Dux-Soup vs Fiber AI
Dux-Soup (Web SaaS) and Fiber 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 Fiber AI lists From $300/mo (no free plan disclosed). Technically, Dux-Soup is rated L3 · Conditional automation with a 3.6/5.0 (Proprietary moat) moat, while Fiber AI is rated L3 · Conditional automation with a 4.2/5.0 (Proprietary moat) moat. Corporate profile: Dux-Soup (founded 2015, HQ Mountain View, California, United States) vs. Fiber AI (founded 2023, HQ San Francisco, California, United States, $4.3M funding). Fact-checked by Sarah Per (Oct 14, 2026) for Dux-Soup and Vasilia Xia (Oct 12, 2026) for Fiber AI. At a 5-seat team baseline, Dux-Soup starts at ~$41/mo vs Fiber AI at ~$300/mo.
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: ~$41/mo (From $41.25/mo) · Autonomy: L3 · Conditional automation · Moat: 3.6/5.0 (Proprietary moat)
Target fit: Creators / Solo (Web SaaS)
Fiber AI
Autonomous outbound sales platform and live B2B identity data infrastructure powering programmatic prospecting, verified contact enrichment, and agentic.
5-Seat Floor: ~$300/mo (From $300/mo) · Autonomy: L3 · Conditional automation · Moat: 4.2/5.0 (Proprietary moat)
Target fit: B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) (Web SaaS)
How Dux-Soup and Fiber AI differ
- Entry price: Dux-Soup starts lower (From $41.25/mo) than Fiber AI (From $300/mo).
- Published tier ladder: Dux-Soup documents 3 priced tiers (Entry / Starter $41.25/mo, Growth / Professional $55/mo, Scale / Advanced $74.17/mo); Fiber AI documents 2 priced tiers (Entry / Starter $300/mo, Growth $900/mo).
- Moat score: Fiber AI scores 4.2/5.0 vs. Dux-Soup at 3.6/5.0 (Proprietary moat).
- Dux-Soup was founded earlier (2015) than Fiber AI (2023).
- Headquarters: Dux-Soup in Mountain View, California, United States, Fiber AI in San Francisco, California, United States.
- Funding stage: Dux-Soup is Venture-backed; Fiber AI is Seed.
- Company headcount: Dux-Soup is 1-10 employees; Fiber AI is 11-50 employees.
- Audience: Dux-Soup targets Creators / Solo; Fiber AI targets B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps).
- Ecosystem stack: Dux-Soup connects with Salesforce, Slack, LinkedIn; Fiber 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 Fiber 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, Slack, LinkedIn.
- 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 Fiber 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 real-time identity graph indexing over 850 million professional records, coupled with direct programmatic APIs optimized for consumption by autonomous sales and recruiting agents.
- Commercial Model Fit: Your procurement budget aligns with From $300/mo.
Walk away from Fiber AI if
- Walk away if your team is at early validation stage with a <$250/mo tool budget (Fiber AI starts at From $300/mo before seat or usage expansion).
- Walk away if your workflow cannot tolerate deliverability infrastructure maintenance: Sustained high-volume agentic dispatch risks domain reputation degradation if secondary mailbox rotation and warming protocols are not strictly orchestrated by the customer.
- Walk away if credit consumption volatility is a deal-breaker for your team: Automated multi-step agent runs execute cascading API queries that can rapidly exhaust monthly credit allocations during broad exploratory prospecting passes.
Side-by-side facts
| Field | Dux-Soup | Fiber AI |
|---|---|---|
| Subtrack | Autonomous B2B Sales Agents & AI BDRs | Autonomous B2B Sales Agents & AI BDRs |
| Pricing | From $41.25/mo | From $300/mo |
| Pricing model | Subscription | Subscription |
| Published pricing tiers | Entry / Starter ($41.25/mo) · Growth / Professional ($55/mo) · Scale / Advanced ($74.17/mo) | Entry / Starter ($300/mo) · Growth ($900/mo) |
| Free access | No free plan disclosed | No free plan disclosed |
| Enterprise plan | Not recorded | Not recorded |
| AI autonomy level | L3 · Conditional automation | L3 · Conditional automation |
| Moat tier & score | 3.6 / 5.0 · Proprietary moat | 4.2 / 5.0 · Proprietary moat |
| Delivery | Web SaaS | Web SaaS |
| Audience | Creators / Solo | B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) |
| Ecosystem integrations | Salesforce, Slack, LinkedIn | Outreach |
| Funding & backing | Venture-backed | $4.3M · Backed by Y Combinator, Liquid 2 Ventures |
| Founders | Will van der Sanden | Adi Agashe, Neel Mehta |
| Company size | 1-10 employees | 11-50 employees |
| Founded | 2015 | 2023 |
| Headquarters | Mountain View, California, United States | San Francisco, California, United States |
| Fact-checked | Sarah Per, Oct 14, 2026 | Vasilia Xia, Oct 12, 2026 |
| Governance & docs | — | API & Docs ↗ · Terms ↗ · Privacy ↗ |
Dux-Soup vs Fiber AI: TCO & constraint stress test
Test how both tools behave under your team size, monthly budget ceiling, CRM ecosystem, and governance guardrails.
