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An agency doesn't sell software seats — it sells booked meetings, for several clients at once, without mixing their data or burning their domains. These 6 AI SDR tools are the ones from our hand-verified directory that can carry client outbound: priced so the math survives multiple accounts, and built to run campaigns in parallel.
One disclosure worth making: most "best AI SDR for agencies" lists are written by the tools themselves or by affiliates quoting unverified prices. Every price below was checked against the vendor's own pages in October 2026, and no vendor paid for a better description or a higher rank.
| Tool | Best for | Starting price | Why it fits agencies |
|---|---|---|---|
| AiSDR | Done-for-you style outbound | From $250/mo | Researches live intent signals and personalizes outreach — the closest thing to a managed SDR you can resell |
| Reply.io (Jason AI) | Multichannel client campaigns | From $500/mo billed annually | Jason finds leads, runs outreach and books meetings across channels for SMB and mid-market teams |
| Apollo.io | Data included, per-seat math | Free plan · paid from $49/user/mo | A 240M+ contact database built in — no separate data vendor to buy for each new client |
| Salesforge (Agent Frank) | Agencies with their own sending stack | Agent Frank $499/mo billed annually | An autonomous SDR add-on for prospecting, outreach and booking that plugs into your existing infrastructure |
| Amplemarket (Duo) | Human-in-the-loop delivery | From $600/mo on annual term | Duo AI agents execute multichannel outbound while your team keeps approval control — safer for client brands |
| Unify | Signal-based plays, small pods | Free plan · paid from $20/seat/mo | Signal-triggered outbound at a per-seat price a small agency pod can pilot cheaply |
AI SDR that researches live intent signals and runs personalized outreach.
From $250/mo. Best for: agencies that want to sell outcomes, not effort. AiSDR works from live intent signals and writes outreach per prospect — the managed end of this list, priced flat enough to wrap into a per-client retainer. Built for SMB and mid-market B2B, with HubSpot and Salesforce users in mind.
AI SDR agent that finds leads, runs outreach and books meetings.
From $500/mo billed annually. Best for: multichannel client campaigns. Jason covers the full loop — sourcing, sequencing, replies, booking — across channels, for SMB and mid-market teams. The annual billing is the line to watch: pilot it on one client before rolling it into every retainer.
GTM platform combining a 240M+ contact database with AI assistance.
Free plan · paid from $49/user/mo. Best for: agencies tired of buying data per client. The database is the product — prospecting for a new client starts at zero marginal data cost. The catch is the per-user meter: seats for every client-facing teammate add up, so give client work its own seats deliberately.
Autonomous AI SDR add-on for prospecting, outreach and booking.
Agent Frank $499/mo billed annually. Best for: agencies that already run their own sending infrastructure and want an autonomous layer on top of it, not another platform to move into. Built for lean B2B teams — the add-on model is exactly how an agency stack grows.
Sales platform whose Duo AI agents execute multichannel outbound.
From $600/mo on annual term. Best for: agencies whose clients insist on approving messaging. Duo executes multichannel outbound with humans in the loop — slower than full autopilot, safer for a client's brand voice, and priced for mid-market delivery.
Signal-based outbound platform powered by AI agents.
Free plan · paid from $20/seat/mo. Best for: small pods testing signal-based plays — plays triggered by intent signals rather than static lists. The lowest seat price here and a free plan make it the cheap experiment before you standardize on a bigger platform.
On this list, flat-ish entry points run from $250/mo (AiSDR) to $600/mo (Amplemarket), while per-seat tools (Apollo from $49/user/mo, Unify from $20/seat/mo) depend on how many seats each client engagement needs. The retainer math that matters: tool cost per client per month versus the meetings that client sees — model it per client, not in aggregate, because one heavy client can quietly eat the margin of three light ones. Prices were checked against vendor sites in October 2026.
Only if the tool keeps clients in separated workspaces — separate lists, sending domains, inboxes and reporting. That separation is a plan-tier question on most platforms, so verify it on the exact plan you'd buy, and never run two clients off one sending domain: one client's spam complaints become the other client's deliverability problem.
Both models work; the tool choice differs. If you sell a black-box "meetings service", prioritize flat pricing and exportable per-client reporting your own brand can wrap. If clients buy a transparent stack, per-seat tools with client-visible dashboards are easier to hand over at churn. Either way, confirm white-label and data-export terms before the first client depends on them.
How we ranked: every company is verified against its official website, prices were checked by hand in October 2026, and paid placement never buys a better description or a higher rank. Some outbound links may be affiliate links — they don't affect our rankings. See how this directory works.