The honest split is channel, not pre-sale versus post-sale. Lemni is an AI agent platform that handles conversations over phone, email, SMS, and WhatsApp. It covers both support and proactive outreach, picks up calls, replies to tickets, issues refunds, and books through Calendly. What it does not do is LinkedIn. Reachium is the opposite. It is purpose-built for LinkedIn pipeline. It sends connection requests, runs multi-step follow-up, distributes lead magnets, and books meetings natively. If you need agents on the phones and inboxes, Lemni. If you need new conversations starting on LinkedIn, Reachium. They never touch the same channel.
Lemni has no LinkedIn channel. Not as automation, not as a sequence step, not anywhere in its docs or homepage. Its channels are phone, email, SMS, WhatsApp, and webhooks into tools like Shopify, HubSpot, and Gmail. So there is nothing to compare on connection method, because Lemni never connects to LinkedIn. Reachium is built for it and runs on the verified LinkedIn API instead of browser automation or rented proxies. That means your account sends connection requests and follow-ups through the sanctioned interface, not a scraper bolted onto your browser session. Different risk profile entirely, and only one of these two tools carries it.
Reachium is one platform for the full LinkedIn motion. Eight campaign types from lead lists to engagement to lead magnets. An AI content engine that writes posts on a 4-bucket strategy and hosts the lead magnet. Trigger-keyword detection that auto-DMs people who comment. A unified inbox across every LinkedIn account with meeting detection. A network CRM with tags, notes, and lead scoring. Lemni bundles a different stack: knowledge training, a shared human-plus-AI inbox, approval rules, multi-language voice, and plug-and-play actions for refunds and ticketing across phone, email, and messaging. Both are well-built. They just point at different channels.
Lemni charges a flat Workplace subscription, listed at $196 per month on its pricing page, plus a per-interaction fee billed roughly at model-compute cost. There is no per-seat charge. First-year promotional pricing roughly halves the subscription. That structure rewards high-volume phone and inbox automation where every interaction the AI clears saves a human reply. Reachium prices at $79 per LinkedIn account per month on annual billing, $99 month to month, with 25 AI credits per account. That structure rewards reps and founders running outbound on their own LinkedIn profiles. Neither is cheaper in the abstract. They bill for different units: agent interactions versus LinkedIn seats.