What a AI Event Planning Assistant actually does
Matches vendors to event requirements, generates run-of-show timelines, handles attendee Q&A, and drafts personalized email/SMS sequences for the entire event lifecycle.
An AI event planning assistant covers four core planning tasks: vendor matching (caterers, venues, photographers, florists matched from a curated vendor database by preference text and budget), timeline/run-of-show generation (from event date, guest count, venue type, and schedule preferences), attendee Q&A chatbot (FAQ, dietary restrictions, RSVP management, parking, accessibility), and AI-drafted communication sequences (save-the-date, RSVP reminder, day-of instructions, thank-you). Claude Sonnet 4.6 handles timeline and vendor matching logic; Haiku 4.5 powers the FAQ chatbot at 10x lower cost.
The market reality: Cvent is built for Fortune 500 corporate event programs ($10M+ annual events budgets). Bizzabo is enterprise event marketing. These are not tools for wedding planners doing 50 events/year or corporate teams managing 100-person department offsites. The sweet spot is Lovable + Sonnet + Stripe for deposits + Twilio for SMS — a freelance planner can ship this in a weekend and charge clients $200–$500/month for a branded planning portal.
AI capabilities involved
Vendor matching from preference text and budget
Timeline and run-of-show generation
Attendee Q&A chatbot (FAQ, RSVP, dietary, logistics)
Email and SMS sequence drafting
Save-the-date and invitation image generation
Who uses this
- Independent wedding planners and event design firms (20–200 events/year) wanting a branded client-facing planning portal
- Corporate event teams at SMBs (50–500 employees) managing recurring events (all-hands, offsites, holiday parties) in-house
- Destination management companies (DMCs) coordinating complex multi-vendor event logistics
- Event planning agencies wanting to offer a branded self-service planning tool as a tier-two product alongside full-service engagements
SaaS alternatives on the market
Real products you can sign up for today — with current 2026 pricing, honest pros and cons.
Bizzabo
Enterprise B2B event marketing teams running large conferences with sponsor revenue.
None
Enterprise, quote-based
Pros
- +Comprehensive event marketing platform covering registration, app, analytics, and sponsor management.
- +Strong integration with Salesforce, HubSpot, and Marketo for corporate event marketing attribution.
- +Good for conference and trade-show programs with 500+ attendees.
Cons
- −Zero white-label — Bizzabo brand appears throughout.
- −Enterprise-only pricing; minimum commitment.
- −Built for conference programs, not weddings or intimate corporate events.
Cvent
Fortune 500 corporate travel and event programs with dedicated event-management teams.
None
Enterprise, quote-based ($10K+/year minimum)
Pros
- +Largest enterprise event platform — venue sourcing, hotel room blocks, attendee management, mobile app.
- +Industry-standard for Fortune 500 corporate event programs.
- +Venue marketplace with 400K+ properties globally.
Cons
- −Zero white-label — built to be the Cvent brand experience.
- −Enterprise pricing completely inaccessible for freelance planners or small agencies.
- −Steep learning curve; requires dedicated event-tech staff to operate.
WeddingWire / Zola
Couples planning their own weddings on a budget — not for professional event planners wanting branded tools.
Free for couples
Vendor advertising model (couples use free; vendors pay for leads)
Pros
- +Massive vendor marketplace — free for couples to use.
- +Checklist and planning tools built in.
- +Strong wedding-specific features (registry, RSVP, seating chart).
Cons
- −Zero white-label — consumer marketplace, not a planner's branded tool.
- −Revenue model is vendor advertising; couples are the product.
- −No AI-powered vendor matching or custom communication sequences.
The AI stack
The event planning stack splits by task frequency: timeline generation and vendor matching are one-time per-event tasks (Sonnet); FAQ chatbot runs on every attendee question (Haiku). Route everything through this cost split and the total operating cost stays under $100/mo for a typical planner doing 5–10 events/month.
Vendor matching
Matches event vendors (caterers, venues, photographers, florists, AV) to the client's style preferences, budget, guest count, and date availability
Claude Sonnet 4.6
$3 / $15 per M tokensAll vendor matching — the quality of interpretation of vague preferences is what makes this valuable
Claude Haiku 4.5
$1 / $5 per M tokensMatching when preferences are explicitly structured (checklist of attributes rather than natural-language description)
Our pick: Claude Sonnet 4.6 for all vendor matching — the quality difference on natural-language preference interpretation is the core product value.
