Dux-Soup vs Proton.ai

Reviewed by MarTechRadar Research Desk. Pricing & entity snapshots verified Oct 14, 2026.

Dux-Soup (Web SaaS) and Proton.ai (Web SaaS) both compete in Autonomous B2B Sales Agents & AI BDRs. On pricing, Dux-Soup lists From $41.25/mo (no free plan disclosed), whereas Proton.ai lists Custom / enterprise pricing (no free plan disclosed). Technically, Dux-Soup is rated L3 · Conditional automation with a 2.3/5.0 (Workflow-embedded) moat, while Proton.ai is rated L3 · Conditional automation with a 4.0/5.0 (Proprietary moat) moat. Corporate profile: Dux-Soup (founded 2015, HQ Mountain View, California, United States) vs. Proton.ai (founded 2018, HQ Cambridge, Massachusetts, $20M funding). Verified by the MarTechRadar Research Desk (Oct 14, 2026 for Dux-Soup; Oct 12, 2026 for Proton.ai). At a 5-seat team baseline, Dux-Soup starts at ~$206/mo vs Proton.ai at Custom quote.

Dux-Soup

Client-side and cloud-managed LinkedIn automation engine providing scheduled connection requests, multi-stage drip messaging sequences, and AI-assisted.

5-Seat Floor: ~$206/mo (From $41.25/mo) · Autonomy: L3 · Conditional automation · Moat: 2.3/5.0 (Workflow-embedded)

Target fit: Creators / Solo (Web SaaS)

Read the Dux-Soup review →

Proton.ai

AI-powered sales platform built for distributors that ingests ERP and catalog data to automate reorder tracking, whitespace cross-selling, and quote creation.

5-User Team Cost: Custom quote (Custom / enterprise pricing) · Autonomy: L3 · Conditional automation · Moat: 4.0/5.0 (Proprietary moat)

Target fit: B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) (Web SaaS)

Read the Proton.ai review →

How Dux-Soup and Proton.ai differ

Pricing model: Dux-Soup is subscription, Proton.ai is enterprise / quote.
Dux-Soup publishes an entry price (From $41.25/mo); Proton.ai does not (Custom / enterprise pricing).
Moat tier: Proton.ai is rated Proprietary moat, Dux-Soup Workflow-embedded.
Dux-Soup was founded earlier (2015) than Proton.ai (2018).
Headquarters: Dux-Soup in Mountain View, California, United States, Proton.ai in Cambridge, Massachusetts.
Company headcount: Dux-Soup is 1-10 employees; Proton.ai is 51-200 employees.
Audience: Dux-Soup targets Creators / Solo; Proton.ai targets B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps).
Ecosystem stack: Dux-Soup connects with Salesforce, HubSpot, Pipedrive, Slack; Proton.ai connects with Outreach.

Computed from the fields below. Only editor-verified ratings and vendor-sourced prices are compared.

When to choose Dux-Soup vs Proton.ai (and when to walk away)

Choose Dux-Soup if

Target ICP & Stack Fit: You operate as Creators / Solo requiring a Web SaaS deployment for AI SDR, with verified ecosystem connectivity for Salesforce, HubSpot, Pipedrive, Slack.
L3 Architecture & Defensibility: Sustained installed base longevity since 2015 and entrenched workflow familiarity across SMB prospecting ecosystems, constrained by client-side browser DOM execution and platform policy changes.
Commercial Model Fit: Your procurement budget aligns with From $41.25/mo.

Walk away from Dux-Soup if

Walk away if your workflow requires uncapped enterprise volume on the From $41.25/mo entry plan without upgrading tiers.
Walk away if your workflow cannot tolerate browser runtime dependency: Local execution modes require persistent local machine uptime and uninterrupted browser instances to complete scheduled sequence queues.
Walk away if platform throttling and session invalidation is a deal-breaker for your team: Heavy reliance on LinkedIn session cookies exposes users to account rate-limiting, CAPTCHA hurdles, or temporary security checkpoints when action thresholds trip.

Choose Proton.ai if

Target ICP & Stack Fit: You operate as B2B Sales Leaders, SDR/BDR Teams and Revenue Operations (RevOps) requiring a Web SaaS deployment for AI SDR, with verified ecosystem connectivity for Outreach.
L3 Architecture & Defensibility: Proprietary wholesale transaction models mapped against high-SKU distribution catalogs, deep two-way ERP integrations, and historical distributor buying patterns.
Commercial Model Fit: Your procurement budget aligns with Custom / enterprise pricing.

Walk away from Proton.ai if

Walk away if you require transparent self-serve monthly billing or your budget ceiling is under $1,000/mo (Proton.ai requires sales-gated custom quoting).
Walk away if your workflow cannot tolerate ERP integration fragility: Data synchronization depends heavily on customized distributor database schemas, requiring frequent pipeline remediation when legacy ERP line-item mappings change.
Walk away if catalog cleansing overhead is a deal-breaker for your team: Whitespace prediction accuracy drops when product catalogs contain duplicate SKUs, missing descriptions, or unstandardized unit-of-measure attributes.

