VapiAI · stephenvapiai · Sep 10, 2026 · Sep 10, 2026
diff --git a/fern/advanced/sip/sip-didww.mdx b/fern/advanced/sip/sip-didww.mdx
@@ -1,6 +1,6 @@
 ---
 title: DIDWW SIP integration
-subtitle: Connect DIDWW SIP trunks to Vapi so your assistants can receive calls, place outbound calls, and transfer active calls with SIP REFER.
+subtitle: Connect DIDWW SIP trunks to Vapi so your assistants can receive calls, place outbound calls, and transfer active calls with SIP REFER
 description: Set up DIDWW SIP trunking with Vapi. Create inbound and outbound trunks, allowlist signaling IPs, and configure authenticated SIP REFER call transfers.
 slug: advanced/sip/didww
 ---

diff --git a/fern/assistants/call-timeout-settings.mdx b/fern/assistants/call-timeout-settings.mdx
@@ -1,6 +1,6 @@
 ---
 title: Call timeout settings
-subtitle: End inactive calls and limit the total duration of each call.
+subtitle: End inactive calls and limit the total duration of each call
 description: Configure silence and maximum-duration timeouts for assistants, distinguish inactivity from total call duration, and troubleshoot timeout call endings.
 ---
 

diff --git a/fern/assistants/end-call-phrases.mdx b/fern/assistants/end-call-phrases.mdx
@@ -1,6 +1,6 @@
 ---
 title: End call phrases
-subtitle: End calls when an assistant says a configured phrase.
+subtitle: End calls when an assistant says a configured phrase
 description: End call phrases let assistants end calls after saying configured text. Choose reliable phrases and prevent unintended transcript matches during calls.
 ---
 

diff --git a/fern/assistants/examples/inbound-support.mdx b/fern/assistants/examples/inbound-support.mdx
@@ -1,6 +1,6 @@
 ---
 title: Inbound customer support
-subtitle: Build a banking customer support agent that can process inbound phone calls and assist with common banking issues.
+subtitle: Build a banking customer support agent that can process inbound phone calls and assist with common banking issues
 slug: assistants/examples/inbound-support
 description: Build a voice AI banking support agent with tools for account lookup, balance and transaction retrieval.
 ---

diff --git a/fern/assistants/examples/support-escalation.mdx b/fern/assistants/examples/support-escalation.mdx
@@ -1,6 +1,6 @@
 ---
 title: Customer support escalation system
-subtitle: Build intelligent support routing using assistants that escalate calls based on customer tier, issue complexity, and agent expertise.
+subtitle: Build intelligent support routing using assistants that escalate calls based on customer tier, issue complexity, and agent expertise
 slug: assistants/examples/support-escalation
 description: Build a voice AI customer support system with dynamic escalation that routes calls based on customer data, issue type, and real-time agent availability using transfer tools and webhooks.
 ---

diff --git a/fern/assistants/examples/voice-widget.mdx b/fern/assistants/examples/voice-widget.mdx
@@ -2,7 +2,7 @@
 title: Web Snippet
 subtitle: >-
   Easily integrate the Vapi Voice Widget into your website for enhanced user
-  interaction.
+  interaction
 slug: assistants/examples/voice-widget
 ---
 

diff --git a/fern/assistants/keypad-input-settings.mdx b/fern/assistants/keypad-input-settings.mdx
@@ -1,6 +1,6 @@
 ---
 title: Keypad input settings
-subtitle: Configure how an assistant collects keypad input from callers.
+subtitle: Configure how an assistant collects keypad input from callers
 description: Keypad input settings let assistants collect caller-entered digits. Configure timeouts and delimiters for menus, codes, and account information during calls.
 ---
 

diff --git a/fern/assistants/model-intelligence/metrics-methodology.mdx b/fern/assistants/model-intelligence/metrics-methodology.mdx
@@ -1,6 +1,6 @@
 ---
 title: Performance metrics and methodology reference
-subtitle: See how Vapi sources and calculates latency, cost, and quality metrics.
+subtitle: See how Vapi sources and calculates latency, cost, and quality metrics
 description: The performance metrics reference explains how Vapi sources and calculates latency, cost, and quality data for each supported transcriber, model, and voice.
 slug: assistants/model-intelligence/metrics-methodology
 ---

