Comparison, checked 19 October 2026
Sellinger vs Alta (2026): two AI SDRs, bought in different ways
The short answer
Alta is an AI SDR with agents for outreach, inbound replies and phone calls, sold through a demo and a quote with no public prices. Sellinger covers a similar job on five channels with prices on the pricing page, from $198 per LinkedIn agent a month, and a free start without a card. If you want an AI calling agent and a website chat agent from the same vendor and are happy to talk to sales, Alta fits; if you want to see the price and try it yourself, Sellinger does.
Alta is an AI sales platform with an SDR agent for outbound campaigns, an inbound agent and an AI calling agent, plus a built in contact database. Sellinger is a self serve AI agent for outreach, replies and meetings, with a CRM, a database and a partner portal included.
Prices and features checked on 19 October 2026. Updated 19 October 2026. Published by Sellinger AI and reviewed by Viktorio Shopov, co-founder of Sellinger. Report an error.
Alta and Sellinger side by side
Each Alta cell links to the page it was read from. There is no score and no total.
| What we compared | Alta | Sellinger |
|---|---|---|
| Price | No public prices. Pricing is by quote and depends on volume, team size and channels. A support FAQ lists seat bundles of Starter 3, Professional 10 and Enterprise 25+, with no prices, and may predate the pricing page. altahq.com/pricingchecked 19 October 2026 | Live Chat from $19, Email from $39, WhatsApp and Instagram from $29, LinkedIn $198 per agent a month, bundles $249 to $1,199 a month. Sellinger fact register checked 19 October 2026 |
| Free trial | No trial or free plan was found on the pages checked (not verified). The pricing page offers Book a demo and Talk to sales, and no self serve signup was seen. altahq.com/pricingchecked 19 October 2026Not verified | 30 days free on messaging modules and bundles, no card. Enrichment starts with a $10 credit. Sellinger fact register checked 19 October 2026 |
| Channels | LinkedIn and email, phone calls with an AI calling agent, and a web chat widget. SMS and WhatsApp are in Beta and run through Twilio. Instagram is not listed. altahq.comchecked 19 October 2026 | LinkedIn, email, WhatsApp, Instagram and live chat. WhatsApp runs through your connected account at a small daily volume. Sellinger fact register checked 19 October 2026 |
| AI and replies | Yes. A Reply Agent answers inbound replies on its own or labels the outcome for a person. Campaigns run in Auto-Pilot, or in Co-Pilot, where a person approves each prospect before the first message. support.altahq.com/en/articles/15198532-how-t…checked 19 October 2026 | The agent writes the first message and every follow up, answers replies and books the meeting. You can require approval before anything sends. Sellinger fact register checked 19 October 2026 |
| LinkedIn safety model | A Chrome extension connects each rep, with per account proxy routing, browser fingerprinting and a quota engine. It halts for a 14 day cooldown when LinkedIn signals limits. The support FAQ gives 30 LinkedIn touches per profile per day as the safe limit. support.altahq.com/en/articles/16088874-how-a…checked 19 October 2026 | Your own account connects through a hosted login and Sellinger stores no LinkedIn password. Default limits are 20 invitations a day and 150 a week, with a quiet window at night. No tool can guarantee against restrictions. Sellinger fact register checked 19 October 2026 |
| Built in CRM | No built in CRM is listed (not verified). Alta describes itself as a layer beside your CRM, with a People page, prospect statuses and a meetings page. altahq.com/faqchecked 19 October 2026Not verified | Contacts, deals and every conversation in one place, with a two way HubSpot sync. Sellinger fact register checked 19 October 2026 |
| Contact database | Yes. Audiences start from 275M+ contacts, then add CRM data, LinkedIn signals, web search or a CSV. The site also says it connects to 50+ data sources and signals. altahq.com/features/audiencechecked 19 October 2026 | A database of 700M+ contacts with verified emails and phone numbers, pay per lookup from $0.01. Sellinger fact register checked 19 October 2026 |
| Intent signals | Yes. It detects 17 signals across people and companies, among them funding rounds, hiring, role changes and LinkedIn engagement, and runs trigger based campaigns. support.altahq.com/en/articles/15173312-prosp…checked 19 October 2026 | 26 ready made signal templates in 8 categories on LinkedIn, included with every bundle. Sellinger fact register checked 19 October 2026 |
| Agencies and white label | A partner program pays up to 25% of referred customers' payments for up to 24 months. No white label or priced agency plan is listed. altahq.com/altas-partner-programchecked 19 October 2026 | A portal on your own domain with unlimited client workspaces: a one time $500 setup fee, then the standard agent prices. Sellinger fact register checked 19 October 2026 |
| API and MCP | Alta MCP lets Claude use Alta. A personal API token lets scripts call the API, and incoming webhooks can add prospects to a campaign. support.altahq.com/en/articles/15517839-conne…checked 19 October 2026 | REST API with webhooks from the Full Stack bundle up, and a hosted MCP connector with 43 tools for Claude and ChatGPT. Sellinger fact register checked 19 October 2026 |
Who should choose which
Choose Alta if
- you want an AI calling agent that makes and takes phone calls, and a chat widget for your website, from the same vendor as the outbound agent.
