AgentPhone (YC S26) and Dial are the two platforms built specifically to give AI agents phone numbers — with near-identical headline pricing. The real differences are channels, international reach, and pricing envelopes.
TL;DR
This is the closest matchup on this list: AgentPhone (agentphone.ai, YC Spring 2026) is built on the same thesis as Dial — agents need real phone numbers — with the same architecture (webhook or hosted voice, text-in/text-out) and identical headline rates: $3/month numbers, $0.13/$0.22 per voice minute, $0.02 SMS, $5 free credit. The differences are at the edges, and they matter: Dial ships WhatsApp today (AgentPhone lists it as coming soon), covers SMS to 200+ countries and international numbers (AgentPhone is US/Canada-only), and offers a $20/month flat-rate envelope with US calls and SMS included. AgentPhone counters with rich iMessage extras like group chats and tapbacks. Two young platforms, one design — the tiebreakers are reach and what's actually shipped.
| Dial | AgentPhone | |
|---|---|---|
| What it is | Communication stack for AI agents — number, voice, SMS, WhatsApp, iMessage in one API | Phone numbers for AI agents — voice, SMS/MMS, iMessage via API (YC S26) |
| Phone numbers | $3/mo · US, Canadian, and international numbers | $3/mo · US and Canada only (max 10 self-serve) |
| Voice pricing | $0.13/min with your own LLM · $0.22/min managed | $0.13/min webhook mode · $0.22/min hosted mode |
| SMS | $0.02/msg US · 200+ countries in 7 price tiers | $0.02/msg · US/Canada; outbound US SMS requires 10DLC registration |
| Shipped — same number, 180+ countries | Advertised as coming soon; not in the developer docs | |
| iMessage | $250/mo dedicated number, messages free, cold outbound, automatic RCS/SMS fallback | Supported with group chats, reactions, tapbacks; cold outreach capped at 50 new contacts/day/line |
| Flat-rate option | $20/mo per number — US calls + US SMS included ($192/yr annual) | Pay-as-you-go only |
| Agent self-provisioning | Yes — CLI, skills.md, or remote MCP with OAuth | Yes — MCP server + Claude Code skill |
| MCP uptime — 30 days (Smithery) | 99.9% · quality score 98/100 | 38.0% · quality score 71/100 |
| SDKs & integrations | SDKs: Node, Python, LangChain, Vercel AI SDK, CrewAI, AutoGen, MS Agent Framework · Agent clients: Claude Code, Cursor, Codex, OpenClaw, NanoClaw, Hermes, Vercel Chat SDK | Python, TypeScript; LangChain, Google ADK, Vercel Chat SDK |
| Free tier | $5 credit, no credit card | $5 credit, no credit card |
Based on each product's public documentation and published pricing as of July 5, 2026. Spotted something out of date? Email [email protected] and we'll fix it.
AgentPhone (agentphone.ai — note: agentph.one is an unrelated product) is a Y Combinator Spring 2026 startup offering "phone numbers for AI agents." US and Canadian numbers provision instantly at $3/month; inbound calls stream to your webhook as text ($0.13/min) or a hosted LLM answers end-to-end ($0.22/min); SMS runs $0.02/message. Channels are voice, SMS, MMS, and iMessage — including group chats, reactions, and tapbacks — with WhatsApp and RCS advertised as coming soon. It ships Python and TypeScript SDKs, an MCP server, a Claude Code skill, and integrations with LangChain, Google ADK, and Vercel; outbound US SMS requires 10DLC registration, and iMessage cold outreach is capped at 50 new contacts per day per line.
Dial is the communication stack for AI agents: provision a real phone number in about 10 seconds and your agent can place and receive voice calls, send and receive SMS in 200+ countries, message on WhatsApp, and reach iMessage with automatic RCS/SMS fallback — all through one REST API, CLI, or MCP server. Pricing is all-in: $3/month per number pay-as-you-go (or $20/month flat-rate with US calls and SMS included), $0.13/min for calls with your own LLM, $0.22/min fully managed. $5 free credit, no credit card.
