Dial vs Project Blue

Compare Dial and Project Blue side by side: iMessage features, channels, developer tools, pricing and compliance, checked on each provider's own site.

Dial

Phone numbers with calls, SMS and iMessage for AI agents
Starting price
$3/month per standard number; $250/month per iMessage number
Free plan
$5 free credit, no credit card required

Project Blue

iMessage, SMS and FaceTime Audio lines inside your CRM
Starting price
$166/month per line, billed annually
Free plan
Free trial on a shared line, verified numbers only

Dial supports 44 of the 77 features compared here, and Project Blue supports 42.

Feature comparison

FeatureDialProject Blue
iMessage messaging
iMessage
SupportedNeeds an iMessage number, provisioned through the API. Pay-as-you-go accounts only.
Supported
Group chats
SupportedSend to and read iMessage groups the number was added to. Polls work in groups; replies and reactions do not.
SupportedSend to groups of 2 to 32 by API. Not on trial accounts, and group sends do not sync to the CRM.
Group management
Not supportedDocs say Dial cannot create a group, join one or accept an invite link.
PartialGroups are created by sending to a set of numbers. No add or remove member endpoints documented.
Group name and photo
Not listedGroup names are read live from the line; no way to set a name or photo is documented.
PartialgroupName can be set when a group is created. No group photo documented.
Mentions
Not listed
Not listed
Tapbacks
SupportedSix tapback names or any single emoji. Sent only on inbound messages; received on message.received.
PartialSend or remove the six classic tapbacks on inbound iMessages. Receiving reactions is not documented.
Threaded replies
SupportedNative threaded replies to inbound iMessage or RCS messages, one-to-one only.
Not listed
Typing indicators
PartialSend only, one-to-one and in groups. No inbound typing events are documented.
PartialSend only, iMessage only, into an existing conversation. Inbound typing events not documented.
Read receipts
PartialReports when recipients read your iMessages. No way to mark inbound messages read.
Not listed
Edit and unsend
Not listed
Not listed
Message effects
Not listed
Supported4 bubble and 9 screen effects through the effect field. iMessage only.
Animated text effects
Not listed
Not listed
Stickers
Not listed
Not listed
Formatted text
Not listed
Not listed
Attachments
SupportedOne attachment per iMessage, 5 MB. Images, audio, video, PDF, vCard and iCalendar. No HEIC.
SupportedImages, videos and vCards by URL.
Live Photos
Not listed
Not listed
Rich link previews
Not listed
Not listed
Voice messages
SupportedA single audio file on an iMessage number is sent as a native voice message.
SupportedAudio files sent as voice memos, plus AI text-to-speech voice memos.
Contact cards
SupportedSend .vcf files as media. Inbound cards arrive as text/vcard media (since October 2026).
SupportedVCF files through mediaAttachmentUrl.
Polls
Supported2 to 10 options, one-to-one or in iMessage groups. Votes arrive as events with a live tally.
Not listed
Chat backgrounds
Not listed
Not listed
Location sharing
Not listed
Not listed
iMessage apps
Not listed
Not listed
Live app cards
Not listed
Not listed
Sender name and photo
SupportedSet the first name, last name and photo shown beside the number's iMessages.
SupportedSet, read and share a line's Share Name and Photo card by API.
FaceTime calls
Not listed
PartialFaceTime Audio only, outbound and inbound, on FaceTime-enabled accounts. Not on trials.
Delivery status
PartialiMessage sends report no delivery receipts; delivery is inferred once a read arrives.
PartialMessages carry a status field such as delivered. Webhooks cover only inbound and outbound messages.
iMessage availability check
SupportedLookup endpoint checks whether any number can receive iMessage or WhatsApp.
Supported
Focus and Notify Anyway
Not listed
Not listed
Numbers and delivery
Managed lines
SupportediMessage numbers are provisioned through the API, with asynchronous setup. No Mac or device needed.
SupportedNo iPhone, Mac or SIM needed. Lines are set up remotely, usually within one business day.
Dedicated numbers
SupportedEach number belongs to your account. Docs say only US numbers can be provisioned now.
SupportedA dedicated line per rep, never shared. New lines are requested by API and provisioned by the team.
Shared numbers
Not listed
PartialTrial accounts only: a shared line that can reach verified numbers.
Bring your own number
Not listed
SupportedExisting numbers can be ported to Project Blue's carrier partner.
Line pooling
Not listedDocs suggest splitting recipients across several iMessage numbers by hand; no automatic pooling found.
SupportedSends without lineId are load balanced across your lines.
SMS fallback
SupportediMessage numbers fall back to RCS or SMS automatically, at no message charge.
SupportedFalls back to SMS from the same line when iMessage is unavailable.
RCS fallback
Supported
Not listedHomepage describes fallback from iMessage to WhatsApp to SMS. RCS fallback is not described.
Outbound-first messaging
SupportedCold outbound allowed. Each iMessage number can start up to 50 new conversations a day.
SupportedLines are sold as outbound-ready. Guidelines rule out mass outbound iMessage.
Calls on the iMessage number
SupportediMessage numbers also place and receive AI voice calls, or forward inbound calls.
SupportedDialer and FaceTime Audio calls from the same number as the messaging line.
Other channels
SMS
SupportedTwo-way SMS; MMS to US and Canada. Subscription accounts can text US numbers only.
Supported
RCS
PartialOnly as automatic fallback from iMessage numbers; not a channel you can pick.
PartialRCS for rich media was rolled out in 2026. The API lists RCS as inbound only.