diff --git a/fern/assistants/model-intelligence/overview.mdx b/fern/assistants/model-intelligence/overview.mdx
@@ -1,6 +1,6 @@
 ---
 title: Model Intelligence for transcribers, models, and voices
-subtitle: Choose assistant components with curated Model Presets and Performance Metrics.
+subtitle: Choose assistant components with curated Model Presets and Performance Metrics
 description: Model Intelligence helps you choose transcribers, models, and voices with curated presets and weekly refreshed performance metrics for latency, cost, and quality.
 slug: assistants/model-intelligence/overview
 ---

diff --git a/fern/assistants/model-intelligence/presets.mdx b/fern/assistants/model-intelligence/presets.mdx
@@ -1,6 +1,6 @@
 ---
 title: Model Presets for transcribers, models, and voices
-subtitle: Configure an assistant's transcriber, model, and voice with one preset.
+subtitle: Configure an assistant's transcriber, model, and voice with one preset
 description: Model presets optimize for balanced performance, reasoning, low latency, or low cost. Learn when to use each preset and how to apply or customize its configuration.
 slug: assistants/model-intelligence/presets
 ---

diff --git a/fern/assistants/model-intelligence/understanding-cost.mdx b/fern/assistants/model-intelligence/understanding-cost.mdx
@@ -1,6 +1,6 @@
 ---
 title: How voice agent component costs and estimates work
-subtitle: Learn what drives costs across the transcriber, model, and voice.
+subtitle: Learn what drives costs across the transcriber, model, and voice
 description: Understand how Vapi estimates transcriber, model, and voice costs per minute, including prompt caching assumptions and the effects of conversation history.
 slug: assistants/model-intelligence/understanding-cost
 ---

diff --git a/fern/assistants/model-intelligence/understanding-latency.mdx b/fern/assistants/model-intelligence/understanding-latency.mdx
@@ -1,6 +1,6 @@
 ---
 title: How voice-to-voice latency works in voice agents
-subtitle: Learn what voice-to-voice latency measures and why capable models respond more slowly.
+subtitle: Learn what voice-to-voice latency measures and why capable models respond more slowly
 description: Understand voice-to-voice latency, the components included in Vapi performance metrics, and how model capability, endpointing, and transport affect response time.
 slug: assistants/model-intelligence/understanding-latency
 ---

diff --git a/fern/assistants/retrieve-call-artifacts.mdx b/fern/assistants/retrieve-call-artifacts.mdx
@@ -1,6 +1,6 @@
 ---
 title: Retrieve call artifacts
-subtitle: Download recordings and call logs from Vapi's private storage using authenticated, short-lived URLs.
+subtitle: Download recordings and call logs from Vapi's private storage using authenticated, short-lived URLs
 description: How to download call recordings and logs from Vapi's private storage using your Private API Key and short-lived, authenticated redirect URLs.
 slug: assistants/retrieve-call-artifacts
 ---

diff --git a/fern/billing/manage-billing-and-credits.mdx b/fern/billing/manage-billing-and-credits.mdx
@@ -1,6 +1,6 @@
 ---
 title: "Manage pay-as-you-go billing and credits"
-subtitle: "Add a payment method, buy credits, configure auto reload, and download billing records."
+subtitle: "Add a payment method, buy credits, configure auto reload, and download billing records"
 description: "Manage pay-as-you-go billing in the Vapi Dashboard: add a payment method, buy credits, configure auto reload, and download PDF statements and invoices. See Vapi pricing for rates."
 slug: billing/manage-billing-and-credits
 ---

diff --git a/fern/billing/purchase-call-concurrency.mdx b/fern/billing/purchase-call-concurrency.mdx
@@ -1,6 +1,6 @@
 ---
 title: "Purchase call concurrency"
-subtitle: "Increase your organization's call concurrency from the Dashboard."
+subtitle: "Increase your organization's call concurrency from the Dashboard"
 description: "Purchase call concurrency from Billing & Add-Ons to increase the number of simultaneous calls available to your Vapi organization. See Vapi pricing for rates."
 slug: billing/purchase-call-concurrency
 ---