Timeline and run-of-show generation
Generates a detailed event timeline from event type, date, start/end time, venue type, and guest count
Claude Sonnet 4.6
$3 / $15 per M tokensPrimary timeline generation — quality and specificity of the timeline is a key client-visible deliverable
Our pick: Claude Sonnet 4.6 exclusively — this is a core client deliverable where quality matters.
Attendee Q&A chatbot
Handles attendee questions about event logistics: venue, parking, dress code, dietary accommodations, RSVP deadlines, schedule
Claude Haiku 4.5
$1 / $5 per M tokensAll FAQ chatbot interactions — the volume can be high (100+ attendees per event), so cost efficiency matters
GPT-5.4 nano
$0.20 / $1.25 per M tokensFirst-pass intent detection before routing to Haiku for full response
Our pick: Claude Haiku 4.5 for all attendee FAQ responses. At $0.003 per response, even 1,000 attendee questions costs $3 total.
Email and SMS communication drafting
Drafts personalized save-the-date, RSVP reminder, day-of logistics, and thank-you messages
Claude Haiku 4.5
$1 / $5 per M tokensStandard corporate event communications, RSVP reminders, and logistics sequences
Claude Sonnet 4.6
$3 / $15 per M tokensPremium wedding copy where the planner's brand voice needs to shine
Our pick: Haiku for corporate event sequences; Sonnet for wedding communications where copy quality is a differentiator.
Save-the-date and invitation image generation
Generates event-specific save-the-date images and invitation artwork
gpt-image-2
$0.006 low / $0.053 med / $0.211 high per imageSave-the-dates and invitations where text legibility in the image is required
FLUX.2 [pro]
~$0.03/imageAtmospheric background images where event details are overlaid via CSS/design tools
Our pick: gpt-image-2 medium ($0.053) for full save-the-date compositions with text; FLUX.2 [pro] ($0.03) for atmospheric backgrounds where text is overlaid separately.
Reference architecture
The event planning assistant is a multi-flow application with three distinct user journeys: planner-side (event setup, vendor management, timeline generation), attendee-side (RSVP, Q&A), and communication automation (scheduled sequences via Twilio/Mailgun). The simplicity here is a feature — a clean, focused architecture ships in a weekend.
Planner creates a new event
Next.js/Vite admin dashboard + SupabaseEvent profile: name, type (wedding/corporate/social), date, start/end time, venue name and address, guest count, budget range, style preferences (natural language). Stored in events table.
AI vendor matching run
Supabase Edge Function + Claude Sonnet 4.6Sonnet receives event profile + vendor database (vendors table with category, style tags, price tier, availability). Returns ranked vendor recommendations with rationale for each. Stored in vendor_recommendations. Cost: ~$0.05 per matching run.
Run-of-show timeline generated
Supabase Edge Function + Claude Sonnet 4.6Sonnet receives event type, start/end time, guest count, venue type, and special requirements. Generates JSON timeline: [{time, activity, responsible_party, duration_min, notes}]. Stored in timelines table. Displayed in interactive drag-and-drop view. Cost: ~$0.05 per timeline.
RSVP landing page and attendee registration
Public Next.js page (no auth) + SupabaseShareable RSVP link with event name, date, venue, and RSVP form (name, email, phone, dietary restrictions, attendance). RSVPs stored in attendees table. Guest count tracked in real time.
Attendee FAQ chatbot widget embedded on RSVP page
Embedded chat widget + Supabase Edge Function + Claude Haiku 4.5Haiku receives attendee question + event FAQ context (venue address, parking, dress code, schedule) as system prompt. Returns response. Cost: ~$0.003 per question. Human contact escalation CTA for complex questions.
Communication sequences automated via Twilio/Mailgun
Supabase pg_cron + Twilio SMS + Mailgun emailHaiku pre-generates 3 SMS variants and 2 email variants per sequence (save-the-date, RSVP reminder, day-of, thank-you). Planner reviews and approves sequences. pg_cron triggers sending at scheduled times. TCPA opt-in verified before SMS send.