WhatsApp
BetaBeta, enabled per account. Runs on an iMessage number, one attachment per message.
PartialHomepage lists WhatsApp as a fallback step. No WhatsApp option in the API, and llms.txt says it is not a WhatsApp API.
Telegram
Not supportedNot offered
Not supportedNot offered
Slack
Not supportedNot offered as a channel. A Zapier app can forward messages to Slack.
PartialSlack notifications for inbound replies. Not a messaging channel.
Email
Not supportedNot offered
Not supportedDeveloper page says it is not a general email API.
Phone calls
SupportedInbound and outbound AI voice calls with transcripts.
SupportedCloud dialer with inbound, outbound, routing, recording and voicemail, plus a browser calling SDK.
Apple Messages for Business
Not listedDocs say iMessage numbers send over Apple Messages for Business, but no business chat product is documented.
Not supportedNot offered
Unified channel API
SupportedOne messages endpoint and event format for SMS, iMessage and WhatsApp, plus calls.
PartialOne send endpoint covers iMessage and SMS. Calls and FaceTime use separate endpoints.
Developer tools
REST API
Supported
SupportedREST API with Bearer keys and an OpenAPI spec.
TypeScript SDK
Supported@getdial/sdk
Partial@tryprojectblue/dialer is a browser SDK for phone calls only. No messaging SDK.
Python SDK
Supporteddial-sdk
Not listed
Other SDKs
Not supportedSDK overview lists only Node and Python clients, plus agent framework packages.
Not listed
CLI
Supporteddial CLI, installed with a shell script or npx. Needs Node 22 or later.
Not listed
Webhooks
Supported
SupportedInbound and outbound message events and inbound FaceTime call events.
Signed webhooks
SupportedHMAC-SHA256 over timestamp and body, X-Dial-Signature header.
Not listedWebhook docs do not mention signatures.
MCP server
SupportedRemote server with OAuth at getdial.ai/mcp, or local stdio through the CLI.
SupportedRemote MCP server with OAuth 2.1, plus an optional Claude Code plugin.
Open source
PartialThe Chat SDK adapter is MIT on GitHub. The platform is closed.
PartialThe dialer SDK is MIT licensed on npm. The platform is closed.
Self-hosting
Not listedSelf-Hosted mode only means calls are driven by your own agent server; the platform itself is hosted.
Not listedHosted service on Project Blue lines. Self-hosting is not mentioned.
Local testing
Not listed
Not listedTrial accounts send real messages to verified numbers; docs say they are not a simulator.
Custom channel providers
Not listed
Not listed
Event replay
PartialWebhooks retry up to 6 attempts. The live stream replays only about 2 minutes of missed events.
Not supportedDocs say webhooks have no retries and failed deliveries are not replayed.
OpenTelemetry
Not listed
Not listed
No-code integrations
SupportedZapier app with message and call triggers, and send, call and provision actions.
SupportedGoHighLevel conversation provider with workflow actions and triggers. llms.txt also lists Zapier.
CRM integrations
Not listed
SupportedHubSpot and Close CRM. Salesforce is not listed.
Built for AI agents
Agent framework
PartialHosted AI voice agent runs calls from a prompt. Messaging is send and receive only.
Not listed
Agent framework integrations
SupportedLangChain, Vercel AI SDK, CrewAI, AutoGen, Microsoft Agent Framework and a Vercel Chat SDK adapter.
Not listed
Streaming replies
Not listed
Not listed
Agent group chats
Not listed
Not listed
Human handoff
PartialThe voice agent can transfer a call to a person. No handoff for messaging.
PartialReps reply in the CRM inbox and can join group threads. No agent handoff controls documented.
Audit logs
Not listed
Not listed
Message history API
SupportedList and search messages, up to the 100 most recent per request.
SupportedList and get messages, inbound and outbound, with filters.
Plans and compliance
Free plan
Supported$5 of free credit, no card. Free accounts are capped at 5-minute calls and 2 concurrent calls.
PartialFree trial on a shared line to verified numbers. Some endpoints are off on trial.
Public pricing
Supported
Supported$166/month per line billed annually, or $199/month per line on a 12-month plan.
No per-message fees
PartialMessages from a $250/month iMessage number are free. SMS on standard numbers is billed per message.
SupportedFlat per-line pricing with unlimited texting under fair use.
Uptime SLA
PartialUptime SLA listed for Enterprise only.
Not listedSite cites a 99.9% uptime record and a public status page. No contractual SLA found.
Isolated infrastructure
Not listed
PartialEach rep gets a dedicated line that is never shared. Other infrastructure is not described.
SOC 2 Type II
PartialSite says SOC 2 certified. Report type and a report are not published.
Not listed
GDPR
SupportedDPA covers GDPR and UK GDPR, with Standard Contractual Clauses.
PartialPrivacy policy lists GDPR and UK GDPR rights. No DPA found.

Checked on each provider's own site and docs on 2026-10-25. “Not listed” means the provider does not mention it.

Pricing

Dial

Pay-as-you-go starts with $5 of free credit. A standard number is $3 a month plus metered SMS and calls, an iMessage number is $250 a month with free messages, and Enterprise is custom.

Pricing model: per number plus metered usage; iMessage messages free on an iMessage number

Source

Project Blue

Flat per-line pricing: $166 a month per line billed annually or $199 a month per line on a 12-month plan, with a free trial on a shared line.

Pricing model: flat per line

Source

Which should you choose?

Choose Dial if you need threaded replies, read receipts, polls and RCS fallback.

Choose Project Blue if you need group management, group name and photo, message effects and FaceTime calls.

Frequently asked questions