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Matt Clifford

@matthewclifford · London · joined 09 Feb 2009

@AnthropicAI. Co-founder @join_ef; Chair @ARIA_Research.

41 744Followers
2 160Following
16 721Posts total
1.2MViews on collected posts

Against accounts of the same size

7 posts from the last 90 days, next to the 10K–100K follower range. shown widely, but few of those viewers react.

Median views155 672this account2 896median for 10K–100K
Reach, %372.92%this account9.51%median for 10K–100K
Engagement, %0.68%this account1.56%median for 10K–100K
MetricThis accountMedian for 10K–100KRatio
Median views per post155 6722 89653.8×
Reach (views ÷ followers)3.7× audience9.51%39.2×
Engagement rate0.68%1.56%0.44×

Others in this range →   Compare with another account →   How these benchmarks are built →

Growth & engagement

How the posts we collected actually performed: views and reaction rate post by post, what the audience did with them, and where the follower count goes.

Views per post

102.1K11 Mar
360.3K14 Aug
14.9K
155.7K20 Aug
14.4K
176.8K21 Aug
11K
399.2K2 Sep

Last 8 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.64%11 Mar
0.60%14 Aug
0.75%
0.23%20 Aug
0.97%
0.36%21 Aug
0.68%
0.72%2 Sep

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.56%.

What the audience does

Likes78.8%5 828 in total
Reposts6.3%465 in total
Replies6.2%461 in total
Quotes3.2%237 in total
Bookmarks5.5%407 in total

Share of every reaction we collected for this account. Replies mean argument, reposts mean endorsement, bookmarks mean the post was worth keeping.

The follower curve appears once this account has two daily snapshots — we take one a day, and this one is on its first.

Latest posts

Some personal news: I'm joining @AnthropicAI as Managing Director, International Affairs, leading the company's work with governments outside North America 399.2K views · 2.5K likes · 83 reposts · 238 replies 02 Sep 2026 A superb appointment! AISI has become a vital institution in AI; I can’t imagine anyone better than Henry to lead it. He combines deep government experience with true founder energy at a critical moment in AI. Bravo! 11K views · 74 likes · 0 reposts · 1 replies 21 Aug 2026 The UK’s AI Security Institute is an organisation close to my heart. Back in 2023 I was involved in its conception and creation. It’s gone on to do incredible things. A genuinely world leading org that shatters the myth that government can’t do things. So I couldn’t be more 176.8K views · 494 likes · 45 reposts · 74 replies 21 Aug 2026 Callosum is one of the most ambitious companies I’ve worked with at @join_ef - incredible to see them raise $100m just a year after demo day. Testament to the scale of their opportunity and the speed of their execution - amazing work @achterbrain and @DanAkarca! 14.4K views · 124 likes · 13 reposts · 3 replies 20 Aug 2026 Today we announce our $100M seed round to redefine how humanity computes in AI's next chapter. The future of compute and AI is heterogeneous. Callosum is building it: https://t.co/t5KnOE0Sos 155.7K views · 252 likes · 44 reposts · 19 replies 20 Aug 2026 I’m very excited about the Inherent team - this paper gives a glimpse of what they’ve been working on…👇 14.9K views · 104 likes · 4 reposts · 3 replies 14 Aug 2026 1/ Today, we introduce Faraday, a 27B-parameter AI Scientist that extends the capabilities of coding agents with a layer of scientific intuition. Trained via long-horizon RL, Faraday outperforms Claude Opus 4.8 and GPT-5.5 on the task of replicating research papers. 🧵 https://t.c 360.3K views · 1.8K likes · 228 reposts · 76 replies 14 Aug 2026 We’re excited to announce that @join_ef has raised $200m of fresh capital, including $130m into our management company at a unicorn valuation, to be the natural home of the world’s most ambitious people in the Age of Entrepreneurship 🧵 https://t.co/Mw0uFQSpTd 102.1K views · 538 likes · 48 reposts · 47 replies 11 Mar 2026

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