AgentPhone is the most direct competitor Dial has, and honestly the most validating one: a YC-backed team building on the same premise — the telecom stack was built for humans, and agents need numbers of their own. The architecture rhymes down to the details: calls arrive at your webhook as text and you reply in text; or a hosted mode runs the model end-to-end. Even the rates match line for line: $3 numbers, $0.13 and $0.22 voice minutes, $0.02 messages, $5 to start.
So this page can't be decided on headline pricing — it's decided on what each platform has actually shipped, how far its reach extends, and how the pricing envelopes work at production volume.
On channels the platforms diverge more than the marketing suggests.
AgentPhone provisions US and Canadian numbers, with more countries listed as coming soon. Dial provisions US, Canadian, and international numbers, sends SMS to 200+ countries, and carries WhatsApp — the channel that actually matters outside North America — on the same identity.
If your agent's world is entirely +1, this row is a tie. If it ever talks to a customer in London, São Paulo, or Tel Aviv, it's not.
Identical pay-as-you-go rates diverge once an agent runs hot. A support agent doing 40 hours of calls a month costs $312–$528 metered — on either platform. Dial's flat-rate plan caps that: $20/month per number with all US calls and US SMS included, $192/year if you commit annually. AgentPhone is pay-as-you-go only.
Smaller texture differences: AgentPhone bills voice per second with a 1¢ call minimum and offers add-ons like denoising ($0.005/min) and flat $5/month call recording; Dial folds recording and transcripts into the platform. Neither charges for inbound SMS.
Both platforms ship hosted MCP servers, and the Smithery registry independently health-checks them. As of July 5, 2026, Smithery reports 99.9% 30-day uptime and a 98/100 quality score for Dial's MCP server, versus 38.0% uptime and a 71/100 score for AgentPhone's.
To be precise about what that measures: it's the registry's own availability probes of each hosted endpoint over the trailing 30 days — not tool-call success rates — and both platforms are young, so check smithery.ai for current numbers before deciding. Directionally it matters, though: if your agent's phone rides on an MCP connection, endpoint availability is the floor its reliability is built on.
Both give AI agents real phone numbers with near-identical pay-as-you-go rates ($3/mo numbers, $0.13–0.22/min voice, $0.02 SMS). Dial's edge is reach and shipped channels: WhatsApp today in 180+ countries, international numbers, SMS to 200+ countries, and a $20/mo flat-rate plan. AgentPhone's edge is iMessage conversational extras like group chats and reactions.
At headline pay-as-you-go rates, essentially yes. The envelopes differ: Dial offers a $20/month flat-rate per number that includes all US calls and US SMS (and $192/year annually), which caps costs for busy agents. AgentPhone is metered-only, with per-second voice billing and paid add-ons like call recording at $5/month.
Not yet in its developer documentation — WhatsApp and RCS are advertised as coming soon, while the shipped channels are voice, SMS/MMS, and iMessage. Dial includes WhatsApp on the same number today, reaching 180+ countries.
They're shaped differently. AgentPhone documents group chats, reactions, tapbacks, and send effects, with cold outreach capped at 50 new contacts per day per line. Dial offers dedicated iMessage numbers ($250/month, messages free) designed for inbound and cold outbound at volume, with automatic RCS/SMS fallback for Android recipients.
Yes on both — this is the agent-native generation of telecom. Both expose MCP servers and agent-readable setup guides. Dial's flow (skills.md + CLI + remote MCP with OAuth) takes an agent from nothing to a provisioned number in about 10 seconds with no human in the loop.
As of July 5, 2026, the Smithery MCP registry — which independently health-checks hosted MCP servers — reports 99.9% 30-day uptime and a 98/100 quality score for Dial's server, versus 38.0% uptime and a 71/100 score for AgentPhone's. That metric measures endpoint availability as probed by the registry, not tool-call success; check smithery.ai for current figures.
Voice, SMS, WhatsApp, and iMessage through one API. $5 free credit, no credit card required.