Side-by-side facts

Field	Dux-Soup	Proton.ai
Subtrack	Autonomous B2B Sales Agents & AI BDRs	Autonomous B2B Sales Agents & AI BDRs
Pricing	From $41.25/mo	Custom / enterprise pricing
Pricing model	Subscription	Enterprise / quote
Published pricing tiers	—	Enterprise / Custom (Custom quote)
Free access	No free plan disclosed	No free plan disclosed
Enterprise plan	Not recorded	Yes
AI autonomy level	L3 · Conditional automation	L3 · Conditional automation
Moat tier & score	2.3 / 5.0 · Workflow-embedded	4.0 / 5.0 · Proprietary moat
Delivery	Web SaaS	Web SaaS
Audience	Creators / Solo	B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps)
Ecosystem integrations	Salesforce, HubSpot, Pipedrive, Slack, LinkedIn	Outreach
Compliance & governance	—	SOC 2
Funding & backing	Undisclosed	$20M · Backed by Battery Ventures, Abstract
Founders	Will van der Sanden	Benjamin Cohen
Company size	1-10 employees	51-200 employees
Founded	2015	2018
Headquarters	Mountain View, California, United States	Cambridge, Massachusetts
Fact-checked	MarTechRadar Research Desk, Oct 14, 2026	MarTechRadar Research Desk, Oct 12, 2026
Governance & docs	—	Trust & Security ↗ · System Status ↗ · Terms ↗ · Privacy ↗

AI Head-to-Head Procurement Simulator · Evidence-Locked Dossier

Dux-Soup vs Proton.ai: TCO & constraint stress test

Test how both tools behave under your team size, monthly budget ceiling, CRM ecosystem, and governance guardrails.

1. Team / Seat Scale

2. Monthly Budget Ceiling

3. Primary Stack

4. Guardrail

Under a 5-seat / $800/mo profile, Dux-Soup carries lower procurement friction (Low Procurement Risk · Strong Fit) than Proton.ai (High Deal-Risk · Constraint Mismatch). Dux-Soup publishes a self-serve floor (From $41.25/mo), whereas Proton.ai requires a custom quote (Custom / enterprise pricing).

Dux-Soup

Low Procurement Risk · Strong Fit

Estimated Floor (5 Seats · Entry Per-Seat Tier)$206 / mo ($2,475 / yr floor)Exact seat math: 5 seats × $41.25/seat/mo on Entry Per-Seat Tier (From $41.25/mo).Fits within $800/mo cap (26% of ceiling at base floor)

Published Self-Serve Entry Floor: Dux-Soup publishes a transparent entry point (From $41.25/mo) for initial validation before committing.
Linear Per-Seat Scaling (5 Seats × $41.25/seat/mo): Base license scales linearly with operator headcount ($206/mo for 5 seats on Entry Per-Seat Tier).
Primary Operational Bottleneck: Browser Runtime Dependency: Local execution modes require persistent local machine uptime and uninterrupted browser instances to complete scheduled sequence queues.

Walk-Away Rule: Walk away if your workflow requires uncapped enterprise volume on the From $41.25/mo entry plan without upgrading tiers.

Negotiation Lever: Validate exact quota thresholds (seats, credits, or API calls) included in Dux-Soup's From $41.25/mo tier before converting from monthly to annual billing.

Dux-Soup Pricing ↗Full Dux-Soup Review →

Proton.ai

High Deal-Risk · Constraint Mismatch

Estimated Floor (5 Seats · Enterprise / Custom)Custom Quote (Custom / enterprise pricing)Vendor does not publish a self-serve USD floor on its pricing page; requires sales qualification.Sales-gated pricing vs. $800/mo cap (High quote risk)

Opaque Enterprise Quoting vs. SMB/Mid-Market Budget: Proton.ai does not disclose a public self-serve floor (Custom / enterprise pricing). Buyers with a $800/mo cap face high sales-qualification friction.
Sales-Gated Contract Terms: Commercial pricing is available on request through tailored enterprise sales quotes based on organizational scale, active ERP integrations, and assigned sales seats.
Primary Operational Bottleneck: ERP Integration Fragility: Data synchronization depends heavily on customized distributor database schemas, requiring frequent pipeline remediation when legacy ERP line-item mappings change.

Walk-Away Rule: Walk away if you require transparent self-serve monthly billing or your budget ceiling is under $1,000/mo (Proton.ai requires sales-gated custom quoting).

Negotiation Lever: Demand a 30- to 60-day paid pilot opt-out clause in the Proton.ai order form before signing a 12-month enterprise commitment.

Proton.ai Pricing ↗Full Proton.ai Review →

Interactive Head-to-Head Scenario Red-Teamer · Fact-Gate Verified

Limitations

Dux-Soup

Operational considerations and platform boundaries include: Browser Runtime Dependency: Local execution modes require persistent local machine uptime and uninterrupted browser instances to complete scheduled sequence queues.

