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–10M | 3rd of 7 ↓ | 74 | 173 |
| <1M | 4th of 7 ↑ | 1 | 16 |
From May 12th to August 10th, Knock routed 1M–10M messages through Telnyx and <1M through WhatsApp. Telnyx reported 173 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 May 12th to August 10th. The top-line number is an average of these daily values: Telnyx averaged 288ms compared to 320ms for WhatsApp. Telnyx's highest daily p50 was 743ms; WhatsApp's was 891ms. Telnyx is 32ms 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 615ms compared to 1004ms for WhatsApp. The highest daily p90 was 2295ms for Telnyx and 1295ms for WhatsApp. Telnyx handles these slower requests 389ms 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 1192ms at p99 while WhatsApp reached 1389ms. The highest daily p99 was 10115ms for Telnyx and 26296ms 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% |
|---|---|---|---|---|---|
| 0.17% | 6.47% | Aug 5 | 18 | 46 |
| 0.31% | 41.67% | Jun 12 | 82 | 8 |
Averaged across the date range, Telnyx shows a 0.17% daily error rate compared to 0.31% for WhatsApp. The highest single-day error rate was 6.47% for Telnyx and 41.67% for WhatsApp This peak coincided with a critical incident reported on WhatsApp's status page (Resolved: Cloud API - Calling).. Telnyx 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
Started Aug 10, 2026 — Resolved Aug 10, 2026
Status: Monitoring This incident was resolved on 15th of July but status page incorrectly remained open Affected components API V1 (Operational) US East Region (Operational) Kimi-K2.6 (Operational) Telnyx Storage (Operational) Kimi-K2.6 (Operational) GLM-5.1 (Operational) API V2 (Operational) Usage Reports (Operational) US Central Region (Operational) Mission Control Portal UI (Operational) API Gateway (Operational) US West Region (Operational) MiniMax-M2.7 (Operational)
Started Aug 10, 2026 — Resolved Aug 10, 2026
Status: Complete Maintenance has completed Affected components Programmable Wireless (Under maintenance)
Ongoing since Aug 9, 2026
Status: Scheduled The Wireless team will be optimising configuration parameters on the remaining Network Functions on the US East site. There will be rolling restarts of some components, which have the potential to cause disruption to active data sessions. These disruptions are not expected to last for more than 5 minutes. The number of components in DC2 necessitates 2 separate maintenance windows to cover all nodes. This would affect users connected in North, Central and South America as w
Ongoing since Aug 9, 2026
Status: Scheduled The Wireless team will be optimising configuration parameters on the remaining Network Functions on the US East site. There will be rolling restarts of some components, which have the potential to cause disruption to active data sessions. These disruptions are not expected to last for more than 5 minutes. This would affect users connected in North, Central and South America as well as the Caribbean. Affected components Programmable Wireless (Under mai
Ongoing since Aug 9, 2026
Status: Scheduled The Wireless team will be optimising configuration parameters on the remaining Network Functions on the Australian site. There will be rolling restarts of some components, which have the potential to cause disruption to active data sessions. These disruptions are not expected to last for more than 5 minutes. This would affect users connected in Australia, NewZealand and countries in Asia Pacific. Affected components Programmable Wireless (Under maintenan
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 288ms compared to 320ms for WhatsApp.
Which is more reliable, Telnyx or WhatsApp?
From May 12th to August 10th, Telnyx showed an error rate of 0.17% while WhatsApp showed 0.31%. 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–10M messages from May 12th to August 10th compared to <1M for WhatsApp. Telnyx is currently seeing declining volume, while WhatsApp is trending upward.
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.