docs: Add data flow documentation for custom storage and models #878
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Adds comprehensive documentation explaining data flow when using custom bucket storage and custom LLM configurations in Vapi. Includes: - Mermaid diagrams for default, custom storage, custom LLM, and combined flows - Data storage summary table - Use case recommendations - Cross-references to related documentation Addresses customer inquiries about what data is passed and stored in Vapi vs their own systems. VAP-11220 Co-Authored-By: Claude <noreply@anthropic.com>
Adds the new data flow documentation page to the Security and privacy section in the docs navigation. VAP-11220 Co-Authored-By: Claude <noreply@anthropic.com>
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…ture - Added complete voice pipeline architecture diagram with all components - Documented all pipeline stages: Transport, STT, Orchestration, LLM, TTS - Added "bring your own" support matrix for each component - Clarified orchestration layer is Vapi-proprietary (ephemeral processing) - Added custom models data flow diagram - Expanded artifacts storage summary with all artifact types - Added provider support tables for STT, LLM, and TTS - Improved use case recommendations VAP-11220 Co-Authored-By: Claude <noreply@anthropic.com>
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Changes based on feedback: 1. Simplified "Complete Pipeline Flow" diagram - removed inner boxes from STT, LLM sections, removed Post-Processing 2. Updated STT table with correct BYOK support based on credential.types.ts (Deepgram, Gladia, AssemblyAI, Speechmatics, Google, Azure all support BYOK) 3. Removed "Custom Server" column from component tables, added notes with links to custom integration docs instead 4. Renamed "Custom API Keys" to "Bring your own API Key" throughout 5. Ensured consistent naming across all diagrams (Transport, Transcriber, Orchestration, LLM, Voice) 6. Fixed custom models diagram layout - user at top, custom servers at bottom VAP-11220 Co-Authored-By: Claude <noreply@anthropic.com>
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- Convert Speech-to-Text provider table to bullet list format - Convert Language Model provider table to bullet list format - Convert Text-to-Speech provider table to bullet list format - Maintain custom voice references (confirmed supported via CustomVoice class) VAP-11220
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- Fix Custom TTS link to customization/custom-voices/custom-tts - Update Custom Storage Data Flow: rename "Vapi Metadata" to "Vapi Storage" with Product Usage Metrics and System Logs - Add clear distinction between System Logs (internal) and Call Logs (customer-facing) - Ensure consistent naming across all diagrams - Add Vapi Storage to Custom Models Data Flow diagram - Fix BYOI Summary: Transport BYOK via Twilio/Telnyx/Vonage, Storage in BYOK column - Fix Artifacts Storage Summary: Custom Storage as Yes/No, add HIPAA disclaimer Co-Authored-By: Claude <noreply@anthropic.com>
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🌿 Preview your docs: https://vapi-preview-dec7ad92-81c4-42b9-9d57-660b9793435b.docs.buildwithfern.com |
stevenbdf
approved these changes
Jan 15, 2026
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Summary
Changes
fern/security-and-privacy/data-flow.mdxfern/docs.ymlDocumentation Covers
Pipeline Components
Artifacts Documented
"Bring Your Own" Support Matrix
Diagrams Included
Test plan
Related
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