# Honest comparisons.

Compare the workflow you need to run: send an application message, launch a campaign, receive a reply or bring a new market online. Start with the customer outcome, then evaluate the API, sender setup, delivery evidence and operating model.

Use the [SMS platform overview](/sms-api) to see how Bird connects campaigns, application messages and replies. The provider comparisons below examine concrete integration differences, including the send call, registration, events, SDKs and agent tools.

If you find a claim on these pages that doesn't hold up, mail [devs@bird.com](mailto:devs@bird.com) and we'll fix it.

[Start for Free](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Fsms%2Fonboarding)

[Contact sales](/demo?product=sms&source_page=%2Fsms-api%2Fcompare)

## Set up with your agent

[Read the agent setup guide](/docs/ai/set-up-your-agent)

Copy this prompt into your coding agent:

```text
Bird connects customer communications, data and automation. Help me build with Bird using my coding agent.
1. Read https://bird.com/docs/ai/set-up-your-agent.md and follow its setup workflow for this client. Use an existing connected Bird MCP server or signed-in CLI when available.
2. Read the product guide for the task I want to complete and inspect my existing integration. Identify the workspace, available operations and required setup.
3. Help me complete a first example for the product and destination I choose. Follow the operation through to its actual result, explain any uncertainty, and help me choose the next step.

First task: Read the provider-specific SMS migration guide. Prepare a test plan for sender registrations, consent, message fields, webhook signatures and delivery states. Keep the current provider running until I approve a cutover.

Use this Bird page as the starting context: https://bird.com/sms-api/compare
Read its Markdown alternative and linked guides. Keep the first example relevant to this page and the customer outcome I choose. Preserve the supplied campaign context when following Bird signup or sales links.
```

[Read customer stories](/customers)

[Explore Enterprise](/enterprise)

- [Airwallex](/customers/airwallex)
- [Glovo](/customers/glovo)
- [Zillow](/customers/zillow)
- Uber
- [Binance](/customers/binance)
- Adobe
- Meta
- PayPal
- Pinterest
- Square
- [Al Jazeera](/customers/aljazeera)
- [Aramex](/customers/aramex)
- [Bazaar Technologies](/customers/bazaar)
- [ComparaOnline](/customers/compara)
- [Emma](/customers/emma)

## Which SMS API fits an inbound workflow?

Choose Bird when you need inbound text and delivery events on workspace webhooks, with message records you can retrieve through the API. Before choosing a provider, test a receiving number in your target market and the failure paths below.

| Your task | Check before choosing | Bird workflow and evidence |
| --- | --- | --- |
| Receive texts on a number | Confirm number availability, SMS capability and registration requirements for your country and sender type. An alphanumeric sender cannot receive replies. | Search [number inventory](/docs/guides/numbers/buying-numbers) by country and SMS capability. Check [one-way and two-way SMS](/explained/sms/what-is-the-difference-between-one-way-and-two-way-sms) before choosing a sender. |
| Read an incoming text | Check whether the webhook includes message content and both numbers, and whether you can retrieve the stored message later. | Bird's [sms.received event](/docs/guides/sms/events) carries text, segment details, sms_id, from and to. The [message API](/docs/api/reference/get-sms-message) retrieves the stored record. |
| Match a reply to your application | Keep conversation state for the subscriber and receiving number. If several requests are open for that pair, use application context to decide which one the reply answers. | Use from and to on [incoming events](/docs/guides/sms/events) to find that pair. Match outbound delivery events by sms_id; Bird echoes the send's metadata and tags for your own references. |
| Authenticate events | Verify the signature against the raw request body and reject stale timestamps before acting on an inbound text or delivery report. | Bird signs [webhook deliveries](/docs/guides/webhooks#verify-signatures) using Standard Webhooks. The SDK verifies signatures and timestamps; your handler deduplicates on webhook-id. |
| Recover from retries | Test a webhook timeout separately from a send timeout. Repeated event delivery and a repeated send request need separate deduplication. | Queued [webhook deliveries](/docs/guides/webhooks#delivery-semantics) can be retried and arrive out of order. Inspect the message record when investigating missing evidence. Reuse an [Idempotency-Key](/docs/guides/idempotency) when retrying the same send within the key's retention window. |
| Decide whether a message arrived | Separate API acceptance, carrier handoff and a delivery receipt. A delivered SMS does not prove the recipient read it. | Bird distinguishes [sms.accepted, sms.sent and sms.delivered](/docs/guides/sms/events), alongside failure events. A [delivery receipt](/explained/sms/what-is-a-delivery-receipt) reports a delivery outcome; inspect the [message timeline](/docs/guides/sms/sms-log) when investigating. |

