generated: '2026-08-13' method: searched source: https://sms.cresclab.com/developers.html + https://sms.cresclab.com/llms.txt + https://cresclab.com/pricing note: >- Crescendo Lab publishes two distinct commercial surfaces and they price very differently. MAAC Go (sms.cresclab.com) — the developer-facing self-serve SMS product this repo's OpenAPI describes — publishes a real, numeric, usage-based price with no monthly fee. The enterprise platform (cresclab.com/pricing — MAAC / CAAC / DAAC) publishes four NAMED tiers with a stated billing unit but NO numeric price on any tier: every tier ends in a "contact a consultant" call to action. Both are recorded below; the numeric plan_count counts only tiers that are actually purchasable as published. plan_count: 6 currency: TWD surfaces: - name: MAAC Go (self-serve SMS API) url: https://sms.cresclab.com/developers.html model: pay-as-you-go, prepaid wallet self_serve: true monthly_fee: 0 card_required_to_start: false - name: Crescendo Lab platform (MAAC / CAAC / DAAC) url: https://cresclab.com/pricing model: subscription, priced on monthly active contacts self_serve: false sales_gated: true plans: - name: MAAC Go Free Trial surface: MAAC Go price: 0 currency: TWD billing_period: one-time included_quota: 50 SMS (NT$39 trial credit, one-time, granted on signup) overage: NT$0.78 per SMS segment once trial credit is spent limits: rate_limit: new accounts (<24h) capped per rate-limits/crescendo-lab-rate-limits.yml notes: No credit card required. Signup at https://sms.cresclab.com/signup.html source: https://sms.cresclab.com/llms.txt - name: MAAC Go Pay-as-you-go surface: MAAC Go price: 0.78 currency: TWD billing_period: per-unit unit: SMS segment segmentation: 70 characters/segment (Chinese) · 160 characters/segment (English) included_quota: none — prepaid wallet, debited per successful send overage: n/a (prepaid) refunds: carrier-level permanent failures auto-refund the wallet limits: rate_limit: established accounts (>=24h) capped per rate-limits/crescendo-lab-rate-limits.yml notes: >- No monthly fee. Wallet top-up via Stripe / domestic TWD card. On a send that exceeds the balance the API returns HTTP 402 insufficient_balance with a topup_url. source: https://sms.cresclab.com/developers.html - name: MAAC Go Volume (negotiated) surface: MAAC Go price: null currency: TWD billing_period: negotiated threshold: monthly volume > 50,000 messages included_quota: negotiated notes: Published on the developer pricing block as "議價 · 月量 > 50k" (negotiated pricing above 50k/month). source: https://sms.cresclab.com/developers.html - name: Growth 成長方案 surface: Crescendo Lab platform price: null currency: TWD billing_period: subscription price_published: false audience: Early-stage brands wanting entry-level omnichannel + AI automation. included_features: - Omnichannel message sending (LINE / Email / SMS) - Basic segmentation and automated journeys - MAAC AI marketing automation - CAAC AI conversational engagement notes: No numeric price published; tier CTA is a sales contact. source: https://cresclab.com/pricing - name: Scale 擴張方案 surface: Crescendo Lab platform price: null currency: TWD billing_period: subscription price_published: false audience: Scaling brands needing deeper automation and website analytics. included_features: - Everything in Growth, with raised quotas - Advanced segmentation and automated journeys - GA4 website data integration - Deep customer-data management notes: No numeric price published; tier CTA is a sales contact. source: https://cresclab.com/pricing - name: Professional 專業方案 surface: Crescendo Lab platform price: null currency: TWD billing_period: subscription price_published: false audience: Mature ecommerce/brand teams needing full data integration and revenue attribution. included_features: - Everything in Scale, with raised quotas - Ecommerce platform + product catalog integration - Online revenue attribution reporting - Deep AI x data x channel integration notes: Marked "最受歡迎" (most popular). No numeric price published. source: https://cresclab.com/pricing - name: Enterprise 企業方案 surface: Crescendo Lab platform price: null currency: TWD billing_period: subscription price_published: false audience: Brand groups, multinationals, large operations teams. included_features: - Everything in Professional, with raised quotas - Dedicated consultant and priority support - Cross-team / cross-brand / cross-market governance - Enterprise security and compliance notes: No numeric price published; tier CTA is a sales contact. source: https://cresclab.com/pricing - name: Custom Pricing surface: Crescendo Lab platform price: null currency: TWD billing_period: negotiated price_published: false notes: >- Bespoke quote for groups with specific integration, compliance, spend-cap or rollout requirements. Contract options include a hard spend ceiling. source: https://cresclab.com/pricing billing_model: platform: unit: monthly active contacts (月活躍聯絡人) definition: >- Unique contacts that actively interacted with the brand within a rolling 30 days (opened a message, clicked, conversed, browsed the site). Blocked, dormant, and merely-imported-but-never-engaged contacts are NOT billed; contact storage itself is unlimited and free. smoothing: Quarterly smoothed billing to avoid single-month spikes; usage monitored with proactive alerts. spend_cap: Available to enterprise customers by contract. credits: >- Message pushes, automated journeys and API sends draw down account credits; balance, alerts and usage caps are visible in-product. changed_from: previously billed on LINE valid friends (LINE 有效好友) maac_go: unit: SMS segment prepaid: true ledger: wallet_events transaction log (top-ups, charges, refunds) atomic_debit: Wallet is debited only on successful send; carrier failure auto-refunds. plans_note: >- plan_count 6 counts the four named platform tiers plus the two purchasable MAAC Go plans (Free Trial, Pay-as-you-go). The two negotiated entries (MAAC Go Volume, Custom Pricing) are quote-only and are listed but not counted as published plans.