Enterprise messaging comparisons
Bandwidth is a network operator with deep voice and messaging APIs, published customer-success plans, and public example rates for US messaging. Tells is a managed messaging relationship: high-volume SMS, RCS, voice, AI agents, and number intelligence with the Tells team running registration, routing, and monitoring operations. Choose by whether you want to operate on network infrastructure with tiered success resources, or hand a defined operations scope to one accountable team.
Last verified July 23, 2026 · Methodology · Corrections
Bandwidth’s identity is the network itself. It operates its own carrier network with coverage it reports across 65+ countries, publishes example US rates like $0.004 per outbound 10DLC SMS, and documents differentiated customer-success plans — Signature with 24/7/365 technical support, Silver adding a pooled customer success manager and SLA-backed responses, and Gold adding a designated CSM, a dedicated Slack channel, and quarterly business reviews. For teams that want to build directly on network infrastructure with clearly tiered success resources, that is a strong, well-documented model.
Tells competes on a different axis: the integration of the work around messaging. One relationship covers high-volume SMS with 10DLC, short-code and toll-free senders, RCS with managed verification, voice and AI agents sharing conversation context, call announcements, and number intelligence applied inside the send path — with the Tells team performing registrations, carrier-review remediation, and live campaign monitoring. The evaluation is network depth and tiered self-direction on one side versus an integrated, operated messaging program on the other.
| Dimension | Tells | Bandwidth |
|---|---|---|
| Operating model | Managed messaging relationship; the Tells team performs registration and monitoring operations | Network/API provider with tiered Customer Success Plans (Signature, Silver, Gold) TL1,B1 |
| Support availability | Hands-on team support; scope defined per account | Published hours differ by department: voice support 24/7; messaging support Mon–Fri 3am–8pm ET; messaging registration support Mon–Fri 8am–5pm ET B2 |
| Named resources | Operating team attached to qualifying accounts | Pooled CSM at Silver; designated CSM plus dedicated Slack channel at Gold (support-tier prices not public) B1 |
| 10DLC registration | Tells prepares and submits filings, tracks status, handles carrier follow-ups | Registration through its platform with a published Compliance Hub, best-practice guidance, and success-plan vetting expertise TL1,B1,B3 |
| Network footprint | US and Canada carrier routes | Vendor-reported coverage in 65+ countries; 40+ with PSTN replacement TL1,B8 |
| Public pricing | Custom quotes by volume, message type, and number type | Example US rates public (10DLC SMS $0.004, MMS $0.015, before taxes/fees); full and support pricing may require sales TL7,B5,B1 |
Owned network + APIs; success resources scale by plan tier
Integrated channels + data with one team operating the program
| Dimension | Tells | Bandwidth |
|---|---|---|
| High-volume SMS/MMS | Yes — 10DLC, short code, toll-free | Yes — 10DLC, short code, toll-free, alphanumeric per public pricing TL1,B5 |
| RCS Business Messaging | Yes — verified sender, SMS fallback, managed verification | Yes — integrating RCS registration into existing messaging operations with expert guidance TL3,B4 |
| Voice | Yes — voice, AI voice agents, SMS call announcements | Yes — Voice API: calling, recording, conferencing, AMD, media streaming TL4,TL6,B6 |
| AI integrations | Yes — native AI SMS + voice agents with shared context | Yes — Conversational AI/BYOC integrations incl. documented OpenAI Realtime integration TL4,B6,B9 |
| Number intelligence / lookups | Yes — carrier/line type, CNAM, 0–100 activity score in the send path | Authentication/number services documented; compare specific lookup needs directly TL5,B5 |
| APIs & webhooks | REST API, webhooks, OAuth2; full reference account-gated | Public messaging and programmable-voice webhook documentation TL7,B7 |
Bandwidth documents its service model in detail: Signature includes an AI chatbot plus 24/7/365 technical support by phone and email; Silver adds a pooled customer success manager, SLA-backed responses and vetting, porting specialists, and biannual expert sessions; Gold adds a designated CSM, a dedicated Slack support channel, monthly expert sessions, and quarterly business reviews. Two structural notes matter for buyers: support-tier prices are not public, and published hours differ by department — voice support is 24/7 while messaging support and messaging-registration support run on weekday schedules. Tells structures this differently: the operating team works the messaging program itself — registrations, reviews, routing, monitoring — as part of the account relationship.
Bandwidth supports brand and campaign registration through its platform, publishes a Compliance Hub with detailed 10DLC guidance and fees, and includes messaging vetting and campaign expertise in its paid success tiers. Tells performs the registration workflow for customers end to end — preparation, submission, status tracking, and carrier-review remediation — including short-code lease and toll-free verification. Carrier and registry approval decisions remain outside any provider’s sole control.
Carrier and registry approval decisions remain outside any provider’s sole control.
Bandwidth’s developer documentation is public and solid: messaging and programmable-voice webhooks, media streaming suitable for AI integrations, and a documented OpenAI Realtime WebSocket integration. Tells provides a REST API with OAuth2 and webhooks, with the complete reference and sandbox delivered during onboarding. If your evaluation begins with reading full public API specs, Bandwidth serves that today; if it begins with an operating conversation about a messaging program, Tells pairs the reference with guided implementation.
Bandwidth publishes example US message rates (outbound 10DLC SMS $0.004, MMS $0.015, before taxes and fees) while noting complete pricing may require a quote, and does not publish success-tier prices. Tells prices by custom quote. Compare complete program quotes — messaging rates, carrier surcharges, registration and vetting fees, number fees, success/support costs, and commitments — rather than a single per-message figure; this page publishes no negotiated prices for either provider.
Yes — as of July 23, 2026, Bandwidth documents tiered Customer Success Plans: pooled CSM at Silver and a designated CSM with a dedicated Slack channel at Gold, plus porting and messaging-vetting expertise. Tier pricing is not public. Tells includes its operating team in the qualifying account relationship rather than as separate tiers.
By department. Bandwidth publishes 24/7 support for voice, while messaging support runs Mon–Fri 3am–8pm ET and messaging-registration support Mon–Fri 8am–5pm ET. Check the departments your program depends on.
Both are credible, differently. Bandwidth documents voice APIs with media streaming and an OpenAI Realtime integration for teams building their own AI stack. Tells ships native AI voice and SMS agents that share conversation context, operated within the same relationship as your messaging program.
Tells focuses on US and Canada carrier routes. Bandwidth reports network coverage in 65+ countries. If your program needs broad international sending, weigh that footprint directly; if it is North-America-centric and high-volume, the operating model becomes the bigger differentiator.
All sources accessed July 23, 2026. Competitor statements are vendor claims unless independently verified. Method: how Tells evaluates providers.
Spot an error? Email tells@tells.co — verified corrections are published with an updated modification date.