Best Open Source AI Sales Agents

The best open-source answer to an AI sales agent is a composable stack, not a digital employee in a box. Eigent can provide an Apache-2.0 agent layer for research, CRM operations, documents, and approvals. A real deployment still needs a CRM, lawful contact data, validation, email infrastructure, telephony, suppression controls, and human oversight. 11x, Artisan, Qualified Piper, Nooks, and Rox are useful commercial benchmarks—but they are proprietary, not open-source sales agents.

Quick picks by AI sales motion

The useful comparison is not “Which bot replaces an SDR?” It is “Which sales infrastructure should we buy, and which workflow logic should we own?”

What “open source AI sales agent” should mean

Use three tests:

1. Code: Is the functional product source available?
2. License: Can users run, modify, and redistribute it under a recognized open-source license?
3. Deployment: Can the buyer operate the relevant product without a vendor-only control plane?

Eigent's application repository is Apache-2.0 and supports a local/self-hosted path (Eigent repository, license). The five commercial vendors in this comparison do not publish an open-source license for their core products.

Open agent software does not make the sales supply chain open. Contact records, enrichment, email validation, mailboxes, carrier services, model APIs, and consent data remain separately licensed, metered, and regulated.

The AI-SDR reset: what the evidence supports

AI SDRs attracted large investments and ambitious replacement claims. 11x announced a $24 million Series A in September 2024, while TechCrunch reported from sources that its Series B was roughly $50 million at about a $350 million valuation (11x, TechCrunch). The Series B figures are reported estimates, not company-confirmed facts.

By 2025, public reporting showed the limits of a simple “replace the SDR team” story. TechCrunch reported allegations around 11x customer logos, early break-clause churn, product quality, and contracted-ARR accounting; 11x disputed material parts and said retention was then 79% (TechCrunch investigation). Artisan's CEO separately acknowledged that its first AI-SDR generation had low response, high churn, and severe launch-era hallucinations, while saying the product later improved (TechCrunch).

There is no audited category-wide 70–80% churn benchmark in the reviewed evidence. The responsible lesson is narrower: autonomous outbound needs a well-defined ICP, accurate data, approval gates, deliverability operations, and outcome measurement beyond messages sent.

The category then segmented. Qualified focused on inbound and was acquired by Salesforce in April 2026 (Salesforce). Nooks kept human callers in the loop (Nooks pricing). Rox built an agentic revenue-operations layer (Rox). Artisan's Ava 2.0 added approval gates and human handoff (Artisan).

Six-platform comparison

The table compares routes to the same business outcome, not six interchangeable products.

1. Eigent: best open-source foundation

Eigent is an open-source multi-agent workspace with browser, terminal, document, multimodal, MCP, skill, and model-choice capabilities (Eigent site, repository). In sales, it can research named accounts, prepare briefs, manipulate permissioned lists, draft outreach, update systems through scoped tools, and route actions for approval.

Its advantage is control. Teams can inspect the application, choose a compatible model, run locally, and adapt workflows across CRM, documents, research, and internal operations.

Its gaps are decisive: Eigent does not include a proprietary contact database, managed cold-email deliverability network, sales dialer, or carrier infrastructure. It also does not make cloud CRMs, enrichment APIs, email, or hosted models local. Operators must build permissions, observability, test data, recovery, and compliance controls.

Best for: RevOps or engineering teams that want to own the orchestration layer and can bring specialist sales infrastructure.

2. 11x Alice: best packaged autonomous outbound

Alice identifies target accounts, researches and personalizes outreach, handles responses, and schedules meetings. Paid plans add managed Gmail setup, warm-up, rotation, monitoring, and CRM synchronization (11x product, 11x pricing).

Growth starts at $3,750 per month billed annually for up to 2,000 prospects per month and five users. The same page's FAQ says pricing starts at $36,000 per year, which conflicts with $45,000 annualized; buyers should request a written quote (11x pricing).

11x is more complete than Eigent for managed outbound infrastructure. Eigent is more adaptable and inspectable. A proof of value should measure valid meetings, human correction, unsubscribes, deliverability, and pipeline—not only prospects contacted.

Best for: teams that want an outbound appliance and accept a proprietary annual commitment after a controlled pilot.

3. Artisan Ava: best bundled data and outbound workflow

Ava 2.0 can define targets, research contacts, generate messages, manage sequences and replies, book meetings, and hand warm contacts to humans. The current positioning includes approval gates (Artisan Ava 2.0).

Artisan's pricing is custom. Its plans claim a 250M+ contact database, Salesforce and HubSpot integration, and sending infrastructure; the AI dialer is a separate add-on (Artisan pricing). The company announced a $25 million Series A in 2025 and later said it had raised $36 million in total (Artisan, Ava 2.0).

