As of April 2026, STT Is Still Useless for Real Work
It's closer to a random intent-distortion machine. As of April 2026, every commercial STT is still decisively useless for real work — and dangerous.
I applied AI speech recognition (STT) to real work.
The conclusion is clear.
As of April 2026,
every commercial STT is useless by real-world standards.
And it's dangerous.
1. First, you have to define the standard
The standard for "useful" is simple.
• It must preserve exactly what a person said
• The meaning must not change
• It must be usable without additional verification
If even one of these three breaks,
it has no value as a recording tool
2. Real-world results
I tested several STT systems:
• Naver / LG family
• Whisper / 4o family
The results were the same across the board.
• Word-level accuracy was reasonable
• Sentences even looked plausible
But the core problem is this:
the meaning isn't preserved
3. The most fatal problem: meaning reversal
Things like this actually happen:
• "Don't do it" → "It's fine to do it"
• "It's dangerous" → "It's fine"
• The conclusion itself gets recorded as its opposite
This isn't a simple error.
It's a completely different sentence
4. Why it's even more dangerous
The problem is that this output is:
• grammatically natural
• reads without any trouble
• and on the surface "looks accurate"
In other words,
it's wrong, but you don't realize it's wrong. It even distorts.
This is far more dangerous than a typo.
5. "Correction" is the problem
Current STT isn't just plain dictation. On top of that, it performs:
• sentence correction
• context inference
• generating natural-sounding phrasing
all at the same time.
The problem is that in this process:
it chooses "plausibility" over the original
6. So the conclusion is simple
Current STT is:
• unusable as a recording tool
• unusable as evidence
• unsuitable for reconstructing lectures or explanations
In other words, by real-world standards, it's useless
7. Addressing the counterargument
"Still, can't you at least use it for a first draft?"
Yes.
But that's not the value of STT:
it's because a person can go back and rewrite it
That's the only reason.
8. Final conclusion
STT is not yet a finished technology
And to put it more precisely:
In one line
As of April 2026,
STT isn't a "technology you can use" —
it's something even less than a "draft generator that requires verification."