## Every SMS comparison

Review each provider’s strengths, the integration differences, side-by-side code and the work involved in switching. Use the linked documentation to check the details that matter to your application.

- [Twilio](/sms-api/compare/bird-vs-twilio): Twilio organizes messaging around established APIs and Messaging Services. Compare Twilio’s Messaging Services and helper libraries with Bird’s shared sending and registration API, typed client and hosted workspace tools.
- [Plivo](/sms-api/compare/bird-vs-plivo): Plivo combines a familiar send API with PowerPacks. Both use JSON requests and provide API registration. Compare sender selection, delivery callbacks, SDK coverage and the way an agent operates each platform.
- [Telnyx](/sms-api/compare/bird-vs-telnyx): Telnyx combines messaging profiles, APIs and hosted agent tools. Both use JSON, bearer authentication and familiar message fields. Both offer hosted MCP access. Compare messaging profiles, declared message intent, retry contracts and SDK coverage.
- [Bandwidth](/sms-api/compare/bird-vs-bandwidth): Bandwidth is a licensed US carrier (CLEC) that owns and operates its own network. They register 10DLC over an API as a Campaign Registry partner, and their fields carry over cleanly. Bird keeps sending, registration and delivery events under one host and one key, where theirs are two products on two hosts.
- [Sinch](/sms-api/compare/bird-vs-sinch): Sinch offers batch sending and detailed reporting controls. Their unified SDK carries Java and .NET, for which Bird does not ship a server SDK, and a batch tunes its own delivery reporting. Bird keeps sending, registration and delivery events on one host, adds safe retries and a category on every free-text send, and hosts the agent surface.
- [Infobip](/sms-api/compare/bird-vs-infobip): Infobip combines grouped sending with hosted product tools. Compare Infobip’s nested SMS payload and per-message reporting with Bird’s flat single-message request and workspace events. Both provide hosted MCP access; their SDK catalogues differ.

## Keep reading

- [Build two-way SMS](/sms-api/features/two-way): Receive incoming texts and send replies from your number.
- [Migrate from Bird Connectivity Platform](/docs/guides/sms/migrate/connectivity-platform): Map Connectivity Platform sends and status reports to Bird's regional API and signed webhooks.
- [Bird SMS](/sms-api): The send API, senders, destinations, and what the channel covers.
- [Migrate SMS from Twilio](/docs/guides/sms/migrate/twilio): Twilio's Messages API mapped field by field onto Bird's send.
- [Twilio alternatives](/alternatives/twilio): The same providers as a roster rather than one at a time, for a reader still drawing up a shortlist.
- [Sinch alternatives](/alternatives/sinch): Read against Sinch, whose portfolio question differs from Twilio's.
- [SMS pricing](/pricing/sms): Published outbound rates per country, with carrier fees itemised separately.
- [SMS resource library](/sms-api/resources): Find guides, explained answers and tools for your next step.

## Evaluate Bird with your own workflow.

Bring a representative message, your target markets and the events your application needs. Build a test integration or review the migration with an SMS specialist.



## Related resources

- [Plan an SMS migration](/docs/guides/sms/migrate) (docs)
- [Choose a sender for your markets](/explained/sms/which-sms-sender-type-should-i-use) (answer)
- [Check your message segments](/tools/sms-segment-calculator) (tool)