Twilio SMS Cost Calculator (US)

Formula (US): segments = 1 if chars ≤ 160 (GSM-7) or ≤ 70 (UCS-2), else ceil(chars ÷ 153) or ceil(chars ÷ 67). Delivered messages × segments × $0.0083 (outbound or inbound; long code, toll-free and short code) + outbound carrier passthrough per segment: AT&T $0.0035, T-Mobile $0.0045, Verizon $0.005, US Cellular $0.005, other $0.0042 (long code outbound defaults; Big-3 equal average ≈ $0.00433). MMS outbound $0.022 per message (MMS carrier fees not modeled). Failed messages: $0.001 failed-processing fee each instead. Optional number rent: long code $1.15/mo, toll-free $2.15/mo. 10DLC brand/campaign registration fees are one-time / compliance costs and are excluded from per-message math. Example: 100,000 single-segment messages → $830; with AT&T fees → $830 + $350 = $1,180.

Estimates only. Official list prices as of 2026-11-02 (Asia/Shanghai); the provider's pricing page prevails. Sources: Twilio SMS pricing (US)

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