Compare · Roundup
Patient communication platforms compared: Weave, Klara, Spruce, Luma, Artera and Caesar
A patient communication platform puts a practice's texts, calls and patient messages in one place, usually with reminders and digital forms on top. Weave, Klara, Spruce, Luma Health and Artera are the names practices compare most. They differ on three things: whether they run your phones, whether an AI answers, and which EMR they connect to.
This page lists six products in alphabetical order, including Caesar Health. We make Caesar, so check our row on a demo like every other. Every fact about a vendor comes from that vendor's own website, read on 2 November 2026.
The short version
- Spruce and Weave sell a phone system. Both publish prices. Weave adds payments and reviews. Spruce adds fax, video and secure messaging, with a BAA in every plan.
- Klara is part of ModMed. ModMed calls it "ModMed® Patient Engagement, powered by Klara®". It turns calls into text threads and uses AI to sort messages.
- Luma and Artera sell AI agents. Both name many EHRs. Neither publishes a price.
- Caesar sells agents that finish the task in your EMR. Calls, texts, intake and fax. It answers forwarded calls, so your phone number stays where it is.
Side by side
| Product | Texting | Phones | AI on calls |
|---|---|---|---|
| Artera (Harmony) | "RCS / SMS". "Two-Way Texting: Agent and human enabled" | "Activate the trusted phone number you already use". "We handle the phone company, so you don't have to" | "Answers your inbound calls & automates outreach", with "Live Transfer" |
| Caesar Health | Two-way texting for reminders and follow-ups; patients confirm or reschedule in the conversation. SMS Agent | Keep your number and handsets. Forward calls through your current provider. No port | Phone Agent answers, books, reschedules or cancels in the EMR on supported systems, and transfers to staff. Phone Agent |
| Klara (ModMed Patient Engagement) | "App-free two-way texting and broadcast messaging" | "Call-to-text: Convert calls and transcribed voicemails into encrypted text chats" | No published claim of an AI voice agent. AI works on messages: the Front Office Assistant "combs through incoming messages, flags the ones that need a human touch" |
| Luma Health | "Scheduling from web, SMS/RCS, Google, or AI conversation" | No published phone-system claim | Navigator, powered by Spark, handles "voice conversations, intelligently switching to SMS, switching languages, handing over to staff" |
| Spruce Health | "2-way SMS texting and voicemail transcription" | "Professional phone lines for individuals and teams". Phone trees, e-fax and optional VoIP desk phones | AI transcription and summarization "for voicemails, call recordings, and audio messages". No published claim of an AI that answers calls |
| Weave | "Two-Way Text Messaging", bulk texting and "Missed Call Texting" | "VOIP Phones", phone tree and call queue. Ultimate includes "up to 15 phones" | AI Receptionist answers calls and texts. Automatic booking "For qualified Dental PMS only"; other practices get captured requests for staff to schedule |
| Product | Forms and intake | EMR integration (vendor's words) | Published price |
|---|---|---|---|
| Artera | "Appointment and referral scheduling, intake, payments, billing, care gaps, and follow-ups" | "API, FHIR, and HL7v2 integrations". Partners listed include Epic, Oracle, MEDITECH, athenahealth, eClinicalWorks, NextGen, ModMed and AdvancedMD. "Integration capabilities vary by EHR system and version" | Not published |
| Caesar Health | Intake and booking in one flow; validated details written to the connected EMR. Intake Form Agent | athenahealth by API; ModMed and EZDERM integrations live; a browser agent for EMRs without a scheduling API. Functions vary by system. Integrations | Quoted. See pricing |
| Klara | "Collect intake forms and insurance information before the patient arrives" | Part of ModMed's platform: "Patient data flows straight into your EHR". No published claim on other EHRs on the pages read | Not published |
| Luma Health | "Intake forms & checklists" product; Spark parses "faxes, intake forms, etc." | "Bi-directional integration with leading EHRs, including Oracle Health, Epic, eClinicalWorks, MEDITECH, athenahealth, NextGen, and Greenway Health" | Not published |
| Spruce Health | "Clinical Questionnaires" to "screen patients in advance" | "Spruce now integrates with athenahealth" and "Spruce now integrates with DrChrono" (patients added as contacts). Public API | Basic $24 per user per month; Communicator $49 per user per month. 14-day trial, month-to-month |
| Weave | "Digital Forms" | "Integrated with leading medical PMS software", with "Automatic appointment writebacks to your PMS". Announced an EMA by ModMed integration on 19 October 2023 | Plans "starting from $199 per month". AI Receptionist price not listed |
Prices as published on each vendor's own site on 2 November 2026. Spruce adds taxes, telecom fees and a one-time $19.50 SMS registration fee. "No published claim" means we didn't find it on the vendor's pages, not that the product lacks it. Ask the vendor.
Weave vs Spruce
Both run your phones and your texts. Both publish a price.
