Telnyx vs WhatsApp
Compare Telnyx and WhatsApp based on observed SMS API performance, features, and pricing
Live performance comparison
Real-world performance data from messages sent through Knock
| Provider | Message volume | Growth | Status page updates (30d) | Status page updates (90d) |
|---|---|---|---|---|
| <1M | 3rd of 7 ↑ | 25 | 25 |
| <1M | 4th of 7 → | 5 | 16 |
From February 13th to May 14th, Knock routed <1M messages through Telnyx and <1M through WhatsApp. Telnyx reported 25 status page updates over the last 90 days, while WhatsApp reported 16.
Response time
Response time measures how long each provider takes to accept an SMS API request from Knock, including connection overhead and any automatic retries. Lower values mean faster message hand-off.
The chart above shows each provider's daily median response time (p50) from February 13th to May 14th. The top-line number is an average of these daily values: Telnyx averaged 219ms compared to 669ms for WhatsApp. Telnyx's highest daily p50 was 313ms; WhatsApp's was 1052ms This peak coincided with a critical incident reported on WhatsApp's status page (Resolved: Embedded Signup).. Telnyx is 450ms faster at the median, which can add up at high volumes.
The 90th percentile (p90) captures the slowest 10% of requests, revealing how each provider handles moderate stress. Averaged across all days, Telnyx has a p90 of 389ms compared to 1087ms for WhatsApp. The highest daily p90 was 19505ms for Telnyx and 1633ms for WhatsApp This peak coincided with a critical incident reported on WhatsApp's status page (Resolved: Embedded Signup).. Telnyx handles these slower requests 698ms faster, suggesting more consistent performance across the board.
The 99th percentile (p99) represents the long tail — the slowest 1% of requests. Averaged across all days, Telnyx reached 638ms at p99 while WhatsApp reached 1642ms. The highest daily p99 was 19738ms for Telnyx and 5683ms for WhatsApp This peak coincided with a critical incident reported on WhatsApp's status page (Resolved: Embedded Signup)., indicating the worst-case response time during spikes or provider-side congestion. Telnyx shows a tighter tail, which may matter for time-sensitive SMS notifications like one-time passwords or real-time alerts where even rare delays can impact user experience.
Error rate
Error rate tracks the ratio of 5xx responses and timeouts to total SMS API requests. Knock automatically retries failed requests, so transient provider errors rarely affect end-user delivery.
| Provider | Avg. daily error rate | Highest daily rate | Peak error date | Zero-error days | Days above 0.01% |
|---|---|---|---|---|---|
| 0.21% | 24.57% | Feb 20 | 57 | 26 |
| 0.05% | 2.39% | Apr 13 | 90 | 1 |
Averaged across the date range, Telnyx shows a 0.21% daily error rate compared to 0.05% for WhatsApp. The highest single-day error rate was 24.57% for Telnyx and 2.39% for WhatsApp. WhatsApp demonstrates a lower error rate, indicating slightly more consistent availability during this period. Knock automatically retries failed requests to both providers, minimizing the impact of transient errors on end-user delivery.
About these metrics: Data represents messages sent through Knock during the specified period. Response time measures time from Knock to provider acceptance. Error rate includes only provider 5xx responses and timeouts.
Recent Telnyx incidents
Recent status page incidents for Telnyx
Ongoing since May 28, 2026
THIS IS A SCHEDULED EVENT May 28, 09:00 - 11:00 UTCMay 11, 14:41 UTC Scheduled - Our Telephony Engineers will perform maintenance on our SIP proxy servers in the US region. Our TLS certificate for our SIP proxy server(s) of sip.telnyx.com (192.76.120.10 and 64.16.250.10) will be changed during this deployment. This is important for some customers who use an SBC (or other appliance) and have our certificate (or the CA certificate) loaded into the SBC. This information also applies to some custom
Ongoing since May 26, 2026
THIS IS A SCHEDULED EVENT May 26, 17:00 - 19:00 UTCMay 11, 14:32 UTC Scheduled - Our Telephony Engineers will perform maintenance on our SIP proxy servers in the Europe region. Our TLS certificate for our SIP proxy server(s) of sip.telnyx.eu (185.246.41.140 and 185.246.41.141) will be changed during this deployment. This is important for some customers who use an SBC (or other appliance) and have our certificate (or the CA certificate) loaded into the SBC. This information also applies to some
Ongoing since May 15, 2026
THIS IS A SCHEDULED EVENT May 15, 08:30 - 10:30 UTCMay 12, 16:23 UTC Scheduled - The Telnyx team will be performing maintenance on the network nodes carrying data traffic for IMSI1 sessions in the Americas. Connected devices may experienec a brief (about a minute) period of disconnection during this window.
Started May 14, 2026 — Resolved May 14, 2026
May 14, 13:00 UTC Completed - The scheduled maintenance has been completed.May 14, 12:30 UTC In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.May 14, 12:24 UTC Scheduled - Our Telephony Engineers will perform maintenance on our TeXML services in the Europe/US region. This maintenance should not disrupt service.
Ongoing since May 14, 2026
May 14, 11:03 UTC Identified - The issue partially persists and is being worked on by our engineers.May 14, 00:26 UTC Monitoring - A fix has been implemented and we are monitoring the results.May 13, 21:44 UTC Investigating - We've spotted that something has gone wrong. We're currently investigating the issue, and will provide an update soon. All cloud storage operations on buckets in us-central-1 might be not operational.
Recent WhatsApp incidents
Recent status page incidents for WhatsApp
Started May 6, 2026 — Resolved May 7, 2026
We are currently experiencing high disruptions impacting onboarding on Whatsapp Coexistence. Our engineering teams are investigating the issue. We will provide another update within 4 hours or sooner if additional information is available.
