AgentLine expects you to host the agent: inbound calls arrive at a webhook you run, and numbers are US only. People who want a line that simply answers look for a finished product.
This page is written by CosVoice, which is one of the alternatives. The others are listed with the same facts and the same care, and where AgentLine itself is the right answer, the page says so.
A finished phone line for the assistant you already use. $29, $79 or $199 a month, with 100, 300 or 1,000 a month, then $0.25 a minute. Free to try: 7 days with 10 minutes. Card needed; $29 is charged on day 7 unless you cancel.
Best for: Someone who already has an assistant (a Grok Bot, a dot, Claude, ChatGPT, Muse) and wants it on the phone today, with every call written up.
Unlike AgentLine: ready without writing code.
A phone plan for an AI agent: one number, unlimited talk and text. $29.99 a month ($14.99 the first month). Minutes: Unlimited US and Canada, within fair use: 20 calls an hour, 50 a day, 1,000 minutes a day. Free to try: $2 of free credits instead of the plan.
Best for: An agent that needs a lot of minutes and two-way texting, one call at a time.
Unlike AgentLine: ready without writing code.
A phone API for developers building agents. $3 a number a month, plus usage. Minutes: None included: 13 cents a minute with your own agent, 22 cents with a hosted one. Free to try: $5 of credit on a new account.
Best for: A developer who wants low per-minute rates, iMessage, and full control of the agent's code.
A phone API and hosted MCP server for developers building agents. $19.99 a month plus usage; numbers from $2 a month each. Minutes: None included: $0.40 a minute for managed AI voice, $0.10 with your own model keys. Free to try: 72 hours with 5 AI minutes; card needed.
Best for: A developer who wants many numbers, one-time-code reading, and memory across calls through an API.
| AgentLine A telephony API and MCP server for agents you build | CosVoice A finished phone line for the assistant you already use | Bland's agent phone plan A phone plan for an AI agent: one number, unlimited talk and text | AgentPhone A phone API for developers building agents | AgentCall A phone API and hosted MCP server for developers building agents | |
|---|---|---|---|---|---|
| Price | $2 a number a month, US numbers only | $29, $79 or $199 a month | $29.99 a month ($14.99 the first month) | $3 a number a month, plus usage | $19.99 a month plus usage; numbers from $2 a month each |
| Minutes included | None included: $0.10 a minute, with a one-minute minimum per call | 100, 300 or 1,000 a month, then $0.25 a minute | Unlimited US and Canada, within fair use: 20 calls an hour, 50 a day, 1,000 minutes a day | None included: 13 cents a minute with your own agent, 22 cents with a hosted one | None included: $0.40 a minute for managed AI voice, $0.10 with your own model keys |
| Free to try | Not stated | 7 days with 10 minutes. Card needed; $29 is charged on day 7 unless you cancel | $2 of free credits instead of the plan | $5 of credit on a new account | 72 hours with 5 AI minutes; card needed |
| Ready without writing code | NoAn API and MCP server: you run the agent | YesAbout a minute | YesChoose your AI, connect, pick the plan | NoAn API-first platform: you write the agent | PartlyA hosted MCP server, made for people building agents |
| Works with the assistant you already use | PartlyClaude, OpenClaw, Hermes or any model, through its API or MCP | YesGrok Bot, OpenAI dots, Claude, ChatGPT, Cursor, Muse | YesClaude, ChatGPT, Muse, Grok Bot | PartlyThrough its API or MCP server, with setup | PartlyClaude Desktop, Cursor, Windsurf, or your own code |
| Calls people for you | Yes | YesRestaurants, vendors, appointments, callbacks | Yes | YesWith the agent you build or host | Yes |
| Answers calls | PartlyInbound calls and texts are delivered to a webhook you host | YesAs your assistant, from your instructions | Yes | YesWith the agent you build or host | Yes$0.40 a minute for managed AI voice |
| Written summary after every call | PartlyAutomatic transcripts | YesEmailed after every call, plus a morning brief | Not stated | Not stated | YesTranscripts and summaries on AI voice calls |
| Its own email address | Not stated | YesReceives and sends, in the same thread | Not stated | Not stated | Not stated |
| Texting | PartlyInbound texts, 2 cents each | PartlyTexts to the line are saved and treated as your instructions. Replies by text are not on yet | YesUnlimited US and Canada, capped at 20 an hour and 100 a day | Yes2 cents a segment; iMessage lines from $150 a month | YesSend and receive, with an inbox per agent |
| Takes the calls you miss on your mobile | Not stated | YesForwarding codes for your carrier, filled in | Not stated | Not stated | Not stated |
| Waits on hold, then rings you | Not stated | YesOn calls it places for you | Not stated | Not stated | Not stated |
| More than one call at a time | Not stated | YesThree placed and three answered | NoOne active call across the account | Not stated | Not stated |
| Answers as your business, from your hours and prices | PartlyIf you build it | YesBrief it once in plain words | Not stated | PartlyIf you build it | PartlyIf you build it |
Facts about other products come from their own pages, read on October 3, 2026: AgentLine · Bland · AgentPhone · AgentCall. "Not stated" means their page does not say, and we have not guessed. Prices change; if a row is out of date, tell us and we will fix it.
A number in your area code, a plan you pick, working from the first call.
Yes. 7 days with 10 minutes of calls on a real number. You add a card to start and nothing is charged that day. On day 7 your card is charged $29 for Starter, and $29 each month after that, unless you cancel first. If the 10 minutes run out early, calls pause until the plan begins. Cancel in Settings in a few seconds. One free trial per person, and it needs a permanent email address.
Starter is $29 a month with 100 minutes of calls. Plus is $79 with 300 minutes. Pro is $199 with 1,000. Extra minutes are $0.25 each, rounded up per call. Every plan includes the number, the email address, and the assistant connection.
An AI receptionist answers a business line and screens callers. CosVoice is your own assistant's phone. It takes instructions from you, makes calls for you, handles the callbacks, and reports back. One line per Bot, not a call center.
US and Canada numbers. A single call can run up to 10 minutes; the line wraps up politely before the limit. A line can be on three calls it placed and three calls it answered at the same time (one of each on the free trial), and it can place up to 60 calls an hour. If one more person calls while it is answering three, they hear a busy tone and can call back.
Free for 7 days with 10 minutes of calls. Then $29 a month unless you cancel.