Artisan is faster to operationalize when a team wants data and sending in one package. Eigent offers more source and workflow control but requires separate data, validation, mailboxes, deliverability, and dialing.

Best for: outbound teams that prefer a managed BDR bundle over assembling providers.

4. Qualified Piper: best inbound Salesforce agent

Piper handles website conversations through video, voice, or text, produces AI-generated emails, qualifies visitors, schedules meetings, and uses enrichment and connected Salesforce/GTM data (Qualified pricing). Salesforce completed its acquisition of Qualified on April 1, 2026 (Salesforce).

Premier, Enterprise, and Ultimate pricing is custom. The current page says Piper has been hired by more than 500 companies; that is a first-party claim (Qualified pricing).

Piper and Eigent are adjacent. Piper is a packaged inbound website representative with deep Salesforce routing. Eigent is a general workspace for bespoke research and back-office actions. Building Piper's visitor identification, multimodal website UX, routing, and analytics would be a product project.

Best for: Salesforce-centered enterprises prioritizing inbound website conversion.

5. Nooks: best rep-led calling platform

Nooks combines an AI dialer, sequencing, signals, coaching, and a virtual sales floor. Its dialer includes parallel/power dialing, answer detection, spam protection, call logging, and team collaboration (Nooks pricing, Nooks dialer).

Pricing is custom. Nooks says most customers retain a primary data provider and that its data package does not replace Clay (Nooks pricing).

Eigent does not provide carrier infrastructure, parallel dialing, answer detection, call recording, coaching, or a virtual sales floor. A hybrid can use Eigent for research and account plans while Nooks handles calls. Calling and recording law varies by jurisdiction and requires specialist review.

Best for: human outbound teams whose central bottleneck is live calling rather than research automation.

6. Rox: best proprietary revenue-operations layer

Rox connects CRM, interaction, and public data, then uses agents for account monitoring, research, meeting preparation, prioritization, outreach, and CRM updates (Rox). It is the closest proprietary comparison to Eigent's cross-system orchestration story.

Starter is free with 2,000 agent actions per month, Core starts at $50 per month with 5,000 actions, and Enterprise is custom. Action cost varies by task, model, and data (Rox pricing). Independent review evidence is thin: Rox's G2 seller page had no reviews when checked (G2).

Rox offers a more packaged revenue schema and faster SaaS start. Eigent offers application source, self-hosting, and broader model/workflow choice.

Best for: teams wanting agentic account intelligence and CRM operations without building the control plane.

A realistic open-source AI sales agent stack

Sources: Twenty repository and license, Activepieces licensing, n8n license, and listmonk documentation.

If enrichment waterfalls and provider contracts are the main requirement, compare this stack with the more specialized open-source Clay alternative.

Proof-of-concept before purchase

Test the same five workflows across candidates:

1. Research 20 named accounts and cite every external fact.
2. Create a structured brief and draft outreach with human approval.
3. Deduplicate and enrich a permissioned CRM sample.
4. Update one reversible CRM field with an audit log.
5. Triage replies or meeting notes and prepare next actions.

Measure factual accuracy, accepted records, reviewer time, duplicate and bounce rate, recovery from bad data, cost per accepted output, policy compliance, and auditability. Do not optimize only for emails or calls sent.

Choose a managed suite when bundled data, deliverability, dialing, inbound UX, implementation, and support are the priority. Build on open source when source, deployment, model control, and custom multi-system workflows justify operator ownership. Use a hybrid when specialist communications infrastructure is valuable but orchestration should remain portable.

Production-readiness checklist

Before giving any sales agent live write or send access, confirm that the team can answer these questions:

• Which system is authoritative for account, contact, consent, and suppression status?
• Which provider supplied each field, and what use or retention rights apply?
• Can every CRM update be traced, deduplicated, retried safely, and reversed?
• Who approves messages, audience criteria, and automated follow-up?
• How are bounces, unsubscribes, complaints, do-not-call requests, and regional rules enforced?
• Which model, connector, email, and telephony vendors receive personal data?
• What budget caps stop a bad list or looping workflow?
• How quickly can the team disable automation and restore the prior CRM state?

Open source makes the agent logic inspectable. It does not replace this operating discipline or legal review.

Build the AI sales agent layer you can govern

Eigent can be the open agent layer for research, documents, CRM preparation, and approvals—while your team keeps lawful data and communications in purpose-built systems. Start with the open-source Cowork for sales, test a small permissioned account list, and keep every external action human-approved. Download Eigent to build the pilot.