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 | 4th of 7 → | 59 | 175 |
| <1M | 3rd of 7 → | 0 | 7 |
From June 19th to September 17th, Knock routed <1M messages through Telnyx and <1M through WhatsApp. Telnyx reported 175 status page updates over the last 90 days, while WhatsApp reported 7.
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 June 19th to September 17th. The top-line number is an average of these daily values: Telnyx averaged 459ms compared to 328ms for WhatsApp. Telnyx's highest daily p50 was 704ms This peak coincided with a major incident reported on Telnyx's status page (Edge Compute StatefulActor deploys and invocations degraded).; WhatsApp's was 891ms. WhatsApp is 131ms 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 778ms compared to 1012ms for WhatsApp. The highest daily p90 was 1038ms for Telnyx and 1210ms for WhatsApp This peak coincided with a critical incident reported on WhatsApp's status page (Resolved: Unknown service).. Telnyx handles these slower requests 234ms 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 1108ms at p99 while WhatsApp reached 1422ms. The highest daily p99 was 3509ms for Telnyx and 1920ms for WhatsApp, 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% |
|---|---|---|---|---|---|
| 0.02% | 0.55% | Aug 10 | 80 | 11 |
| 0.02% | 0.34% | Aug 24 | 83 | 8 |
Averaged across the date range, Telnyx shows a 0.02% daily error rate compared to 0.02% for WhatsApp. The highest single-day error rate was 0.55% for Telnyx and 0.34% for WhatsApp. Both providers show similar reliability levels, with error rates well within acceptable thresholds. 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
Started Sep 17, 2026 — Resolved Sep 17, 2026
Status: Complete Maintenance has completed Affected components Europe (Operational) US (Operational) Europe (Operational) US (Operational) Australia (Operational)
Ongoing since Sep 16, 2026
Status: Monitoring Our downstream partner has deployed a fix for garbled message bodies on 10DLC SMS to T-Mobile destinations. The issue impacted 10DLC senders assigned to 501(c)(3) tax-exempt campaigns predominantly. Test messages to T-Mobile destinations are now delivering intact. Affected components NORAM (Degraded performance)
Ongoing since Sep 16, 2026
Status: Scheduled We will be doing a maintenance on wireguard server in the Ashburn (DC2) region. No IP addresses will be changed, so impact should be limited to client re-handshake with the server. No customer action required. Affected components Programmable Wireless (Under maintenance)
Started Sep 16, 2026 — Resolved Sep 16, 2026
Status: Complete Maintenance has completed Affected components Programmable Wireless (Operational)
Ongoing since Sep 16, 2026
Status: Scheduled This maintenance has been rescheduled from September 18th to September 21st (06:00-09:00 UTC). The scope of work is unchanged. Affected components Programmable Wireless (Under maintenance)
Recent WhatsApp incidents
Recent status page incidents for WhatsApp
Started Jul 19, 2026 — Resolved Jul 19, 2026
We are currently experiencing high disruptions impacting WhatsApp Marketing Message API. This issue started on July 19th 1:10am PST. Our engineering teams are investigating the issue. We will provide another update within 1 hour or sooner if additional information is available.
Started Jul 6, 2026 — Resolved Jul 6, 2026
We are currently experiencing high disruptions impacting 2fa email deliveries on WhatsApp Business Account Management. Our engineering teams are investigating the issue. We will provide another update if additional information is available.
Started Jun 23, 2026 — Resolved Jun 23, 2026
We are currently experiencing high disruptions impacting sending messages on Coexistence - Messaging. This issue started at 2:24PM on June 24th. Our engineering teams are investigating the issue. We will provide another update within 1 hour or sooner if additional information is available.
Started Jun 23, 2026 — Resolved Jun 23, 2026
We are currently experiencing high disruptions impacting sending messages on Coexistence - Onboarding. This issue started at 2:24PM on June 24th. Our engineering teams are investigating the issue. We will provide another update within 1 hour or sooner if additional information is available.
Started Jun 23, 2026 — Resolved Jun 23, 2026
We are currently experiencing medium disruptions impacting the WhatApp Cloud API Calling. This issue started at 02:24PM GMT on June 24th. Our engineering teams are investigating the issue. We will provide another update within 4 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 459ms compared to 328ms for WhatsApp.
Which is more reliable, Telnyx or WhatsApp?
From June 19th to September 17th, Telnyx showed an error rate of 0.02% while WhatsApp showed 0.02%. 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 June 19th to September 17th compared to <1M for WhatsApp. Telnyx volume has remained stable, 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.