Both of these score well on privacy and mean different things by it. One controls where your data goes; the other controls whether it is kept. Which you need is not obvious until you say what you are worried about.
Two answers to the same question
tl;dv lets you choose EU or US hosting for the AI processing and uses no customer data to train its models. tl;dv scores 5 for privacy, the highest in this directory.
Read AI lets users choose whether audio and video are retained at all — the decision sits with the person in the meeting rather than an administrator — but storage is in the United States unless you negotiate otherwise. Read AI scores 3 for privacy.
If your concern is a contract clause about data residency, tl;dv answers it and Read AI does not. If your concern is that recordings of sensitive conversations should not exist afterwards, Read AI gives the people in the room a switch and tl;dv does not.
What each one publishes about the languages
Read AI enumerates twenty-six languages and documents that mixed-language meetings are not fully supported. That is an honest limitation stated in public, and it is the sort of detail that only appears once somebody has been asked.
tl;dv advertises thirty-plus languages and publishes no enumerated list, only a count — which is why it is absent from this directory's language filters. A number is not something you can check your language against.
Read AI scores 5 for coverage, the highest here, against tl;dv's 3, and adds in-person and live event capture that tl;dv does not have. tl;dv scores 4 for workflow fit against Read AI's 4 and is built around clipping moments out of a recording.
Free tiers differ in kind. Read AI stops at five meeting transcripts a month. tl;dv gives unlimited transcription, deletes free recordings after three months, and holds archive search behind a paid tier. tl;dv scores 4 for value against Read AI's 3.
Which should you choose?
Choose tl;dv if where the processing happens is a question you have to answer to somebody else, and a shallower set of notes is acceptable.
Choose Read AI if you record in person or at live events, or if letting each person decide whether their audio survives is the control that matters to you.

tl;dv
Clip-led recorder with a choice of EU or US hosting.

Read AI
Notes plus analytics on how the conversation actually went.
Specs
Ratings
Coverage
Output depth
Workflow fit
Ease of use
Privacy and control
Value
Features
Pricing
tl;dv
Read AI
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Read AI vs Fireflies.ai
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Fathom vs tl;dv
Fathom scores 5 for value and ease with unlimited free recording. tl;dv scores 5 for privacy and deletes free recordings after three months.
Comparison

Fathom vs Read AI
Fathom records unlimited meetings free; Read AI stops at five a month. Read AI scores 5 for coverage and lets users decide if audio is kept at all.