diff --git a/fern/calls/assistant-based-warm-transfer.mdx b/fern/calls/assistant-based-warm-transfer.mdx
@@ -1,6 +1,6 @@
 ---
 title: Configure assistant-based warm transfer
-subtitle: Let an AI assistant introduce a caller before connecting a transfer.
+subtitle: Let an AI assistant introduce a caller before connecting a transfer
 description: Configure an assistant-based warm transfer in the Vapi Dashboard or API, including operator prompts, fallback behavior, summaries, custom audio, and testing.
 slug: calls/assistant-based-warm-transfer
 ---

diff --git a/fern/calls/call-dynamic-transfers.mdx b/fern/calls/call-dynamic-transfers.mdx
@@ -1,6 +1,6 @@
 ---
 title: Dynamic call transfers
-subtitle: Route calls to different destinations based on real-time conversation context and external data.
+subtitle: Route calls to different destinations based on real-time conversation context and external data
 slug: calls/call-dynamic-transfers
 description: Learn how Vapi's dynamic call transfers work and explore implementation patterns for intelligent call routing.
 ---

diff --git a/fern/calls/call-ended-reason.mdx b/fern/calls/call-ended-reason.mdx
@@ -1,6 +1,6 @@
 ---
 title: Call ended reasons
-subtitle: All possible call ended reason codes and what they mean.
+subtitle: All possible call ended reason codes and what they mean
 slug: calls/call-ended-reason
 ---
 

diff --git a/fern/calls/call-outbound.mdx b/fern/calls/call-outbound.mdx
@@ -1,6 +1,6 @@
 ---
 title: Outbound Calling
-subtitle: Learn how to send outbound calls from Vapi.
+subtitle: Learn how to send outbound calls from Vapi
 slug: calls/outbound-calling
 ---
 

diff --git a/fern/calls/troubleshoot-call-errors.mdx b/fern/calls/troubleshoot-call-errors.mdx
@@ -1,6 +1,6 @@
 ---
 title: Troubleshoot call errors
-subtitle: Learn to diagnose failed calls based on what the caller experienced.
+subtitle: Learn to diagnose failed calls based on what the caller experienced
 slug: calls/troubleshoot-call-errors
 ---
 

diff --git a/fern/customization/provider-keys.mdx b/fern/customization/provider-keys.mdx
@@ -1,6 +1,6 @@
 ---
 title: Provider Keys
-subtitle: Bring your own API keys to Vapi.
+subtitle: Bring your own API keys to Vapi
 description: Connect provider credentials in Vapi and find configuration details for transcriber, model, voice, and cloud providers.
 slug: customization/provider-keys
 ---

diff --git a/fern/customization/transcriber-fallback-plan.mdx b/fern/customization/transcriber-fallback-plan.mdx
@@ -1,6 +1,6 @@
 ---
 title: Transcriber fallback configuration
-subtitle: Configure fallback transcribers that activate automatically if your primary transcriber fails.
+subtitle: Configure fallback transcribers that activate automatically if your primary transcriber fails
 description: Configure fallback transcribers so calls keep working if your primary speech-to-text provider fails. Covers automatic fallback, manual fallback, and HIPAA-compliant provider options.
 slug: customization/transcriber-fallback-plan
 ---

diff --git a/fern/enterprise/plans.mdx b/fern/enterprise/plans.mdx
@@ -1,6 +1,6 @@
 ---
 title: Vapi Enterprise
-subtitle: Build and scale with Vapi.
+subtitle: Build and scale with Vapi
 slug: enterprise/plans
 ---
 

diff --git a/fern/faq.mdx b/fern/faq.mdx
@@ -1,6 +1,6 @@
 ---
 title: Frequently Asked Questions
-subtitle: Frequently asked questions about Vapi.
+subtitle: Frequently asked questions about Vapi
 slug: faq
 ---
 

