Cluster vs Gravitas.io
Both tools are listed under Autonomous B2B Sales Agents & AI BDRs, and both have been fact-checked by a named editor. This page lines up their structured data and quotes each review’s limitations and pricing notes; it does not pick a winner.
Cluster
Go-to-market infrastructure platform providing autonomous sales agents with aggregated access to 50+ data providers and real-time buyer intent signals.
Pricing: Custom / enterprise pricing · Autonomy: L3 · Conditional automation · Moat: 3.6/5.0 (Proprietary moat)
Target fit: B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) (Web SaaS)
Gravitas.io
Autonomous B2B outbound pipeline generation platform combining AI agent workflows with senior sales development oversight for enterprise revenue teams.
Pricing: Custom / enterprise pricing · Autonomy: L3 · Conditional automation · Moat: 3.6/5.0 (Proprietary moat)
Target fit: B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) (Web SaaS)
How Cluster and Gravitas.io differ
- Gravitas.io was founded earlier (2019) than Cluster (2026).
- Headquarters: Cluster in New York, NY, Gravitas.io in London, Greater London.
Computed from the fields below. Only editor-verified ratings and vendor-sourced prices are compared.
Side-by-side facts
| Field | Cluster | Gravitas.io |
|---|---|---|
| Subtrack | Autonomous B2B Sales Agents & AI BDRs | Autonomous B2B Sales Agents & AI BDRs |
| Pricing | Custom / enterprise pricing | Custom / enterprise pricing |
| Pricing model | Enterprise / quote | Enterprise / quote |
| Free access | No free plan disclosed | No free plan disclosed |
| Enterprise plan | Yes | Yes |
| AI autonomy level | L3 · Conditional automation | L3 · Conditional automation |
| Moat tier | Proprietary moat | Proprietary moat |
| Delivery | Web SaaS | Web SaaS |
| Audience | B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) | B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) |
| Headquarters | New York, NY | London, Greater London |
| Fact-checked | Jagmeet Sine, Oct 14, 2026 | Vasilia Xia, Oct 15, 2026 |
Cluster vs Gravitas.io: TCO & constraint stress test
Test how both tools behave under your team size, monthly budget ceiling, CRM ecosystem, and governance guardrails.
Cluster
High Deal-Risk · Constraint Mismatch- Opaque Enterprise Quoting vs. SMB/Mid-Market Budget: Cluster 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 procurement for Cluster operates under custom enterprise pricing models accessible by consulting the vendor sales team.
- Primary Operational Bottleneck: Upstream Schema Volatility: Aggregating 50+ external data providers exposes execution pipelines to sudden vendor API alterations and field-mapping drift that require ongoing administrative revalidation.
Walk-Away Rule: Walk away if you require transparent self-serve monthly billing or your budget ceiling is under $1,000/mo (Cluster requires sales-gated custom quoting).
Negotiation Lever: Demand a 30- to 60-day paid pilot opt-out clause in the Cluster order form before signing a 12-month enterprise commitment.
Gravitas.io
High Deal-Risk · Constraint Mismatch- Opaque Enterprise Quoting vs. SMB/Mid-Market Budget: Gravitas.io 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: Gravitas.io operates under a tailored enterprise procurement model without publicly listed baseline tiers. Commercial pricing is available on request through tailored enterprise sales quotes based on organizational scale, outbound volume parameters, and target market complexity.
- Primary Operational Bottleneck: Throughput Scaling Bottlenecks: Because the platform couples programmatic execution with senior-level human oversight for nuanced positioning, outbound cadence volume cannot scale arbitrarily fast like fully headless mass-messaging tools.
Walk-Away Rule: Walk away if you require transparent self-serve monthly billing or your budget ceiling is under $1,000/mo (Gravitas.io requires sales-gated custom quoting).
Negotiation Lever: Demand a 30- to 60-day paid pilot opt-out clause in the Gravitas.io order form before signing a 12-month enterprise commitment.
Limitations
Cluster
Operational considerations and platform boundaries include: Upstream Schema Volatility: Aggregating 50+ external data providers exposes execution pipelines to sudden vendor API alterations and field-mapping drift that require ongoing administrative revalidation.Full limitations in the Cluster review
Gravitas.io
Operational considerations and platform boundaries include: Throughput Scaling Bottlenecks: Because the platform couples programmatic execution with senior-level human oversight for nuanced positioning, outbound cadence volume cannot scale arbitrarily fast like fully headless mass-messaging tools.Full limitations in the Gravitas.io review
Pricing notes
Cluster: Custom / enterprise pricing
Commercial procurement for Cluster operates under custom enterprise pricing models accessible by consulting the vendor sales team.Pricing details in the Cluster review
Gravitas.io: Custom / enterprise pricing
Gravitas.io operates under a tailored enterprise procurement model without publicly listed baseline tiers. Commercial pricing is available on request through tailored enterprise sales quotes based on organizational scale, outbound volume parameters, and target market complexity.Pricing details in the Gravitas.io review
Frequently asked questions: Cluster vs Gravitas.io
How does Cluster pricing compare to Gravitas.io in 2026?
Cluster is listed at Custom / enterprise pricing (enterprise / quote, no free plan disclosed), whereas Gravitas.io is listed at Custom / enterprise pricing (enterprise / quote, no free plan disclosed).
How do Cluster and Gravitas.io compare on AI autonomy and moat depth?
On the MarTechRadar L1–L5 scale, Cluster is rated L3 · Conditional automation with a Proprietary moat moat (3.6/5.0), while Gravitas.io is rated L3 · Conditional automation with a Proprietary moat moat (3.6/5.0).
Which teams are Cluster and Gravitas.io built for?
Cluster is a Web SaaS product in Autonomous B2B Sales Agents & AI BDRs designed for B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps). Gravitas.io 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 Cluster vs Gravitas.io?
For Cluster: Operational considerations and platform boundaries include: Upstream Schema Volatility: Aggregating 50+ external data providers exposes execution pipelines to sudden vendor API alterations and field-mapping drift that require ongoing administrative revalidation. For Gravitas.io: Operational considerations and platform boundaries include: Throughput Scaling Bottlenecks: Because the platform couples programmatic execution with senior-level human oversight for nuanced positioning, outbound cadence volume cannot scale arbitrarily fast like fully headless mass-messaging tools.
Excerpts are quoted verbatim from each fact-checked review. Last updated Oct 15, 2026.