Echo's privacy policy says that when the user chooses OpenAI, Echo may send the user's transcription instructions, if they set any, along with the audio.

Checked against its source on October 26, 2026

In the source's own words

“Echo may send the following data to OpenAI: ... Your transcription instructions, if you set them in Echo.”

Echo Privacy Policy, konovalov.ai, konovalov.ai, 2026, Section on OpenAI.

What it measures: The policy lists recorded audio, any personal data spoken in it, the instructions, and request metadata as data sent to OpenAI. For xAI's Grok it lists audio and metadata, not instructions.
What it does not show: Only the instruction text the user writes is text sent to the provider. The transcript itself comes back from the provider, so this row is yes for text only.

A row of Dictation App Features Compared: Offline, Privacy, AI, as Echo Dictation, sends text to AI: 1 1 = yes, 0 = no.