Architecture Overview · Park Whisperer Platform

Multi-Model Content Quality Architecture

Routes content generation through 4 AI models — Phi-3 Mini classification, Phi-4-mini fallback, Claude Haiku synthesis, Claude Sonnet formatting — with SHA-256-controlled gradual SLM rollout and a 3-layer prompt isolation system.

4 AI Models · 3 PassesClaude + Phi SLMSHA-256 Gradual Rollout

Click any component to explore it in the full case study.

Input A
Pre-Fetch Data Pack
Same pre-fetch layer as SLM pipeline — all knowledge queries and tool calls resolved before generation. Multi-turn conversation history (4 turns max, 500 chars each).
Pre-fetch · 4-turn history
Input B
Per-Pipeline Cosmos Prompts
3-layer prompt architecture: Layer 1 (static identity/safety contract in code), Layer 2 (voice/tone per pipeline in Cosmos, portal-editable), Layer 3 (platform format contracts, hardcoded fallback).
3-layer prompt system
Multi-Model Routing + 3-Pass Generation
Classifier
Phi-3 Mini SLM
Query intent → retrieval strategy. Confidence gate ≥ 0.85. Gradual rollout via SHA-256 routing (0% → 100% traffic control).
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Fallback
Phi-4-mini
If confidence < 0.85 or timeout → Phi-4-mini-instruct via Azure OpenAI. classification_source flag tracked.
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Pass 1
Claude Haiku
Tool calls + agentic loop. Data synthesis. temperature=0 for format fidelity.
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Pass 2
Claude Sonnet
Platform formatting (Facebook/Instagram/Threads/Blog). Applies Layer 2 voice/tone from Cosmos.
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Pass 3
Claude Sonnet
Reels script generation. HOOK + SEGMENT_1 + CTA + NARRATION. Word count enforced.
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Gradual SLM Rollout + Model Override Architecture
SHA-256 routing enables 0–100% traffic shift to SLM classification without code deploys. Fallback audit tracks slm_fallback_low_confidence and slm_fallback_error events. Model ID env-var overrides per pass allow hot-swapping models.
SHA-256 rollout (0% → 100%)classification_source flagslm_fallback audit eventsCLAUDE_MODEL_ID env overridestemperature=0 (format fidelity)3-layer prompt isolation
4
AI models in pipeline
3
Generation passes
10
Pipeline types
5+
Publishing platforms
StackPythonClaude Haiku 4.5 (Pass 1)Claude Sonnet 4.5 (Pass 2–3)Phi-3 Mini (classifier)Phi-4-mini (fallback)AWS BedrockAzure OpenAILangChainCosmos DB prompts