pipecat/changelog/4330.changed.md

• Added includes_inter_frame_spaces parameter to TTSService.add_word_timestamps and _add_word_timestamps (default None). When True, downstream consumers will not inject additional spaces between tokens; None leaves each frame's own default unchanged.
• InworldTTSService now passes includes_inter_frame_spaces=True when reporting word timestamps, since Inworld tokens already include inter-word spacing.