Deposit collection via Stripe Checkout
Stripe Checkout integration + SupabasePlanner sets deposit amount per event. Stripe Checkout link generated. Client pays deposit. Webhook updates payments table. Deposit receipt stored for accounting.
Estimated cost per request
~$0.05 per timeline or vendor match (Sonnet); ~$0.003 per attendee FAQ response (Haiku); ~$0.006/SMS via Twilio (US). Total AI cost for a 100-person event: ~$2–$5.
Cost calculator
Drag the sliders to model your actual usage. The numbers update in real time so you can stress-test economics before writing a single line of code.
Cost model for a wedding planner doing 5 events/month, each with ~75 attendees and 2 weeks of communication sequences.
Estimated monthly cost
$49.98
≈ $600 per year
Calculator notes
- Stripe Checkout processing: 2.9% + $0.30 per deposit transaction — passed through to client or built into deposit structure.
- Image generation for save-the-dates: $0.053 (gpt-image-2 medium) × 1 per event = $0.27/month for 5 events — negligible.
- Communication sequences are pre-generated in batches by Haiku when the event is created — no per-send AI cost after generation.
- SMS sending via Twilio at $0.006/message in the US: 3 messages × 75 attendees × 5 events = 1,125 messages = $6.75/month.
Build it yourself with vibe-coding tools
Weekend MVP delivers a complete event planning dashboard: event creation, AI timeline generation, vendor database with AI matching, RSVP landing page with attendee chatbot, and Stripe deposit collection. Communication sequences take 1 more day to wire up.
Time to MVP
12–16 hours (full MVP); +1 day for Twilio SMS sequences
Total cost to MVP
$25 Lovable Pro + $20 Anthropic credits + Stripe Connect (free to set up) + Twilio ($1 trial credit) = ~$46 total
You'll need
Starter prompt
Build a white-label AI event planning assistant using Vite + React + TypeScript + Tailwind CSS with Supabase backend. Core features: 1. Planner auth: Supabase Auth (email/password). Admin role for the planner. 2. Event creation form: event_name, event_type (wedding|corporate|social|birthday|conference), date, start_time, end_time, venue_name, venue_address, guest_count, budget_range ($500-$2K|$2K-$10K|$10K-$50K|$50K+), style_notes (text area for natural language preferences) 3. AI Timeline Generator: Edge Function calls Claude Sonnet 4.6 with event details. System prompt: 'You are an expert event planner. Generate a detailed run-of-show timeline for this event. Return JSON array: [{time: HH:MM, activity: string, responsible_party: string, duration_min: number, notes: string}]'. Display as sortable timeline cards. 4. Vendor database: admin-editable table of vendors (name, category: catering|venue|photography|floral|AV|entertainment, price_tier: budget|mid|premium, style_tags: string[], capacity_max: number, notes). Pre-populate with 10 sample vendors per category. 5. AI Vendor Matcher: Edge Function calls Sonnet 4.6 with event style_notes + budget_range + guest_count + vendors table. Returns: top 3 vendor recommendations per category with rationale. Display as recommendation cards. 6. RSVP landing page: /rsvp/[event_id] — public, no auth. Shows event name, date, venue. RSVP form: name, email, phone (optional), attending: yes/no, dietary restrictions. Inserts into attendees table. 7. Attendee FAQ chatbot: floating chat button on RSVP page. Edge Function calls Haiku 4.5 with event FAQ context as system prompt (venue address, parking, dress code, schedule, contact). Returns response. 8. Stripe deposit: Edge Function creates Stripe Checkout session for the deposit amount. Planner sets deposit_amount per event. Attendees or clients can pay deposit via the RSVP page. Database: events, vendors, vendor_recommendations, timelines, attendees, payments. Secrets: ANTHROPIC_API_KEY, STRIPE_SECRET_KEY, STRIPE_PUBLISHABLE_KEY.
Paste this into Lovable
Follow-up prompts (run in order)
- 1
Add Twilio SMS communication sequences: on event creation, Haiku 4.5 generates 3 SMS templates (save-the-date, 1-week reminder, day-of logistics) per event. Templates stored in communication_sequences table. Planner reviews and edits. pg_cron sends to all attendees with opt-in phone numbers at scheduled times. Required: TCPA consent checkbox on RSVP form.
