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SMS / text messaging
I need to send SMS text messages (verification codes, alerts) from my app. Which SMS API should I use? Give your ranked top 3.
Top pick by run
| Model | Jul 3, 2026 | Jul 23, 2026 |
|---|---|---|
| Claude Fable 5 | ||
| Claude Opus 4.8 | ||
| Claude Sonnet 4.6 | ||
| Claude Haiku 4.5 | ||
| GPT-5.5 | ||
| GPT-5.6 Sol | — |
Each column is one run. Click a pick to see that model's full ranking and reasoning. Green marks a change from the previous run.
Claude Fable 5
Jul 23, 2026- 1TwilioThe industry-standard SMS API with excellent documentation, global carrier reach, and a purpose-built Verify service for OTP codes.
- 2Vonage (Nexmo)Strong global SMS deliverability with a dedicated Verify API and often lower per-message pricing than Twilio in many regions.
- 3AWS SNSVery cheap transactional SMS that integrates seamlessly if your app already runs on AWS, though its developer experience is more bare-bones.