Comparison
Overview
Company snapshot and where each provider is based.
| Field | Telesign | Telnyx |
|---|---|---|
| What it is | Digital identity and programmable communications platform offering SMS, RCS, voice, WhatsApp, Viber and email APIs alongside phone verification and fraud-prevention services. | Telnyx is a licensed telecom carrier offering a CPaaS platform with APIs for SMS, MMS, RCS, WhatsApp, voice, and email over its own private global IP network. |
| Founded | 2005 | 2009 |
| Ownership | private | private |
| Employees | 500-1,000 | 201-500 |
| HQ city | Marina del Rey | Chicago |
| HQ country | USA | USA |
What's the differenceTelnyx edges ahead on the overall messaging.dev Score (78 vs 70). Telesign is private and headquartered in Marina del Rey, USA; Telnyx is private and based in Chicago, USA.
Channels
Which messaging channels each provider can send and receive on.
| Field | Telesign | Telnyx |
|---|---|---|
| SMS | Yes | Yes |
| MMS | No | Yes |
| RCS | Yes | Yes |
| Yes | Yes | |
| Viber | Yes | No |
| Facebook Messenger | No | No |
| Telegram | No | No |
| Apple Messages for Business | No | No |
| Voice | Yes | Yes |
| Yes | Yes |
What's the differenceThey share 5 channels. Telesign additionally offers Viber, while Telnyx additionally offers MMS.
Developer Experience
How quickly a developer can sign up and send a first message.
| Field | Telesign | Telnyx |
|---|---|---|
| Self-service onboarding | Yes | Yes |
| Free developer credit | Yes | No |
| Docs quality | high | high |
| Documentation | Open ↗ | Open ↗ |
| SDKs | C#, Java, Node.js, PHP, Python, Ruby | Node.js, Python, Ruby, Go, Java, .NET, PHP |
| Sandbox / test env | No | No |
| API types | REST | REST, SMPP |
What's the differenceOn SDKs, Telesign adds C#; Telnyx adds Go, .NET; on API types, Telnyx adds SMPP.
Data & Compliance
Data residency options and enterprise compliance certifications.
| Field | Telesign | Telnyx |
|---|---|---|
| EU data residency | Yes | Yes |
| US data residency | Yes | Yes |
| Choose region | No | Yes |
| GDPR | Yes | Yes |
| ISO 27001 | Yes | Yes |
| SOC 2 | Yes | Yes |
| HIPAA | Yes | Yes |
What's the differenceTelnyx offers Choose region, while Telesign does not.
Data Retention
How long message content and metadata are stored, and whether that is configurable.
| Field | Telesign | Telnyx |
|---|---|---|
| Retention policy | Customer transaction data is retained for 90 days for operational troubleshooting and billing purposes, with full backups maintained across two separate data centers also kept for 90 days. | Telnyx follows a "Privacy by Design", minimal data-retention approach with customer-controlled retention policies, so message content and metadata retention can be configured by the customer. Its security-practices documentation states security logs are retained for 90 days; specific default retention periods for message content are not publicly documented in detail. |
What's the differenceTelesign: Customer transaction data is retained for 90 days for operational troubleshooting and billing purposes, with full backups maintained across two separate data centers also kept for 90 days. Telnyx: Telnyx follows a "Privacy by Design", minimal data-retention approach with customer-controlled retention policies, so message content and metadata retention can be configured by the customer. Its security-practices documentation states security logs are retained for 90 days; specific default retention periods for message content are not publicly documented in detail.
Pricing & Credits
Pricing model and the cost of a first message.
| Field | Telesign | Telnyx |
|---|---|---|
| Pricing model | Pay-as-you-go per-message/per-transaction pricing with volume-based enterprise contracts; public per-message rates are not transparently listed. | Pay-as-you-go per message billed per message part, with volume discounts and custom contracts for high-volume customers. |
| SMS starting price | Not published | $0.004 per outbound SMS message part (US, plus carrier fees) |
| Free developer credit | Yes | No |
What's the differenceTelesign and Telnyx are closely matched on pricing & credits — no material differences in the tracked fields.
Reach & Reliability
Global coverage and delivery dependability.
| Field | Telesign | Telnyx |
|---|---|---|
| Countries covered | 230 | 130 |
| Direct operator connections | Yes | Yes |
| Published uptime SLA | No published SLA | 99.99% (SLA) |
What's the differenceTelesign leads on Countries covered (230 vs 130 for Telnyx).
Company & Trust
Independent reviews and company profile.
| Field | Telesign | Telnyx |
|---|---|---|
| G2 rating | 4.3 | 4.7 |
| G2 reviews | 20 | 525 |
| Ownership | private | private |
| Employees | 500-1,000 | 201-500 |
What's the differenceTelnyx leads on G2 rating (4.7 vs 4.3 for Telesign); Telnyx leads on G2 reviews (525 vs 20 for Telesign).
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