README.md

metadata

title: DriftCall Demo
emoji: 🎙️
colorFrom: pink
colorTo: indigo
sdk: gradio
sdk_version: 5.8.0
app_file: app.py
pinned: true
license: apache-2.0
short_description: Indic voice concierge — base vs trained Gemma-3n LoRA
tags:
  - gradio
  - voice
  - asr
  - tts
  - indic
  - rl
  - lora
  - gemma-3n
models:
  - unsloth/gemma-3n-E2B-it
  - DGXAI/gemma-3n-e2b-driftcall-lora

DriftCall Demo — Voice Concierge under Schema Drift

Live Gradio demo of the DriftCall RL environment. Speak a query in Hindi / Tamil / Kannada / English / Hinglish; the agent (Gemma-3n-E2B + DriftCall LoRA) plans across cab / hotel / airline / restaurant / payment vendors while mid-episode drift hits the schemas.

Pipeline

mic ──▶ faster-whisper ASR ──▶ DriftCallEnv ──▶ Gemma-3n + LoRA ──▶ Kokoro TTS ──▶ speaker
                                    ▲                  │
                                    │                  ▼
                            drift toggle        live trace panel

Models

• Base: unsloth/gemma-3n-E2B-it
• Trained adapter: DGXAI/gemma-3n-e2b-driftcall-lora
• Switch in the UI between base (untrained) and trained to A/B compare the impact of the GRPO curriculum.

Build / deploy

# from the repo root
bash deploy/demo_space/build.sh           # build deploy/demo_space/build/
bash deploy/demo_space/build.sh --push    # build + hf upload as a Space

# env vars
HF_SPACE_REPO  default: DGXAI/driftcall-demo
HF_TOKEN       required for --push

Latency budget

• ZeroGPU warm: ≤ 8 s round-trip
• A10G warm: ≤ 12 s round-trip

If a hardware probe falls outside the budget, the UI surfaces a status_msg warning instead of crashing — the 9 documented error modes (5.1–5.9 in docs/modules/deploy_demo_space.md) all return positional safe defaults.

Sources

This Space is built from deploy/demo_space/build.sh which rsyncs the canonical sources at the repo root:

• demo/app_gradio.py — Gradio app (renamed to app.py in the build)
• cells/ — env, models, drift injector, audio, …
• data/ — briefs, drift patterns, API schemas
• requirements.txt — Gradio + faster-whisper + Kokoro + unsloth + peft