- 2
Add AI-generated save-the-date image: a 'Generate Save-the-Date' button on the event page calls gpt-image-2 API with prompt: 'Elegant [style] event save-the-date design for [event name] on [date] at [venue], [style_notes]. Include the text of the date and venue clearly.' Returns 3 variants for planner to select. Store selected image in Supabase Storage.
- 3
Add multi-client support: add a 'Clients' page where the planner can create client profiles (name, email, phone, wedding/event date). Each event linked to a client. Client gets a read-only view of their event dashboard (timeline, vendors, RSVP count, budget tracker) via a shareable client portal link with a token-based access (no login required).
- 4
Add budget tracker: a budget worksheet per event with line items (venue, catering, flowers, photography, etc.). Planner enters actual vs. estimated costs. A running total shows budget vs. actual. Edge Function calls Haiku 4.5 monthly with over-budget categories to generate a 2-sentence budget advisory.
Expected output
A working event planning portal where a planner can create an event, generate an AI run-of-show timeline, see vendor recommendations from a seeded database, share an RSVP link with attendees (who can ask the FAQ chatbot), and collect a deposit via Stripe. Full end-to-end in one weekend.
Known gotchas
- !Vendor database is the product — the AI is only as good as your vendor database. Spend the first weekend seeding 10 high-quality vendors per category (catering, venue, photography, floral, AV) before showing to clients. An empty database produces meaningless recommendations.
- !TCPA compliance: the RSVP form must include an explicit SMS opt-in checkbox ('I agree to receive event updates via SMS from [Planner Name]') before collecting phone numbers for SMS campaigns. Never send SMS to numbers collected without this consent.
- !Stripe deposit requires KYC verification (1–3 business days) — set up your Stripe account before the weekend build so it's verified when you need it.
- !Timeline generation quality varies by event type — Sonnet knows wedding timelines well but may need system prompt examples for unusual event types (escape room team-building, corporate hackathon). Add 3–5 few-shot examples in your system prompt for each major event type you serve.
- !Lovable may generate the RSVP page without proper mobile optimization — event RSVPs are frequently completed on mobile. Test the RSVP page on a real phone before going live.
- !Save-the-date images via gpt-image-2: medium quality ($0.053) is sufficient for digital save-the-dates. High quality ($0.211) is only needed for print-ready output at 300dpi — for most web and email use cases, medium quality is fine.
Compliance & risk reality check
Event planning assistants face two primary compliance areas: TCPA for SMS sequences and PCI DSS for deposit collection. Both are manageable with the right defaults.
TCPA — SMS review-request and communication campaigns
Automated SMS sequences to event attendees require documented prior express written consent under TCPA. The FCC's 2023 One-to-One Consent rule requires that consent name the specific company sending the texts. Class-action TCPA settlements frequently run $500–$1,500 per violation.
Mitigation: Include an explicit SMS opt-in checkbox on the RSVP form: 'I agree to receive event updates via SMS from [Planner/Event Name].' Store consent records with timestamp and RSVP ID. Honor STOP requests within 24 hours. Never send SMS to phone numbers collected without explicit consent.
PCI DSS 4.0.1 — deposit collection
Stripe Checkout offloads the vast majority of PCI DSS scope — your system never handles raw card data. However, PCI DSS 4.0.1 (effective March 2025) includes new JavaScript security requirements (Requirement 6.4.3) for pages that redirect to payment, including Content-Security-Policy headers and integrity verification of third-party scripts.
Mitigation: Use Stripe Checkout (redirect) rather than Stripe Elements (embedded). Add Stripe's recommended Content-Security-Policy headers. Never log or store any payment card data in your own database. Let Stripe's PCI-certified infrastructure handle all card processing.
CAN-SPAM — email communication sequences
Commercial email sequences (save-the-date, RSVP reminders, thank-you notes) are subject to CAN-SPAM. Requirements: accurate from/subject lines, clear identification as commercial if commercial, physical postal address of sender, functional unsubscribe link honored within 10 business days.
Mitigation: Use a reputable email-sending platform (Mailgun, SendGrid) with built-in unsubscribe management. Include the planner's business address in every email footer. Don't mask the sender identity.
ADA accessibility on RSVP forms
RSVP forms and event landing pages are covered by Web Content Accessibility Guidelines (WCAG 2.2 AA) for attendees with disabilities. This includes keyboard navigation, screen reader compatibility, and appropriate color contrast.