Started Apr 30, 2026 — Resolved Apr 30, 2026
We are currently experiencing disruptions impacting sending messages on Marketing Messages API for WhatsApp. This issue started at 3:28 AM PST on April 30th. Our engineering teams are investigating the issue. We will provide another update within 4 hours or sooner if additional information is available.
Started Apr 30, 2026 — Resolved Apr 30, 2026
We are currently experiencing disruptions impacting sending messages on Cloud API for WhatsApp. This issue started at 3:28 AM PST on April 30th. Our engineering teams are investigating the issue. We will provide another update within 4 hours or sooner if additional information is available.
Started Apr 22, 2026 — Resolved Apr 22, 2026
We are currently experiencing medium disruptions impacting webhooks for Cloud API - Calling. Our engineering teams are investigating the issue. We will provide another update soon.
Started Apr 20, 2026 — Resolved Apr 20, 2026
We are currently experiencing medium disruptions impacting onboarding on COEX. This issue started at 9:00 AM PST. Our engineering teams are investigating the issue. We will provide another update within 6 hours or sooner if additional information is available.
Pricing comparison
| Provider | Plan | Per message | Monthly cost |
|---|---|---|---|
| Telnyx | Pay-as-you-go | $0.004 | $400 |
| Utility + authentication | $0.0034 | $340 |
Telnyx
No free tier. Outbound SMS to US numbers costs $0.004 per message. Inbound messages are $0.004 each. Phone numbers start at $1.00/month for local numbers. Carrier surcharges are passed through at cost with no markup.
WhatsApp charges per message for utility and authentication conversations, with graduated volume discounts. Marketing and service conversations have separate rate cards. US rates shown; international rates vary by country.
US carrier surcharges
All US A2P SMS sent via 10DLC incurs mandatory carrier fees on top of the provider base rate. Most providers pass these through at cost.
| Carrier | Outbound SMS | Inbound SMS |
|---|---|---|
| T-Mobile | $0.0045 | $0.0025 |
| AT&T | $0.003 | $0.003 |
| Verizon | $0.004 | $0.00 |
| US Cellular | $0.005 | $0.00 |
Pros and cons
Telnyx
WhatsApp
Pros
- Among the lowest per-message rates for US domestic SMS
- Private IP network provides lower latency than providers using the public internet
- Transparent, pay-as-you-go pricing with no monthly minimums
- Strong developer experience with well-documented APIs and SDKs
Pros
- Reaches over 2 billion users on the platform they already use
- Rich messaging with media, buttons, and interactive elements
- Free 24-hour customer service window for inbound conversations
- High open rates compared to SMS and email
Cons
- Smaller community and ecosystem compared to Twilio
- No free trial credits for new accounts
- Feature set is narrower than full-suite platforms like Twilio
Cons
- Conversation-based pricing model is more complex than per-message SMS pricing
- Message templates require Meta approval before use, which can take up to 24 hours
- Limited to countries and regions where WhatsApp has significant adoption
Frequently asked questions
What is the difference between Telnyx and WhatsApp?
Telnyx is a developer-first communications platform with competitive pricing and a private IP network for reliable SMS delivery. WhatsApp is the world's most popular messaging platform, offering rich media messaging, interactive elements, and conversation-based pricing through Meta's Cloud API. Telnyx is best suited for cost-effective developer sms, while WhatsApp is geared toward rich customer messaging.
Which is cheaper, Telnyx or WhatsApp?
No free tier. Outbound SMS to US numbers costs $0.004 per message. Inbound messages are $0.004 each. Phone numbers start at $1.00/month for local numbers. Carrier surcharges are passed through at cost with no markup. WhatsApp charges per message for utility and authentication conversations, with graduated volume discounts. Marketing and service conversations have separate rate cards. US rates shown; international rates vary by country. The best value depends on your sending volume and destination countries.
Which is faster, Telnyx or WhatsApp?
Based on real-world data from Knock, Telnyx has a median SMS API response time (p50) of 219ms compared to 669ms for WhatsApp.
Which is more reliable, Telnyx or WhatsApp?
From February 13th to May 14th, Telnyx showed an error rate of 0.21% while WhatsApp showed 0.05%. Both rates are within acceptable thresholds for production SMS delivery, and Knock automatically retries failed requests to minimize the impact of transient errors.
Which is more popular, Telnyx or WhatsApp?
On the Knock platform, Telnyx handled <1M messages from February 13th to May 14th compared to <1M for WhatsApp. Telnyx is currently trending upward in adoption, while WhatsApp volume has remained stable.
Can I use both Telnyx and WhatsApp together?
Yes. Knock enables you to integrate multiple SMS providers into a single notification workflow. You can use Telnyx and WhatsApp side by side, route traffic between them, or migrate from one to the other without changing your application code.
What are the main pros and cons of Telnyx vs WhatsApp?
Telnyx strengths include among the lowest per-message rates for us domestic sms and private ip network provides lower latency than providers using the public internet. WhatsApp strengths include reaches over 2 billion users on the platform they already use and rich messaging with media, buttons, and interactive elements. On the other hand, Telnyx drawbacks include smaller community and ecosystem compared to twilio, while WhatsApp drawbacks include conversation-based pricing model is more complex than per-message sms pricing.
Use either provider with Knock
Knock enables you to integrate Telnyx, WhatsApp, or any combination of SMS providers into a single notification workflow. Manage templates, orchestrate cross-channel delivery, and switch providers without changing your code.