@@ -150,9 +150,7 @@ The table below lists all feature keys that can appear in a language's `features
 | `glossary`                   | source + target           | `translate_text`, `translate_document`, `voice`           | Language can be used with a glossary to enforce specific terminology. Both the source and target language must support this for a glossary to be usable with a given pair.                                                |
 | `tag_handling`               | source + target           | `translate_text`, `translate_document`                    | Language supports tag-aware translation, preserving markup structure (e.g. HTML, XML) in the output.                                                                                                                      |
 | `transcription`              | source                    | `voice`                                                   | Language supports transcription from audio to text.                                                                                                                                                                        |
-| `transcription_external`     | source                    | `voice`                                                   | Like `transcription`, but relies on external service providers.                                                                                                                                                            |
 | `translated_speech`          | target                    | `voice`                                                   | Language supports conversion from translated text to audio output.                                                                                                                                                         |
-| `translated_speech_external` | target                    | `voice`                                                   | Like `translated_speech`, but relies on external service providers.                                                                                                                                                        |
 | `tone`                       | target                    | `write`                                                   | Language supports tone selection (e.g. confident, diplomatic, enthusiastic).                                                                                                                                               |
 | `writing_style`              | target                    | `write`                                                   | Language supports writing style selection (e.g. academic, casual, business).                                                                                                                                               |