- you want written outreach in 26 listed languages, set per campaign.
- you want signal triggered campaigns, with 17 signals across people and companies.
- you are comfortable buying through a demo and a quote, and want help from a sales team.
Choose Sellinger if
- you want to read the price before talking to anyone, and to start on a free trial with no card.
- you want contacts and deals kept in the tool itself, with a two way HubSpot sync, not only a layer beside your CRM.
- you want WhatsApp and Instagram agents that you switch on yourself, where Alta lists WhatsApp in Beta.
- you resell to clients and want a portal under your own brand.
How you find out what it costs
Alta publishes no prices, so a cost table would be invented. Its pricing page asks for your team size and says the price scales with it. The trade off of a quote is that you cannot compare before you talk to a salesperson.
Sellinger's prices are on its pricing page: a LinkedIn agent is $198 a month, and five agents are $890 (5 agents at $178). Messaging modules and bundles start with 30 days free and no card.
How much the agent does alone
Both tools can send answers without a person. Alta's Reply Agent replies or labels the outcome, and Auto-Pilot sends every touchpoint, while Co-Pilot has a person approve each prospect first. The design is close to Sellinger's.
Sellinger's agent answers replies and proposes a time, and you can require approval before anything sends.
WhatsApp and the LinkedIn session
Alta runs WhatsApp and SMS as Beta channels through Twilio, and its support article says they appear only if enabled for your workspace. Sellinger sends first messages and follow ups through your connected WhatsApp account at a small daily volume that WhatsApp limits, and answers people who write first.
On LinkedIn, Alta describes proxies, fingerprints and a quota engine behind a Chrome extension, and its pages do not spell out the exact architecture. Sellinger connects through a hosted login and stores no password, with defaults of 20 invitations a day and 150 a week. No tool can guarantee that LinkedIn will not restrict an account.
Switching between Alta and Sellinger
Alta contracts are by quote, so ask your account manager for the term and the seat count before you plan a move.
- Check the contract end date and the seats you have bought with Alta.
- Connect a LinkedIn account in Sellinger that Alta does not use, and load a list of people you want to reach.
- Describe your offer and approve the first messages the agent drafts.
- Compare replies and meetings per account over a few weeks before you move a seat.
- Alta's LinkedIn cooldown of 14 days after a limit signal applies to its own seats, so keep the accounts separate.
- We have not checked what Alta exports, so keep your own copy of sequences and prospect lists.
Questions about Alta and Sellinger
How much does Alta cost?
Does Alta have a free trial?
Does Alta have an AI that makes phone calls?
Does Alta have a CRM?
Can an agency run clients on Alta?
Method and changelog
Each competitor row links to its source and shows the date it was read. A cell older than 45 days turns grey. The full method and the correction process are on the Compare page. How we compare.
Changelog
- 19 October 2026. Page added, written from the Alta register cells read on 19 October 2026.
Keep reading
- Sellinger pricing
- Case study: Wealth-advisor referral network
A referral network ran agents on 26 LinkedIn profiles and 4,392 of the 9,808 professionals it messaged answered.
- AI SDR pricing compared
- Sellinger alternatives
- All comparisons
- Sellinger facts
