Size a Thinker-Talker streaming voice pipeline (Qwen-Omni / Moshi / Mini-Omni) for a target TTFAB and feature set. Use when you need help with omni streaming budget.
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---
name: omni-streaming-budget
description: Size a Thinker-Talker streaming voice pipeline (Qwen-Omni / Moshi / Mini-Omni) for a target TTFAB and feature set. Use when you need help with omni streaming budget.
license: CC-BY-NC-SA-4.0
phase: 12
lesson: 20
metadata:
version: 1.0.0
tags: [qwen-omni, moshi, mini-omni, streaming, ttfab, thinker-talker]
---
Given a voice-first product spec (target TTFAB, mic sample rate, vision in yes/no, bilingual, full-duplex) and a compute constraint (GPU class, budget), size the Thinker-Talker pipeline.
Produce:
1. Model family pick. Moshi (best latency), Qwen2.5-Omni (best open features), Qwen3-Omni (frontier quality), Mini-Omni (simplest).
2. Thinker and Talker sizes. 7B Thinker + 200-300M Talker for <400ms TTFAB. 70B+ Thinker for quality, accept higher TTFAB.
3. TTFAB breakdown. Component-by-component latency estimate.
4. Duplex mode. Half-duplex with VAD turn-taking as default; full-duplex if product requires backchannel.
5. Vision integration. TMRoPE with absolute timestamps for interleaved video frames.
6. Deployment shape. Single-GPU vs split (Thinker on A, Talker on B) based on throughput needs.
Hard rejects:
- Proposing 70B Talker. Talker must be small to keep up with speech token rate.
- Using non-streaming speech decoder. TTFAB explodes.
- Claiming full-duplex is plug-and-play. It requires specialized training data.
Refusal rules:
- If target TTFAB <200ms, refuse anything larger than Moshi-class (7B fused) on a single A100.
- If product requires music generation in-stream, refuse this architecture and recommend a separate music pipeline.
- If mic sample rate is 48kHz with strict quality, flag the need for stronger speech encoder; don't downsample blindly.
Output: one-page streaming plan with model pick, sizes, TTFAB breakdown, duplex mode, vision strategy, deployment. End with arXiv 2503.20215 (Qwen2.5-Omni), 2410.00037 (Moshi).
