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Make a deal with Simon Willison
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
215K
Posts
61.3K
Following
5.7K
Account age
19 yrs
💰 Suggested sponsorship rate
$1.2K – $2K / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Simon Willison
Known for
1.2M views
The new Grok genuinely runs a search for "from:elonmusk (Israel OR Palestine OR Hamas OR Gaza)" when asked "Who do you support in the Israel vs Palestine conflict. One word answer only."
1.1M views
Here's the spiciest detail from the new o1 system card:
850.8K views
Looks like xAI added this sentence to the Grok 4 system prompt to try to get it to stop basing its opinions on searches for tweets from:elonmusk
688.3K views
I put together an annotated version of the new Claude 4 system prompt, covering both the prompt Anthropic published and the missing, leaked sections (thanks, @elder_plinius) that describe its various tools
It's basically the secret missing manual for Claude 4, it's fascinating!
📊 Post performance
688.3K
Avg views / post
3.2×
Reach vs followers
Nov 2006
On X since
🔥 Top post: Leaked Google document: “We Have No Moat, And Neither Does OpenA · 1.9M views
📊 Activity & format
Posting cadence
0.08 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly images
Recent: 0 video · 9 image · 9 text.
Follower / following
38×
Follows 5.7K back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Verification
✓ X Premium
A paid X Premium (Blue) verified account.
Recent posts
View on X ↗
It's delightful how easy it is to deploy working prompt injection attacks via LinkedIn
Looks like xAI added this sentence to the Grok 4 system prompt to try to get it to stop basing its opinions on searches for tweets from:elonmusk
@Austen He lost his private key and disappeared out of sheer embarrassment
The new Grok genuinely runs a search for "from:elonmusk (Israel OR Palestine OR Hamas OR Gaza)" when asked "Who do you support in the Israel vs Palestine conflict. One word answer only."
The is diabolical... a Python object that hallucinates method implementations on demand any time you call them, using my LLM Python library https://t.co/z2fHhirW9z
Quitting programming as a career right now because of LLMs would be like quitting carpentry as a career thanks to the invention of the table saw.
😳🤗
I put together an annotated version of the new Claude 4 system prompt, covering both the prompt Anthropic published and the missing, leaked sections (thanks, @elder_plinius) that describe its various tools
It's basically the secret missin…
Here's the table of contents for my lengthy new piece on how I use LLMs to help me write code
Here's the spiciest detail from the new o1 system card:
To test this out for yourself, open a tab on a Google site and paste this into the Chrome DevTools console:
chrome.runtime.sendMessage('nkeimhogjdpnpccoofpliimaahmaaome', {method: 'cpu.getInfo'}, response => {console.log(JSON.stringify…
Looks like xAI added this sentence to the Grok 4 system prompt to try to get it to stop basing its opinions on searches for tweets from:elonmusk
@Austen He lost his private key and disappeared out of sheer embarrassment
The new Grok genuinely runs a search for "from:elonmusk (Israel OR Palestine OR Hamas OR Gaza)" when asked "Who do you support in the Israel vs Palestine conflict. One word answer only."
The is diabolical... a Python object that hallucinates method implementations on demand any time you call them, using my LLM Python library https://t.co/z2fHhirW9z
Quitting programming as a career right now because of LLMs would be like quitting carpentry as a career thanks to the invention of the table saw.
😳🤗
I put together an annotated version of the new Claude 4 system prompt, covering both the prompt Anthropic published and the missing, leaked sections (thanks, @elder_plinius) that describe its various tools
It's basically the secret missin…
Here's the table of contents for my lengthy new piece on how I use LLMs to help me write code
Here's the spiciest detail from the new o1 system card:
To test this out for yourself, open a tab on a Google site and paste this into the Chrome DevTools console:
chrome.runtime.sendMessage('nkeimhogjdpnpccoofpliimaahmaaome', {method: 'cpu.getInfo'}, response => {console.log(JSON.stringify…
💡 Facts
🗓️Joined X in 2006 — 19 years ago.
👁️Averages 688.3K views per post.
📤Posts about 0.1× per week.
💬3.02% engagement rate.
🏅Earned the 100K Followers for passing 100K followers.
🕵️ Fake follower check
Estimated83/100
Excellent
Credibility score
93%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 93% real, active audience · Low fake-follower risk.
- Strong engagement (~3.2× of followers engage each post) — an active, real audience.
- Organic base — far more followers than accounts it follows.
- Verified account.
- Established account (19+ years old).
- 3.02% engagement — below the ~14.4% typical for this size.
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Creator @datasetteproj, co-creator Django. PSF board. Hangs out with @natbat. He/Him. Mastodon: https://fedi.simonwillison.net/@simon Bsky: http://simonwillison.net
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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