Spruce prices per user. $24 or $49 a month per user, as published on 2 November 2026, with a BAA included in every plan and trial. It adds e-fax, video visits and secure messaging. It names athenahealth and DrChrono integrations that sync contacts.
Weave prices per plan. From $199 a month, as published on 2 November 2026, with higher plans by quote. It adds payments, reviews and an AI Receptionist. It names medical PMS writebacks and an EMA by ModMed integration.
Weave's automatic booking is labelled "For qualified Dental PMS only". Spruce's AI transcribes and summarizes. Spruce has no published claim of an AI that answers calls.
How to choose
Start with who owns the phones. If you want a new phone system with texting attached, Spruce and Weave sell that. If your phones work and you want help with the calls, look at the agents.
Then ask what happens after the message. Ask who completes the booking, the filing or the callback: your staff, the patient or the software. Decide which work you want gone.
Check your EMR. Klara lives inside ModMed. Spruce names athenahealth and DrChrono. Luma and Artera name many EHRs. Ask each to show the exact read and write in your system.
Choose Weave if you want phones, texting, payments and reviews on one invoice, with up to 15 phones on the Ultimate plan.
Choose Spruce if you want a per-user price, a BAA in every plan, and phone, text, fax and video in one app for a small team.
Choose Klara if you run ModMed and want patient messaging inside your EHR vendor's own platform.
Choose Luma if you want action on open orders and referrals from faxes and your EHR, plus scheduling through AI conversations, from one vendor that names seven major EHRs.
Choose Artera if you want AI agents across calls, texts and notifications, connected through API, FHIR or HL7v2.
Choose Caesar Health if you want the agent that answers the call or text to book, reschedule or cancel in your EMR, and you want intake and fax handled in the same place. Your EMR stays. Your number stays.
You can run two of these. You can keep your phone system and add an agent. If you do, decide which product owns each reminder so patients don't get two.
What to ask on any demo
- Show me a reschedule by text land in my EMR. Live, in my system.
- Who answers a call at 7pm? An AI, a voicemail, or a call-to-text message?
- Which features need a specific EMR or specialty? Ask what's labelled dental-only or early access.
- What does it cost all in? Per user or per plan, setup, SMS registration, hardware, add-ons.
- Do I keep my number? Forwarding or a port? What happens to it if I leave? Read your current vendor's porting terms before you cancel.
- Will you sign our BAA? Before the first patient message.
Frequently asked questions
What is the best Weave alternative for a medical practice?
It depends on what you use Weave for. For phones and texting with a published price, Spruce. For patient messaging inside ModMed, Klara. For AI agents across many EHRs, Luma or Artera. For an agent that books in your EMR and leaves your phone number where it is, Caesar Health. See also the Weave alternative for medical practices.
What is a good Klara alternative?
Klara is ModMed Patient Engagement, powered by Klara. If you run ModMed and want to keep messaging in ModMed's platform, Klara fits. If you want texting plus a phone system, Spruce and Weave. If you want an agent that answers calls and writes the result into ModMed, Caesar has a live ModMed integration. See Klara, Weave and Caesar for ModMed practices.
What is a good Spruce Health alternative?
Weave if you want payments and reviews alongside phones and texting. Luma or Artera if you want AI agents with named EHR integrations. Caesar if you want the call or text to end in a booking in your EMR.
Who owns Klara?
ModMed. ModMed's own page calls the product "ModMed® Patient Engagement, powered by Klara®". On 2 November 2026, klara.com redirected to ModMed's patient engagement page.
Weave vs Spruce: which costs less?
It depends on headcount. As published on 2 November 2026, Spruce is $24 or $49 per user per month and Weave plans start from $199 a month. Spruce's price grows with each user; Weave's is per plan. Price both for your team.
Do Weave and Spruce have an AI receptionist?
Weave sells an AI Receptionist. Its automatic booking is labelled "For qualified Dental PMS only". Spruce publishes AI transcription and summarization of voicemails and call recordings. No published claim of an AI that answers calls.
Can I switch platforms and keep my phone number?
Usually, by porting it. Spruce says you can "transfer (port) your existing business phone or fax number". Caesar doesn't need a port at all: you forward calls from your current line. Check your current vendor's terms before you cancel.
Is Caesar Health a patient communication platform?
It covers the same channels: calls, texts and intake forms. The difference is the agent finishes the request in your EMR. Caesar isn't an EMR and doesn't replace yours.
Sources (accessed 2 November 2026)
- Artera: Home, AI Agent Platform, Integrations. artera.io/pricing returned 404.
- Klara / ModMed: Patient communication, Patient engagement. klara.com redirected to the patient engagement page.
- Luma Health: Home, Introducing Spark. lumahealth.io/pricing returned 404.
- Spruce Health: Home, Plans, Spruce API, What's new.
- Weave: Pricing, AI Receptionist, Medical, EMA by ModMed integration.
- Caesar Health: Phone Agent, SMS Agent, Intake Form Agent, Integrations, Pricing.
See your texts, calls and chart in one place
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