Full limitations in the Dux-Soup review

Proton.ai

Operational considerations and platform boundaries include: ERP Integration Fragility: Data synchronization depends heavily on customized distributor database schemas, requiring frequent pipeline remediation when legacy ERP line-item mappings change.

Full limitations in the Proton.ai review

Official vendor architectural differentiators & migration proof

To help buyers evaluate real-world switching costs, verified founders, solutions architects, and PMMs at both Dux-Soup and Proton.ai can submit up to 3 evidence-backed architectural differentiators or verified customer migration case studies.

Why teams choose Dux-Soup over Proton.ai

Work at Dux-Soup? Verify your official domain email to publish 3 technical differentiators, migration benchmarks, or a head-to-head buyer sandbox offer on this comparison page:

+ Submit Dux-Soup Official Differentiators & Case Study →

Why teams choose Proton.ai over Dux-Soup

Work at Proton.ai? Verify your official domain email to publish 3 technical differentiators, migration benchmarks, or a head-to-head buyer sandbox offer on this comparison page:

+ Submit Proton.ai Official Differentiators & Case Study →

Pricing notes & tier schedules

Dux-Soup: From $41.25/mo

The commercial model operates on a per-seat subscription structure delineated by execution topology.

Hidden TCO drivers to audit:

Per-Seat Linear Scaling: Dux-Soup prices licenses on a per-user/seat basis (From $41.25/mo); expanding from 2 to 15+ operators multiplies base recurring spend linearly.
Annual Billing Headline vs. Monthly Premium: Headline entry rates reflect annual billing commitments (SAVE 25%); month-to-month flexibility carries a higher effective monthly rate or requires annual prepayment.

Pricing details in the Dux-Soup review

Dux-Soup pricing page

Proton.ai: Custom / enterprise pricing

Commercial pricing is available on request through tailored enterprise sales quotes based on organizational scale, active ERP integrations, and assigned sales seats.

Verified tier schedule:

Enterprise / Custom (Custom quote, 15–50+ seats (Enterprise SLA)): Sales-negotiated annual contract for custom volume, SSO/RBAC governance, and dedicated SLA.

Hidden TCO drivers to audit:

ERP Integration Fragility: Data synchronization depends heavily on customized distributor database schemas, requiring frequent pipeline remediation when legacy ERP line-item mappings change.
Catalog Cleansing Overhead: Whitespace prediction accuracy drops when product catalogs contain duplicate SKUs, missing descriptions, or unstandardized unit-of-measure attributes.

Pricing details in the Proton.ai review

Frequently asked questions: Dux-Soup vs Proton.ai

How does Dux-Soup pricing compare to Proton.ai in 2026?

Dux-Soup is listed at From $41.25/mo (subscription, no free plan disclosed), whereas Proton.ai is listed at Custom / enterprise pricing (enterprise / quote, no free plan disclosed).

How do Dux-Soup and Proton.ai compare on AI autonomy and moat depth?

On the MarTechRadar L1–L5 scale, Dux-Soup is rated L3 · Conditional automation with a Workflow-embedded moat (2.3/5.0), while Proton.ai is rated L3 · Conditional automation with a Proprietary moat moat (4.0/5.0).

Which teams are Dux-Soup and Proton.ai built for?

Dux-Soup is a Web SaaS product in Autonomous B2B Sales Agents & AI BDRs designed for Creators / Solo. Proton.ai is a Web SaaS product in Autonomous B2B Sales Agents & AI BDRs designed for B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps).

What are the main limitations of Dux-Soup vs Proton.ai?

For Dux-Soup: Operational considerations and platform boundaries include: Browser Runtime Dependency: Local execution modes require persistent local machine uptime and uninterrupted browser instances to complete scheduled sequence queues. For Proton.ai: Operational considerations and platform boundaries include: ERP Integration Fragility: Data synchronization depends heavily on customized distributor database schemas, requiring frequent pipeline remediation when legacy ERP line-item mappings change.

What are the hidden TCO drivers and contract negotiation levers for Dux-Soup vs Proton.ai?

For Dux-Soup: Per-Seat Linear Scaling (Dux-Soup prices licenses on a per-user/seat basis (From $41.25/mo); expanding from 2 to 15+ operators multiplies base recurring spend linearly.) Negotiation lever: Validate exact quota thresholds (seats, credits, or API calls) included in Dux-Soup's From $41.25/mo tier before converting from monthly to annual billing. For Proton.ai: ERP Integration Fragility (Data synchronization depends heavily on customized distributor database schemas, requiring frequent pipeline remediation when legacy ERP line-item mappings change.) Negotiation lever: Demand a 30- to 60-day paid pilot opt-out clause in the Proton.ai order form before signing a 12-month enterprise commitment.

Excerpts are quoted verbatim from each fact-checked review. Last updated Oct 14, 2026.