# Yalc vs Amplemarket for the 2026 AI SDR Stack

> Canonical: https://www.yalc.ai/blog/yalc-vs-amplemarket/

An operator read on the all in one AI SDR suite against an open source skill folder, decided by who owns the integration layer.

Pick Amplemarket if you want one vendor to own the contact data, signals, sequencer, and AI copy under a single contract, and pick Yalc if you want each of those as a separate skill your team can read and rewrite. The one dimension that decides it is not features or price. It is whether your team has the cycles and the appetite to own the integration layer itself.

This piece walks both products on public facts, then runs the same call at five, fifteen, and fifty seats so the math is concrete. The wider operator playbook this sits inside is mapped in [the 2026 guide to B2B lead generation](/blog/b2b-lead-generation/), and the suite versus composable split shows up across the entire category.

## What is the real difference between Yalc and Amplemarket

Amplemarket is a closed suite the operator rents. Yalc is an open source skill folder the operator owns. That is the whole split, and every other tradeoff falls out of it.

Amplemarket bundles a contact database, buying signals, a multichannel sequencer, an AI copilot that drafts and acts on those signals, and a [hosted MCP server](https://www.amplemarket.com/blog/mcp) that connects to Claude or ChatGPT through one OAuth sign in with no API keys. Yalc takes the opposite shape. Sourcing is a skill that calls [Crustdata](/tools/crustdata/) directly. LinkedIn is a skill that calls [Unipile](/tools/unipile/). Qualification runs through a skill like [the leads qualification skill](/skills/qualify-leads/) that the team edits and versions like code. The orchestration is one Claude Code conversation on the operator's machine talking to real APIs through MCP servers, writing structured output to disk.

The non-obvious part is that the integration layer never disappears. Amplemarket charges you to make it invisible. Yalc hands it to you for free and makes you responsible for it. The decision rule is simple. If a new signal field shipping on a Tuesday is something you want to wire in that same Tuesday, you want the layer in your hands. If you never want to think about that field at all, you want it hidden. The longer argument for the agent first model sits in the breakdown of [AI sales agents](/blog/ai-sales-agents/).

## How much does Amplemarket cost compared to Yalc

Amplemarket publishes one price and quotes the rest. The Startup plan is $600 a month, billed annually only, and includes two users, 15,000 annual email credits per user, and 480 annual phone credits per user, per [Amplemarket's own pricing page](https://www.amplemarket.com/blog/amplemarket-pricing). The Growth plan includes four users and the Elite plan includes ten, both quoted to team size rather than listed. Phone credit top ups run $0.50 each. The floor is roughly $7,200 a year before Sales Navigator, extra seats, or credit overages.

Yalc charges nothing on the operator OS layer because the OS is open source. The bill sits one layer below in the providers the skills actually call. Crustdata meters its own usage. Unipile charges per connected LinkedIn account per month. Email infrastructure charges per inbox or per send. The OS adds zero markup on top of those provider fees.

The honest comparison is per body versus per call. Amplemarket's price scales with seats, so a two seat Startup plan is one budget and a ten seat Elite plan is a procurement event. Yalc's cost scales with volume, so it tracks how much data you pull and how many accounts you send from, not how many people log in. A small team running modest volume usually pays well under a multi seat suite license because nobody is paying for a sequencer seat per rep. The gap narrows at the fifty seat tier where Amplemarket can negotiate hard and where the hours saved on the integration layer start to count as real dollars again.

| Dimension | Amplemarket | Yalc |
| --- | --- | --- |
| Model | Closed suite, rented | Open source skills, owned |
| Published price | $600 a month, 2 users, annual | $0 on the OS layer |
| What scales the bill | Seats and credits | Provider API volume |
| Data layer | Native 200M plus database | Crustdata or your own lake |
| Channel layer | Bundled multichannel | Unipile and your sender, swappable |
| MCP auth | OAuth, no API keys | Your own provider keys |
| Best for | Sales led teams buying a service | Operator led teams building a craft |

## Do both Yalc and Amplemarket support MCP

Both ship MCP servers, and the difference in how they authenticate tells you which operator each one is for. Amplemarket's MCP connects through a single OAuth sign in with no API keys, exposing prospect discovery, contact and company enrichment, account research, activity history, and the ability to search accounts and enroll leads into sequences, all documented on [Amplemarket's MCP announcement](https://www.amplemarket.com/blog/mcp). It is the suite, reachable from a chat window.

Yalc's model inverts the auth. There is no single sign in to a vendor that holds your data, because the data lives with the providers you chose and the keys are yours. An MCP call hits Crustdata with your Crustdata key, or Unipile with your Unipile credential, and the skill that orchestrates the call is a markdown file you can open and change.

The judgment that matters here is about lock in, not convenience. OAuth with no keys is faster on day one and means your prospect search, enrichment, and sequence enrollment all resolve inside one vendor's graph. Bring your own keys is slower on day one and means no single vendor can deprecate your workflow, reprice your access, or sit between you and your own contact data. The architecture argument lives in full in the piece on the [agentic GTM operating system](/blog/agentic-gtm-operating-system/).

## Which one is better for deliverability

Deliverability is where the suite earns its keep and also where the composable stack has a quiet edge that incumbents skip over. Amplemarket bundles a deliverability suite into every plan, which is genuinely useful when you do not want to manage it yourself.