Dux-Soup
Low Procurement Risk · Strong Fit- Published Self-Serve Entry Floor: Dux-Soup publishes a transparent entry point (From $41.25/mo) for initial validation before committing.
- Tier Fit for 5-Seat Scale: Growth / Professional ($55/mo): Verified $55/mo published rate on vendor pricing schedule.
- 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.
Fiber AI
High Deal-Risk · Constraint Mismatch- Budget Ceiling Breached ($900/mo vs. $800/mo cap): At 5 seats, Fiber AI's verified entry floor (From $300/mo) exceeds your $800/mo budget before add-ons or overages.
- Published Self-Serve Entry Floor: Fiber AI publishes a transparent entry point (From $300/mo) for initial validation before committing.
- Tier Fit for 5-Seat Scale: Growth ($900/mo): For high-growth teams optimizing outreach at scale.
- Primary Operational Bottleneck: Credit consumption volatility: Automated multi-step agent runs execute cascading API queries that can rapidly exhaust monthly credit allocations during broad exploratory prospecting passes.
Walk-Away Rule: Walk away if your team is at early validation stage with a <$250/mo tool budget (Fiber AI starts at From $300/mo before seat or usage expansion).
Negotiation Lever: Negotiate price-lock protection on additional seats and overage credits above the From $300/mo entry tier.
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
Fiber AI
Operational considerations and platform boundaries include: Deliverability infrastructure maintenance: Sustained high-volume agentic dispatch risks domain reputation degradation if secondary mailbox rotation and warming protocols are not strictly orchestrated by the customer.Full limitations in the Fiber AI review
Pricing notes & tier schedules
Dux-Soup: From $41.25/mo
The commercial model operates on a per-seat subscription structure delineated by execution topology.
- Entry / Starter ($41.25/mo, 1–2 seats): Verified $41.25/mo published rate on vendor pricing schedule.
- Growth / Professional ($55/mo, 5 seats): Verified $55/mo published rate on vendor pricing schedule.
- Scale / Advanced ($74.17/mo, 15 seats): Verified $74.17/mo published rate on vendor pricing schedule.
- 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.
Fiber AI: From $300/mo
Commercial access operates on a subscription structure paired with credit-based consumption tiers, starting at $300 per month for the Prospector tier.
- Entry / Starter ($300/mo, 1–2 seats): 15,000 credits per month
- Growth ($900/mo, 5 seats): For high-growth teams optimizing outreach at scale.
- Annual Billing Headline vs. Monthly Premium: Headline entry rates reflect annual billing commitments (Save 17%); month-to-month flexibility carries a higher effective monthly rate or requires annual prepayment.
- Credit & Usage Burn Multiplier: Automated workflows consume metered credits/usage quotas; multi-step enrichment, voice minutes, or high-frequency agent runs can trigger mid-cycle top-up packs.
Frequently asked questions: Dux-Soup vs Fiber AI
How does Dux-Soup pricing compare to Fiber AI in 2026?
Dux-Soup is listed at From $41.25/mo (subscription, no free plan disclosed), whereas Fiber AI is listed at From $300/mo (subscription, no free plan disclosed).
How do Dux-Soup and Fiber AI compare on AI autonomy and moat depth?
On the MarTechRadar L1–L5 scale, Dux-Soup is rated L3 · Conditional automation with a Proprietary moat moat (3.6/5.0), while Fiber AI is rated L3 · Conditional automation with a Proprietary moat moat (4.2/5.0).
Which teams are Dux-Soup and Fiber AI built for?
Dux-Soup is a Web SaaS product in Autonomous B2B Sales Agents & AI BDRs designed for Creators / Solo. Fiber 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 Fiber 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 Fiber AI: Operational considerations and platform boundaries include: Deliverability infrastructure maintenance: Sustained high-volume agentic dispatch risks domain reputation degradation if secondary mailbox rotation and warming protocols are not strictly orchestrated by the customer.
What are the hidden TCO drivers and contract negotiation levers for Dux-Soup vs Fiber 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 Fiber AI: Annual Billing Headline vs. Monthly Premium (Headline entry rates reflect annual billing commitments (Save 17%); month-to-month flexibility carries a higher effective monthly rate or requires annual prepayment.) Negotiation lever: Negotiate price-lock protection on additional seats and overage credits above the From $300/mo entry tier.
Excerpts are quoted verbatim from each fact-checked review. Last updated Oct 14, 2026.