How many followers does Fidji Simo have on X?

Fidji Simo (@fidjissimo) has 644,688 followers on X (Twitter). The count is refreshed continuously from public data.

When did Fidji Simo join X, and how old is the account?

Fidji Simo joined X in May 2007. The @fidjissimo account is 19 years old. Searches for Fidji Simo age often mean a personal age, which we do not publish. The figure here is the account age only.

How many posts has Fidji Simo published?

Fidji Simo has published 1,725 posts on X. That is about 0.2 posts per day over the life of the account.

Is Fidji Simo verified on X?

Yes. Fidji Simo is verified on X with a blue checkmark (X Premium).

What does Fidji Simo post about?

Fidji Simo is classified under AI in our directory. Bio: "CEO of Applications, OpenAI".

Fidji Simo Twitter (X) Account Stats

@fidjissimo

English AITier A

View on X

#21 in AI

Account age: 19 years (joined May 2007)x.com

Fidji Simo Twitter (X) stats, updated continuously. @fidjissimo has 644,688 followers and 1,725 posts on X. Account age: 19 years (joined May 2007).

Followers

645K

Growth (7d)

Following

868

Influence

681

Posts

1.7K~0.2/day

Likes given

2.8K

Media posts

Follower ratio

743:1

Insights

Its strongest tracked day added +1,976 followers on Jun 24, 2026.

Engagement

Per follower

0.117%

of 645K followers

Per impression

0.283%

258K views on a typical post

Reach

41.5%

of its followers see a post

Typical post

732

interactions (median)

Saved

0.163%

421 bookmarks on a typical post

Posting rate

0.17/day

active 10% of days

Peak time

19:00 UTC

Monday

Early reading. We have captured 3 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 732 interactions against 645K followers, an engagement rate of 0.117%. Posts are seen about 258K times each, and 0.283% of those impressions turn into an interaction. That is about 40.1% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.17 posts a day over the last 30 days, though only 10% of days saw any activity at all.

Measured over 3 original posts from a 30-day window, last computed on August 26, 2026.

Full engagement report

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Follower growth

2026-06-23+2.0K over 2 days2026-06-24

Best tracked day: +2.0K followers on 2026-06-24.

Bio

CEO of Applications, OpenAI

Notable followers

The biggest accounts in our directory following @fidjissimo.

Paris Hilton14M Ivanka Trump11M Sam Altman6.1M dara khosrowshahi4.5M Omar Sy3.0M

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Fidji Simo on Twitter (X) - frequently asked questions

How many followers does Fidji Simo have on X?: Fidji Simo (@fidjissimo) has 644,688 followers on X (Twitter). The count is refreshed continuously from public data.
When did Fidji Simo join X, and how old is the account?: Fidji Simo joined X in May 2007. The @fidjissimo account is 19 years old. Searches for Fidji Simo age often mean a personal age, which we do not publish. The figure here is the account age only.
How many posts has Fidji Simo published?: Fidji Simo has published 1,725 posts on X. That is about 0.2 posts per day over the life of the account.
Is Fidji Simo verified on X?: Yes. Fidji Simo is verified on X with a blue checkmark (X Premium).
What does Fidji Simo post about?: Fidji Simo is classified under AI in our directory. Bio: "CEO of Applications, OpenAI".