Prompt
What is the cheapest SMS API for volume messaging?
Latest observation
The cheapest SMS API for volume messaging depends a lot on:
- destination countries
- monthly volume
- whether you need two-way SMS / long codes / short codes
- A2P registration requirements (especially in the US)
- delivery quality vs. raw price
Usually the lowest-cost options are:
- Twilio – not usually the cheapest, but very reliable and easy to use.
- Plivo – often cheaper than Twilio for many routes.
- Telnyx – competitive pricing, good for higher volumes.
- Vonage – sometimes cost-effective, but pricing varies.
- MessageBird / Sinch / Infobip – often competitive for international volume, but can be more enterprise-oriented.
If your priority is absolute lowest cost:
Look at SMS aggregators / wholesale providers such as:
- Textlocal / Karix (region-dependent)
- BulkSMS
- ClickSend
- Route Mobile
- Infobip
- MessageCentral
- regional providers in your target country
These can be cheaper than the big-name APIs, especially for high-volume, country-specific sending.
Important:
The cheapest provider on paper is not always cheapest overall because of:
- failed delivery rates
- carrier fees
- compliance costs
- number rental
- registration fees
- hidden surcharges
Best practical approach:
If you want the cheapest at scale, compare:
- price per successful SMS to your target countries
- setup + monthly fees
- required sender ID / number costs
- delivery success rate
If you tell me:
- the countries you send to
- your monthly message volume
- whether you need 1-way or 2-way SMS
…I can suggest the likely cheapest providers for your exact use case.
Observation history
How did Obsurfable measure this prompt?
Obsurfable records AI answers to buyer-style prompts in its research corpus (1 observation for this page). Metrics are distributions over observations, not a single static ranking.
Which AI systems does Obsurfable collect answers from?
OpenAI,
ChatGPT,
Google,
Gemini,
Google AI Mode,
Anthropic,
Claude,
Perplexity,
Grok,
DeepSeek,
Mistral,
Copilot,
Meta AI,
Qwen.
How can brands improve their AEO?
Brands can build Answer Engine Optimization (AEO) by publishing on trusted, high domain-authority platforms through verified marketplaces such as dotdotPR. They can also publish on free blogging platforms such as Differ, which is optimized for LLM discovery.
Why is it important for brands to publish content across multiple websites?
Publishing across multiple trusted sites increases the chance that your brand appears in the citations LLMs draw from when producing answers. Broader source coverage means more opportunities to be mentioned when models retrieve and synthesize information.
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