“Grok (their main product) doesn’t have the users that ChatGPT has, and it doesn’t have the prestige that Google’s Gemini seems to be racking up.”
Our reading:
Grok, xAI's main product, does not have the users that ChatGPT has, and does not have the prestige that Google's Gemini seems to be racking up.
Assessment: Supported
What happened
Was it true for the period described?
Outcome: Supported
The evidence matches what they said.
Judged on a plain reading. They named no measure, so we used the reading a typical informed reader would take. It is spelled out under “How we judged it”.
Evidence up to . Checked .
Why
The firm audience comparison is supported by Apptopia's January figures: ChatGPT held 45.3% of the measured daily app-user market, compared with Grok's 15.2%. Both figures use the same provider and comparison period. This supports the ordinary reading that Grok had a smaller audience, within the measurement's coverage. The hedged prestige remark is not graded.
Caveats
- This is support for the audience clause only.
- App audience estimates do not establish exact worldwide, all-channel user totals.
- No benchmark ranking or popularity measure has been substituted for prestige.
Evidence (2 items)
Supports the claim: Apptopia,
ChatGPT has fallen from 69.1% to 45.3%.
Why it matters: The paragraph compares January 2025 with January 2026. ChatGPT's January 2026 share of the measured chatbot app audience exceeds Grok's share in e2.
- Publisher
- Apptopia
- Kind of source
- Independent measurement
- About events on
- Published
Supports the claim: Apptopia,
Last month, Grok’s DAU market share hit its highest point yet at 15.2%.
Why it matters: Grok remained below ChatGPT in the same daily active app-user comparison, despite reaching its own highest share.
- Publisher
- Apptopia
- Kind of source
- Independent measurement
- About events on
- Published
How we judged it
- Kind of claim
- Observation
- Deadline
- None given. We don’t add one.
Conditions
- Gemini 'seems to be' racking up prestige (their words)
Where we had to interpret
- The firm audience claim means Grok has fewer active users than ChatGPT. It does not mean the products have different individual users.
- Use January 2026, the latest complete calendar month before the post, for the ongoing audience comparison.
- Comparable active-user measurements can test the audience comparison, with their platform and geographic limits disclosed.
- The prestige comparison is hedged by 'seems to be'. It is not a firm benchmark claim and is excluded from the outcome grade. Support for the audience clause does not establish the prestige clause.
Right if: Comparable active-user evidence for January 2026 shows ChatGPT ahead of Grok.
Wrong if: Comparable active-user evidence for January 2026 shows Grok matching or exceeding ChatGPT.
We wrote this test after the outcome was known.
We found 8 claims in this post. See them all.
Full record
Source and dates
Marcus on AI, Four theories about the SpaceX - xAI merger, paragraph 5.
- Said
- We read the source
- live page, full text, public
- Evidence up to
- Checked
We read this wording on 2026-10-28. The post may have been edited after 2026-02-03.
Where it was said (1)
Said once in the posts we read.
: Marcus on AI, Four theories about the SpaceX - xAI merger
Grok (their main product) doesn’t have the users that ChatGPT has, and it doesn’t have the prestige that Google’s Gemini seems to be racking up.
- Where
- paragraph 5
- Published
- 2026-02-03
- We read it
- , live page
- Access
- full text, public
History
Versions
- Current: Supported. Evidence up to 2026-10-28.
What happened to this record
PublishedBy us
Published after both AI reviews and the final check passed.
Held backBy us
A reviewer said our test wasn’t fair to what was actually said.