diff --git a/fern/glossary.mdx b/fern/glossary.mdx
@@ -1,6 +1,6 @@
 ---
 title: Definitions
-subtitle: Useful terms and definitions for Vapi & voice AI applications.
+subtitle: Useful terms and definitions for Vapi & voice AI applications
 slug: glossary
 ---
 

diff --git a/fern/knowledge-base/knowledge-base.mdx b/fern/knowledge-base/knowledge-base.mdx
@@ -2,7 +2,7 @@
 title: Introduction to Knowledge Bases
 subtitle: >-
   Learn how to create and integrate custom knowledge bases into your AI
-  assistants.
+  assistants
 slug: knowledge-base
 ---
 

diff --git a/fern/knowledge-base/using-query-tool.mdx b/fern/knowledge-base/using-query-tool.mdx
@@ -1,7 +1,7 @@
 ---
 title: Using the Query Tool for Knowledge Bases
 subtitle: >-
-  Learn how to configure and use the query tool to enhance your AI assistants with custom knowledge bases.
+  Learn how to configure and use the query tool to enhance your AI assistants with custom knowledge bases
 slug: knowledge-base/using-query-tool
 ---
 

diff --git a/fern/observability/simulations-advanced.mdx b/fern/observability/simulations-advanced.mdx
@@ -1,6 +1,6 @@
 ---
 title: Simulations advanced
-subtitle: Mock tools, send lifecycle webhooks, and reuse structured outputs in simulations.
+subtitle: Mock tools, send lifecycle webhooks, and reuse structured outputs in simulations
 description: "Configure advanced simulations with variables, tool mocks, lifecycle webhooks, and reusable structured outputs for consistent testing."
 slug: observability/simulations-advanced
 ---

diff --git a/fern/observability/simulations-configure-ai-tester.mdx b/fern/observability/simulations-configure-ai-tester.mdx
@@ -1,6 +1,6 @@
 ---
 title: Configure an AI tester
-subtitle: Define the AI tester's goal and control how it behaves, reasons, listens, and speaks.
+subtitle: Define the AI tester's goal and control how it behaves, reasons, listens, and speaks
 description: "Configure what a simulation AI tester should accomplish and how it behaves, including its model, transcriber, voice, turn-taking, and fallbacks."
 slug: observability/simulations-configure-ai-tester
 ---

diff --git a/fern/observability/simulations-manage.mdx b/fern/observability/simulations-manage.mdx
@@ -1,6 +1,6 @@
 ---
 title: Manage simulations
-subtitle: Edit simulation suites, review and rerun results, and maintain test coverage.
+subtitle: Edit simulation suites, review and rerun results, and maintain test coverage
 description: "Manage Vapi simulation suites and runs: edit configurations, review and rerun results, develop testing strategies, maintain coverage, and delete suites."
 slug: observability/simulations-manage
 ---

diff --git a/fern/observability/simulations-overview.mdx b/fern/observability/simulations-overview.mdx
@@ -1,6 +1,6 @@
 ---
 title: Simulations overview
-subtitle: Understand what Simulations are and when to choose them.
+subtitle: Understand what Simulations are and when to choose them
 description: "Simulations test assistants and squads through real conversations with AI testers. Learn how simulations work in Vapi and when to use them instead of Evals."
 slug: observability/simulations-overview
 ---

diff --git a/fern/observability/simulations-quickstart.mdx b/fern/observability/simulations-quickstart.mdx
@@ -1,6 +1,6 @@
 ---
 title: Simulations quickstart
-subtitle: Run your first simulation against an assistant or squad in minutes.
+subtitle: Run your first simulation against an assistant or squad in minutes
 description: "Create a simulation suite that asks an AI tester to book an appointment with Riley, then evaluate whether it was booked for the requested date and time."
 slug: observability/simulations-quickstart
 ---

diff --git a/fern/outbound-campaigns/build-personalized-appointment-campaign.mdx b/fern/outbound-campaigns/build-personalized-appointment-campaign.mdx
@@ -1,6 +1,6 @@
 ---
 title: Build a personalized appointment campaign
-subtitle: Combine contact variables, voicemail handling, scheduling, and webhooks.
+subtitle: Combine contact variables, voicemail handling, scheduling, and webhooks
 description: Build a personalized appointment campaign with contact variables, voicemail handling, scheduling, concurrency, and campaign webhooks.
 slug: outbound-campaigns/build-personalized-appointment-campaign
 ---