The angle the suite pitch omits is that since February 2024, Gmail and Yahoo enforce the same baseline on everyone who sends more than 5,000 messages a day. Per [Klaviyo's summary of the bulk sender rules](https://www.klaviyo.com/marketing-resources/2024-google-yahoo-sender-requirements), bulk senders must authenticate with SPF and DKIM, publish a DMARC policy of at least p=none, keep one click unsubscribe working, and hold their spam complaint rate under 0.3 percent, ideally below 0.1. None of that is proprietary to any platform. It is a public spec that applies to your sending domain whether you send through a suite or through your own inbox provider.

The operator consequence is that owning the sending layer lets you place each inbox on the warmup, domain, and volume profile you choose, instead of inheriting whatever pooled defaults a suite ships. When deliverability dips for one geography, you swap that sender without renegotiating a contract. The tradeoff is real. You also inherit the responsibility for staying under that 0.3 percent line yourself. For teams that want to understand the sending mechanics rather than rent them, the [outbound lead generation playbook](/blog/outbound-lead-generation/) covers the setup.

## When Amplemarket is the right call

Amplemarket wins for a clearly defined set of teams, and there is no need to soften it.

A sales leader who needs the motion running next quarter and has no GTM engineer on payroll gets day one productivity, because the data, sequencer, signals, and copy arrive already wired together. A team running a stable motion that does not change much quarter to quarter pays for consolidation with iteration speed and is fine with that trade. A company under enterprise procurement where every new vendor triggers a long security review finds that one vendor covering four jobs is cheaper to clear than four vendors covering one each. And a leader who simply wants one contract, one SLA, one onboarding, and one support number has a valid preference the suite delivers on. If that is the brief, Yalc is not the answer. The wider field of suite options is mapped in the operator survey of [AI SDR tools](/blog/ai-sdr-tools/).

## When Yalc is the right call

Yalc wins for the inverse profile, and the line is sharper than most operators admit.

A GTM engineer or operator team building the motion as a craft instead of consuming it as a service gets a step change from the markdown skill folder, because every iteration sharpens the next run and every rewrite is a one line commit rather than a vendor ticket. A team that wants every layer swappable can change a data vendor, a sender, or an AI model in an afternoon instead of a renewal cycle. A company under data privacy review where third party data residency is a recurring sticking point keeps the data with the providers it chose, because the OS itself holds none of it. And a bootstrapped founder or an operator agency, where the per seat suite math never closes, pays providers directly with no platform markup. The shared pattern across these profiles is technical comfort plus a need for control. When both boxes check, the call tips fast.

## Can you run Yalc and Amplemarket together

The most underrated move in this comparison is not choosing. Plenty of teams in 2026 keep Amplemarket as the rep facing surface and route Yalc skills around it for the work the suite does not do well.

The pattern is clean. Sequences and the unified inbox stay in Amplemarket because the reps already live there. Signal capture moves out to a Yalc skill that watches sources the suite cannot see, then pushes qualified triggers back in as new contacts or enriched fields. LinkedIn deep work the suite does not cover well runs through a Yalc skill calling Unipile, then logs back as an activity event. Qualification logic that needs to live in code sits in a markdown skill and writes its verdict into Amplemarket as a field reps can sort on.

The migration math between the two runs the same way. Moving from Amplemarket to Yalc is a workflow rewrite, not a data export. Contacts and the activity log come out cleanly, but the sequencer logic, signal rules, and copy templates have to be reimplemented as skills calling providers directly. For a small team that rewrite is about a week. For a fifty seat team it is a multi quarter project that pays back in suite license savings and velocity. Going the other direction is easier on paper and harder in practice, because your skills export as documentation the suite will not accept as logic, so you rebuild each one as suite configuration and accept the per seat math.

## Frequently asked questions

### How much does Amplemarket cost in 2026?

Amplemarket's Startup plan is $600 a month, billed annually only, and includes two users with 15,000 annual email credits and 480 annual phone credits per user. The Growth plan covers four users and the Elite plan covers ten, both quoted to team size rather than published. Phone credit top ups cost $0.50 each, and the effective floor is around $7,200 a year before extra seats or Sales Navigator.

### Is Yalc free?

Yalc's operator OS layer is open source and carries no seat fee. You pay the API providers your skills actually call, such as Crustdata for data, Unipile for LinkedIn, and your email sender, with no markup added by the OS. Your bill scales with usage volume rather than with the number of people on the team.

### Does Amplemarket have an MCP server?

Yes. Amplemarket ships a hosted MCP server that connects to Claude or ChatGPT through one OAuth sign in with no API keys, and it exposes prospect discovery, contact and company enrichment, account research, activity history, and lead enrollment into sequences. Yalc also works through MCP, but it calls each provider with your own keys instead of routing through a single vendor login.

### Which is better for cold email deliverability?

Both can hit the bar, because the bar is a public spec. Since February 2024, Gmail and Yahoo require any sender of more than 5,000 messages a day to use SPF, DKIM, and DMARC and to keep spam complaints under 0.3 percent. Amplemarket bundles a deliverability suite, while Yalc lets you own the sending layer and tune each inbox yourself, which also makes that 0.3 percent line your responsibility.

### Should a small startup choose Yalc or Amplemarket?

It depends on whether the startup has someone who enjoys owning the integration layer. A sales led founder who wants the motion live next quarter and no stack to maintain is better served by Amplemarket's bundled suite. An operator or technical founder who wants every layer swappable and no per seat license is better served by Yalc, especially during the early phase when the motion is still being figured out.