Mitigation: Run Lighthouse accessibility audit on the RSVP page during development. Ensure all form fields have proper labels, error messages are descriptive, and color is not the only indicator of required fields. This is also good practice for attendees with visual impairments.
Build vs buy: the real math
6–10 weeks
Custom build time
$15,000–$28,000
One-time investment
6–12 months (at 50+ events/year using the platform)
Breakeven vs buying
A wedding planner doing 50 events/year, saving 3 hours per event in vendor research and timeline generation at $75/hr consultant rate = $11,250/year in time savings. Against a $15K RapidDev build, payback is 1.5 years. The DIY path (1 weekend + $50 in tools) achieves 80% of this time saving at a fraction of the cost, with payback in the first month. The custom build is only justified for multi-client agencies (10+ planner clients using the platform) where a single-tenant Lovable app becomes insufficient.
Skip the DIY — RapidDev builds the production version
A Lovable MVP gets you a demo. Production needs auth that doesn't leak data, AI calls that don't bankrupt you, observability when models drift, and code you can audit. That's what we ship.
Discovery call (free)
30 minWe map your exact AI Event Planning Assistant use case: who uses it, target volume, AI model choice, integrations, compliance scope. You get a detailed scope document and fixed-price quote within 48 hours.
AI-accelerated build
6–10 weeksOur engineers use Claude Code, Lovable, and custom tooling to ship 3–5x faster than agencies. You see weekly progress in a staging environment — not a black box.
Launch + handoff
1 weekWe deploy to your infrastructure, transfer the GitHub repo, set up CI/CD and monitoring, and train your team. You own 100% of the source code, prompts, and model configurations.
What you get
Timeline
6–10 weeks
Investment
$15,000–$28,000
vs SaaS
ROI in 6–12 months (at 50+ events/year using the platform)
30-min call. Fixed-price quote within 48 hours. No commitment.
Frequently asked questions
How much does it cost to build a white-label AI event planning assistant?
A Lovable MVP costs $25 tools + $20 API credits + $2 Twilio trial credits = under $50 to build. Operating costs for 5 events/month average $60–$80/month including infrastructure. RapidDev builds multi-client platforms with vendor databases, custom branding, and Stripe Connect in the $15K–$28K range.
How long does it take to ship an AI event planning MVP?
One weekend with Lovable gets you a working event planning portal with timeline generation, vendor matching, RSVP page, attendee chatbot, and Stripe deposits. Adding Twilio SMS sequences takes 1 more day. A RapidDev custom build with multi-client support and custom vendor database ships in 6–10 weeks.
Is there a white-label event planning SaaS I can resell?
No honest one exists in 2026. Bizzabo and Cvent are enterprise-only direct platforms. WeddingWire and Zola are consumer marketplaces. The event planning software market is fragmented between enterprise tools (too complex and expensive) and consumer apps (no white-label). Building your own is both the constraint and the competitive opportunity.
What TCPA risks come with SMS event communications?
TCPA class-action settlements for bulk SMS without consent run $500–$1,500 per violation. An RSVP campaign to 500 attendees without documented consent has theoretical liability of $250K–$750K. Mitigate by including an explicit SMS opt-in checkbox on every RSVP form, storing consent records with timestamps, and honoring STOP requests within 24 hours. Never import phone numbers from external lists without verified TCPA consent.
How good is AI-generated vendor matching without a curated database?
AI vendor matching is only as good as your vendor database. An empty database produces meaningless recommendations. Spend your first week building a high-quality vendor database with 10+ vetted vendors per category (catering, venue, photography, floral, AV) before showing the tool to clients. The AI's value is in matching from your curated list — not in discovering vendors on the internet.
Can RapidDev build a white-label event planning tool for my agency?
Yes — RapidDev has shipped 600+ applications and can build a branded event planning platform with vendor database management, AI timeline generation, multi-client portal, SMS/email automation, and Stripe Connect for deposit collection. Standard builds run $15K–$28K and ship in 6–10 weeks. Book a free 30-minute consultation to scope your vendor database requirements and client portal design.
Want the production version?
- Delivered in 6–10 weeks
- You own 100% of the code
- AI cost monitoring built in
30-min call. No commitment.