diff --git a/fern/outbound-campaigns/contact-data.mdx b/fern/outbound-campaigns/contact-data.mdx
@@ -1,6 +1,6 @@
 ---
 title: Campaign contact data
-subtitle: Add contacts and personalize calls with CSV variables.
+subtitle: Add contacts and personalize calls with CSV variables
 description: Format campaign CSV files, understand contact limits, add contacts manually, and pass dynamic variables to an assistant or squad.
 slug: outbound-campaigns/contact-data
 ---

diff --git a/fern/outbound-campaigns/overview.mdx b/fern/outbound-campaigns/overview.mdx
@@ -1,6 +1,6 @@
 ---
 title: Campaigns overview
-subtitle: Schedule and manage personalized outbound calls at scale.
+subtitle: Schedule and manage personalized outbound calls at scale
 description: Learn how outbound campaigns place calls, personalize conversations, control concurrency, and track results for each contact in the Vapi Dashboard.
 slug: outbound-campaigns/overview
 ---

diff --git a/fern/outbound-campaigns/quickstart.mdx b/fern/outbound-campaigns/quickstart.mdx
@@ -1,6 +1,6 @@
 ---
 title: Campaigns quickstart
-subtitle: Create and launch a personalized outbound campaign.
+subtitle: Create and launch a personalized outbound campaign
 description: Create an outbound campaign in the Vapi Dashboard or with the API, add contacts with dynamic variables, choose a calling window, and monitor each contact's result.
 slug: outbound-campaigns/quickstart
 ---

diff --git a/fern/outbound-campaigns/scheduling-and-lifecycle.mdx b/fern/outbound-campaigns/scheduling-and-lifecycle.mdx
@@ -1,6 +1,6 @@
 ---
 title: Campaign scheduling and lifecycle
-subtitle: Control dispatch timing, concurrency, and campaign actions.
+subtitle: Control dispatch timing, concurrency, and campaign actions
 description: Schedule campaign calls, set concurrency, understand read-only campaign behavior, and cancel, archive, or duplicate campaigns.
 slug: outbound-campaigns/scheduling-and-lifecycle
 ---

diff --git a/fern/outbound-campaigns/voicemail-and-call-screening.mdx b/fern/outbound-campaigns/voicemail-and-call-screening.mdx
@@ -1,6 +1,6 @@
 ---
 title: Campaign voicemail and call screening
-subtitle: Keep outbound calls from stalling on automated systems.
+subtitle: Keep outbound calls from stalling on automated systems
 description: Configure campaign assistants and squads to handle voicemail and automated phone-screening services without premature timeouts.
 slug: outbound-campaigns/voicemail-and-call-screening
 ---

diff --git a/fern/outbound-campaigns/webhooks.mdx b/fern/outbound-campaigns/webhooks.mdx
@@ -1,6 +1,6 @@
 ---
 title: Campaign webhooks
-subtitle: Check contacts before dialing and receive lifecycle events.
+subtitle: Check contacts before dialing and receive lifecycle events
 description: Configure campaign pre-dial webhooks and server messages, including request, response, and campaign event payload examples.
 slug: outbound-campaigns/webhooks
 ---

diff --git a/fern/phone-numbers/didww.mdx b/fern/phone-numbers/didww.mdx
@@ -1,6 +1,6 @@
 ---
 title: Import a number from DIDWW
-subtitle: Purchase or select a DIDWW number, route it through your inbound trunk, and import it into Vapi as a BYO SIP trunk number.
+subtitle: Purchase or select a DIDWW number, route it through your inbound trunk, and import it into Vapi as a BYO SIP trunk number
 description: Import a DIDWW phone number into Vapi as a BYO SIP trunk number. Assign the inbound trunk credential and an assistant, then test inbound and outbound calls.
 slug: phone-numbers/didww
 ---

