Alex Xu engagement report
@alexxubyte - 293K followers on X
Measured over 5 original posts from a 30-day window, last computed on September 6, 2026.
Engagement
Early reading. We have captured 5 original posts for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.
A typical post picks up 976 interactions against 293K followers, an engagement rate of 0.333%. Posts are seen about 120K times each, and 0.812% of those impressions turn into an interaction. That is about 41.0% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.8 post a day over the last 30 days, with activity on roughly 50% of days. Most posts go out around 14:00 UTC, and Tuesday is the busiest day of the week. Of the 5 posts sampled, 80% carry an image or video. The account's strongest tracked post pulled 6.4K interactions, about 6.6x its own typical post. Only 5 original posts have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.
Measured over 5 original posts from a 30-day window, last computed on September 6, 2026.
Where this sits in the catalog
At 0.333%, Alex Xu sits above the 50th percentile of the 65,980 accounts in this comparison. That places it in the above the median band, which runs 0.1% to 0.499%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.002% |
| 25th percentile | 0.016% |
| 50th percentile | 0.1% |
| 75th percentile | 0.499% |
| 90th percentile | 2.09% |
| 99th percentile | 120.0% |
This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built
Posting timing
This account posts most often around 14:00 UTC, and Tuesday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 89K |
| 01:00 UTC | -2% | 90K |
| 02:00 UTC | -3% | 88K |
| 03:00 UTC | -4% | 94K |
| 04:00 UTC | -5% | 76K |
| 05:00 UTC | -4% | 75K |
| 06:00 UTC | -5% | 86K |
| 07:00 UTC | -5% | 93K |
| 08:00 UTC | -4% | 108K |
| 09:00 UTC | -4% | 124K |
| 10:00 UTC | -3% | 129K |
| 11:00 UTC | -3% | 141K |
| 12:00 UTC | -3% | 154K |
| 13:00 UTC | -3% | 167K |
| 14:00 UTC | -4% | 173K |
| 15:00 UTC | -2% | 176K |
| 16:00 UTC | -3% | 171K |
| 17:00 UTC | -3% | 159K |
| 18:00 UTC | -2% | 149K |
| 19:00 UTC | -2% | 141K |
| 20:00 UTC | -1% | 131K |
| 21:00 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 80% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 0% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | -3% | -3% to -2% | 54K |
- 80% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
- 0% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts.
- Its average post runs 116 characters, which falls in the 80 - 180 characters band. Across the catalog, posts of 80 to 180 characters run 3% below the same accounts' other posts.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Aug 18, 20266.6x their median
Hi, I’m John! I’m a L7 Senior Staff software engineer at Meta. My weird hobby is making AI Tech content on YouTube and Substack and I wanted to start sharing more here. In the past I’ve worked on Reels, Meta AI on Msgr and currently working on Threads. I also teach Agentic Coding with @bytebytego for fun on the side. Doing an AMA here to share and meet new people. 👋
- Aug 24, 20262.0x their median
WAL Street https://t.co/NaLwcxURMR
- Sep 1, 2026
How the JVM Actually Works https://t.co/Rw7t2Bxaua
- Jul 31, 2024
Last week, the ByteByteGo Newsletter passed 1 million subscribers! Just over two years ago, we started this little newsletter driven by our passion for system design and the desire to educate engineers. Writing has always been something I love, and creating ByteByteGo felt like the perfect way to combine that passion with our professional interests. The journey to this milestone has not been easy. Finding interesting topics, conducting thorough research, and writing engaging content every week took massive time and effort. But the rewarding experience and the positive feedback from readers kept us motivated to continue every week. Today, we might have become the FIRST ever tech newsletter to surpass 1 million on Substack! Thank you to everyone who has supported ByteByteGo. Your enthusiasm and feedback have been instrumental in reaching this milestone!
- Jul 20, 2026
Top 7 Ways to Reduce LLM Costs https://t.co/0LtiuUttYp
- Aug 11, 2026
9 Types of API Testing https://t.co/iZ2vyKjsXw
- Jul 29, 2026
https://t.co/XuJBoPmy3S
- Jul 31, 2026
Short-Term vs Long-Term Memory in AI Agents: What’s the difference https://t.co/hoDQh0KO6P
- Aug 18, 2026
Ollama vs. vLLM vs. SGLang: Which one do you prefer? https://t.co/NaZkXfC1Sb
- Jul 17, 2026
Which open model are you most excited about? https://t.co/jlZL4LKQU0
Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.
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Reading these numbers
A typical post picks up 976 interactions against 293K followers, an engagement rate of 0.333%. Posts are seen about 120K times each, and 0.812% of those impressions turn into an interaction. That is about 41.0% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.8 post a day over the last 30 days, with activity on roughly 50% of days. Most posts go out around 14:00 UTC, and Tuesday is the busiest day of the week. Of the 5 posts sampled, 80% carry an image or video. The account's strongest tracked post pulled 6.4K interactions, about 6.6x its own typical post. Only 5 original posts have been captured so far, fewer than the 8 posts we want behind a median before treating it as settled. Read the figures above as an early measurement of this account, not as a finished profile of it.
- What is Alex Xu's engagement rate on X?
- Alex Xu (@alexxubyte) has an engagement rate of 0.333%, based on the median interactions across 5 original posts from the last 30 days against 293,404 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.333%, Alex Xu sits above the 50th percentile of the 65,980 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
- Does @alexxubyte have real engagement?
- There is not yet enough sample to rank this account against others of its size.
- When does @alexxubyte post?
- Most posts go out around 14:00 UTC, and Tuesday is its busiest day, at roughly 0.8 posts per day across the measured window.