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esh-pfi-infrastructure/stacks/kyutai-tts/.env.example
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vh 16d018ff96 stacks/{fish-s2,voxtral,kyutai-tts}: three new TTS deploys for irv-ml1 quality A/B
Adds the three premier 2026 TTS releases we missed during the original
fleet build-out (early April), all licensed for self-host:

* Fish Audio S2-Pro (port 8195, GPU 1 / A6000) — released 2026-03-09.
  4B dual-AR (Slow + Fast) trained on 10M+ hours / 80+ languages.
  Headline: 15,000+ paralinguistic / emotion tags via natural language
  ([laugh] [whispers] [super happy] etc.) — a step-function over
  Chatterbox Turbo's 9 fixed tags. 91.61% paralinguistic win rate on
  EmergentTTS-Eval. ~150 ms streaming TTFB, voice cloning, MIT-style
  open. ~17 GB VRAM.

* Voxtral TTS (port 8197, GPU 1 / A6000) — Mistral, released 2026-03-28.
  4B open-weight, 70 ms model latency, 9.7× realtime. 68.4% blind A/B
  win rate vs ElevenLabs Flash v2.5 in cloning. 8 languages
  (EN/FR/DE/ES/IT/PT/NL/HI). Served via vLLM-Omni (Mistral's partner
  serving stack) — published Docker image, no local build. ~16 GB VRAM.
  CC BY-NC license — personal/research use only; flagged in README.

* Kyutai TTS (port 8198, GPU 0 / 3090) — kyutai/tts-1.6b-en_fr.
  Trained on 2.5M hours from the Moshi/Mimi team. Claimed 220 ms in
  solo setup, 32 simultaneous streams under 350 ms on L40. Kyutai's
  official deploy is Rust + websockets only; using NillPointer's
  community OpenAI-compat wrapper to bridge to /v1/audio/speech so
  it slots into the same bench harness. ~4-6 GB VRAM.

Each stack: compose.yaml (build context, env, volumes, healthcheck,
homepage label), .env.example (all tunables documented), README.md
(why it exists, headline numbers, API, deploy + hardware notes).
Playbooks at playbooks/deploy-{fish-s2,voxtral,kyutai-tts}.yaml are
idempotent in the same shape as the existing deploy-vibevoice /
deploy-chatterbox playbooks.

Port allocations on irv-ml1 after this lands: 8188 ComfyUI, 8190
CosyVoice, 8191 Qwen3-TTS, 8192 IndexTTS-2, 8193 Kokoro, 8194
VibeVoice, 8195 Fish, 8196 Chatterbox, 8197 Voxtral, 8198 Kyutai,
8765 Parakeet ASR.
2026-04-27 22:40:10 -07:00

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# Kyutai TTS stack tunables. Copy to `.env` on irv-ml1 before
# deploying.
# ── build pin ────────────────────────────────────────────────────────
# SHA of NillPointer/Kyutai-TTS-Server to build from. Use the FULL
# 40-char SHA — docker buildx's git source resolver doesn't accept
# short hashes.
KYUTAI_TTS_SHA=main
# Local image tag — bump when you change build context to force a
# fresh layer build.
KYUTAI_TTS_TAG=v1
# Kyutai model on HF. Available variants:
# kyutai/tts-1.6b-en_fr — bilingual EN/FR, 1.6B params (default)
# kyutai/pocket-tts — 100M, CPU-realtime, EN-only (lighter alt)
KYUTAI_TTS_MODEL=kyutai/tts-1.6b-en_fr
# ── network ──────────────────────────────────────────────────────────
KYUTAI_TTS_PORT=8198
KYUTAI_TTS_BIND=0.0.0.0
# ── runtime / GPU ────────────────────────────────────────────────────
# GPU pinning. "0" = RTX 3090 (24 GB), "1" = RTX A6000 (48 GB).
# 1.6B Kyutai needs ~4-6 GB practical, fits comfortably on either.
# Pinned to GPU 0 (3090) by default since the A6000 is hosting the
# heavier Fish S2-Pro / Voxtral.
KYUTAI_TTS_GPU_DEVICES=0
# ── persistent storage on the host ───────────────────────────────────
KYUTAI_TTS_CACHE_DIR=/worktank/kyutai-tts/hf_cache
KYUTAI_TTS_VOICES_DIR=/worktank/kyutai-tts/voices