diff --git a/fern/phone-numbers/free-telephony.mdx b/fern/phone-numbers/free-telephony.mdx
@@ -1,6 +1,6 @@
 ---
 title: Creating Free Phone Numbers 
-subtitle: Creating free phone numbers on the Vapi platform.
+subtitle: Creating free phone numbers on the Vapi platform
 slug: free-telephony
 ---
 

diff --git a/fern/providers/chat-dash.mdx b/fern/providers/chat-dash.mdx
@@ -1,6 +1,6 @@
 ---
 title: ChatDash Integration with Vapi
-subtitle: ChatDash is a white-label dashboard platform that integrates with Vapi to provide analytics, call logs, and Stripe billing for AI agent agencies.
+subtitle: ChatDash is a white-label dashboard platform that integrates with Vapi to provide analytics, call logs, and Stripe billing for AI agent agencies
 slug: providers/chat-dash
 ---
 

diff --git a/fern/providers/integrations.mdx b/fern/providers/integrations.mdx
@@ -1,6 +1,6 @@
 ---
 title: Integrations
-subtitle: Connect your own provider accounts to Vapi and use them with your own credentials.
+subtitle: Connect your own provider accounts to Vapi and use them with your own credentials
 description: Integrations let you connect your own provider accounts to Vapi. Learn what an integration is, when you need one, and how to add provider credentials in the dashboard.
 slug: providers/integrations
 ---

diff --git a/fern/providers/model/anthropic.mdx b/fern/providers/model/anthropic.mdx
@@ -1,6 +1,6 @@
 ---
 title: Anthropic
-subtitle: Use Anthropic's Claude models as the language model for your Vapi voice agent.
+subtitle: Use Anthropic's Claude models as the language model for your Vapi voice agent
 description: Connect Anthropic to Vapi to use Claude models as your voice agent's language model. Covers the supported Claude models and how to use them in the API.
 slug: providers/model/anthropic
 ---

diff --git a/fern/providers/model/anyscale.mdx b/fern/providers/model/anyscale.mdx
@@ -1,6 +1,6 @@
 ---
 title: Anyscale
-subtitle: Connect Anyscale and configure a model available to your account.
+subtitle: Connect Anyscale and configure a model available to your account
 description: Connect an Anyscale account to Vapi and configure an assistant with the exact model ID available through your Anyscale account.
 slug: providers/model/anyscale
 ---

diff --git a/fern/providers/model/cerebras.mdx b/fern/providers/model/cerebras.mdx
@@ -1,6 +1,6 @@
 ---
 title: Cerebras
-subtitle: Connect your Cerebras account to use Cerebras models in Vapi.
+subtitle: Connect your Cerebras account to use Cerebras models in Vapi
 description: Connect a Cerebras API key to Vapi and configure an assistant with a supported Cerebras model.
 slug: providers/model/cerebras
 ---

diff --git a/fern/providers/model/deepinfra.mdx b/fern/providers/model/deepinfra.mdx
@@ -1,6 +1,6 @@
 ---
 title: DeepInfra
-subtitle: Connect DeepInfra and configure any model available to your account.
+subtitle: Connect DeepInfra and configure any model available to your account
 description: Connect a DeepInfra account to Vapi and configure an assistant with an exact model ID from DeepInfra's current model catalog.
 slug: providers/model/deepinfra
 ---

diff --git a/fern/providers/model/deepseek.mdx b/fern/providers/model/deepseek.mdx
@@ -1,6 +1,6 @@
 ---
 title: DeepSeek
-subtitle: Connect your DeepSeek account to use DeepSeek models in Vapi.
+subtitle: Connect your DeepSeek account to use DeepSeek models in Vapi
 description: Connect a DeepSeek API key to Vapi and configure an assistant with a supported DeepSeek model.
 slug: providers/model/deepseek
 ---

diff --git a/fern/providers/model/gemini.mdx b/fern/providers/model/gemini.mdx
@@ -1,6 +1,6 @@
 ---
 title: Google
-subtitle: Use Google Gemini as your Vapi voice agent's language model.
+subtitle: Use Google Gemini as your Vapi voice agent's language model
 description: Configure Google Gemini as your Vapi assistant's language model and choose from the models Vapi supports.
 slug: providers/model/gemini
 ---