{
  "source_article": "https://habr.com/ru/companies/raft/articles/991844/",
  "retrieved_at": "2026-09-21",
  "provenance": "Audio published by the article author on SoundCloud and downloaded for offline playback. These are not local measurements.",
  "author_test_environment": {
    "cpu": "AMD Ryzen 5 7500F",
    "gpu": "NVIDIA GeForce RTX 5070",
    "note": "Environment and timing values are reported by the article author, not reproduced locally."
  },
  "derived_rtf_note": "Approximate RTF values in the deck divide the published generation time by the decoded duration of the linked demo. They are marked derived and are not profiler measurements. For Chatterbox the section-level CPU time is paired with the clone demo only as an explicit approximation.",
  "items": [
    {
      "file": "article-demos/higgs-audio-v2.mp3",
      "soundcloud_track": 2258615360,
      "model": "HiggsAudio v2",
      "audio_duration_s": 17.058,
      "author_cpu_s": 123.34,
      "author_gpu_s": 50.36,
      "derived_rtf_cpu": 7.231,
      "derived_rtf_gpu": 2.952
    },
    {
      "file": "article-demos/chatterbox-standard.mp3",
      "soundcloud_track": 2258624645,
      "model": "Chatterbox",
      "audio_duration_s": 7.419
    },
    {
      "file": "article-demos/chatterbox-clone.mp3",
      "soundcloud_track": 2258625179,
      "model": "Chatterbox",
      "mode": "voice clone",
      "audio_duration_s": 8.777,
      "author_section_cpu_s": 31.63,
      "derived_rtf_cpu": 3.604
    },
    {
      "file": "article-demos/espeech-reference.mp3",
      "soundcloud_track": 2258632415,
      "model": "ESpeech",
      "mode": "reference",
      "audio_duration_s": 7.079
    },
    {
      "file": "article-demos/espeech-result.mp3",
      "soundcloud_track": 2258630288,
      "model": "ESpeech",
      "audio_duration_s": 13.923,
      "author_cpu_s": 3.85,
      "author_gpu_s": 3.76,
      "derived_rtf_cpu": 0.277,
      "derived_rtf_gpu": 0.27
    },
    {
      "file": "article-demos/f5-result.mp3",
      "soundcloud_track": 2258632829,
      "model": "F5-TTS Russian",
      "audio_duration_s": 9.247,
      "author_cpu_s": 128.83,
      "author_gpu_s": 2.32,
      "derived_rtf_cpu": 13.932,
      "derived_rtf_gpu": 0.251
    },
    {
      "file": "article-demos/qwen-customvoice.mp3",
      "soundcloud_track": 2258633975,
      "model": "Qwen3-TTS CustomVoice",
      "audio_duration_s": 5.355,
      "separate_author_timing_available": false
    },
    {
      "file": "article-demos/qwen-voicedesign.mp3",
      "soundcloud_track": 2258634959,
      "model": "Qwen3-TTS VoiceDesign",
      "audio_duration_s": 9.195,
      "author_cpu_s": 40.487,
      "author_gpu_s": 15.001,
      "derived_rtf_cpu": 4.403,
      "derived_rtf_gpu": 1.631
    },
    {
      "file": "article-demos/qwen-base-result.mp3",
      "soundcloud_track": 2258636192,
      "model": "Qwen3-TTS Base",
      "audio_duration_s": 8.098,
      "separate_author_timing_available": false
    },
    {
      "file": "article-demos/silero-v5-ru.mp3",
      "soundcloud_track": 2258637839,
      "model": "Silero v5_ru",
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      "author_cpu_s": 2.62,
      "author_gpu_s": 0.071,
      "derived_rtf_cpu": 0.58,
      "derived_rtf_gpu": 0.016
    },
    {
      "file": "article-demos/xtts-v2.mp3",
      "soundcloud_track": 2258638730,
      "model": "XTTS-v2",
      "audio_duration_s": 11.363,
      "author_cpu_s": 20.65,
      "author_gpu_s": 18.54,
      "derived_rtf_cpu": 1.817,
      "derived_rtf_gpu": 1.632
    }
  ]
}