart, logo and design belong to Epoch AI. ViralChart redraws the chart type with your numbers and words, and credits the original publisher.