Fuse AI vs Gravitas.io
Reviewed by MarTechRadar Research Desk. Pricing & entity snapshots verified Oct 16, 2026.
Fuse AI (Web SaaS) and Gravitas.io (Web SaaS) both compete in Autonomous B2B Sales Agents & AI BDRs. On pricing, Fuse AI lists Free plan · $60–$200/mo (free plan), whereas Gravitas.io lists Custom / enterprise pricing (no free plan disclosed). Technically, Fuse AI is rated L3 · Conditional automation with a 2.9/5.0 (Workflow-embedded) moat, while Gravitas.io is rated L3 · Conditional automation with a 3.1/5.0 (Workflow-embedded (strong)) moat. Corporate profile: Fuse AI (founded 2024, HQ San Francisco, California, $500K funding) vs. Gravitas.io (founded 2019, HQ London, Greater London). Verified by the MarTechRadar Research Desk (Oct 16, 2026 for Fuse AI; Oct 15, 2026 for Gravitas.io). At a 5-seat team baseline, Fuse AI starts at ~$60/mo (base) vs Gravitas.io at Custom quote.
Fuse AI
AI-native outbound sales platform consolidating B2B data enrichment, real-time buying signals, multi-channel sequencing, and Claude MCP integration.
5-User Team Cost: ~$60/mo (base) (Free plan · $60–$200/mo) · Autonomy: L3 · Conditional automation · Moat: 2.9/5.0 (Workflow-embedded)
Target fit: B2B SaaS, Marketing & Growth Teams (Web SaaS)
Gravitas.io
Autonomous B2B outbound pipeline generation platform combining AI agent workflows with senior sales development oversight for enterprise revenue teams.
5-User Team Cost: Custom quote (Custom / enterprise pricing) · Autonomy: L3 · Conditional automation · Moat: 3.1/5.0 (Workflow-embedded (strong))
Target fit: B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) (Web SaaS)
How Fuse AI and Gravitas.io differ
- Pricing model: Fuse AI is freemium, Gravitas.io is enterprise / quote.
- Fuse AI publishes an entry price (Free plan · $60–$200/mo); Gravitas.io does not (Custom / enterprise pricing).
- Fuse AI has a free plan; none is recorded for Gravitas.io.
- Moat tier: Gravitas.io is rated Workflow-embedded (strong), Fuse AI Workflow-embedded.
- Gravitas.io was founded earlier (2019) than Fuse AI (2024).
- Headquarters: Fuse AI in San Francisco, California, Gravitas.io in London, Greater London.
- Funding stage: Fuse AI is Pre-seed; Gravitas.io is Seed.
- Company headcount: Fuse AI is 2-10 employees; Gravitas.io is 11-50 employees.
- Audience: Fuse AI targets B2B SaaS, Marketing & Growth Teams; Gravitas.io targets B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps).
- Ecosystem stack: Fuse AI connects with Outreach, Slack, LinkedIn; Gravitas.io connects with Salesforce, HubSpot, Outreach, LinkedIn.
Computed from the fields below. Only editor-verified ratings and vendor-sourced prices are compared.
When to choose Fuse AI vs Gravitas.io (and when to walk away)
Choose Fuse AI if
- Target ICP & Stack Fit: You operate as B2B SaaS and Marketing & Growth Teams requiring a Web SaaS deployment for AI SDR, with verified ecosystem connectivity for Outreach, Slack, LinkedIn.
- L3 Architecture & Defensibility: Consolidating prospect data enrichment, buying signals, and multi-channel sequencing with native Anthropic Claude integration lets revenue teams automate outbound end-to-end.
- Commercial Model Fit: Your procurement budget aligns with Free plan · $60–$200/mo and want a self-serve free tier for zero-cost initial validation.
Walk away from Fuse AI if
- Walk away if your workflow requires uncapped enterprise volume on the Free plan · $60–$200/mo entry plan without upgrading tiers.
- Walk away if your workflow cannot tolerate credit consumption on deep enrichment: Running multi-step contact verification and AI research across large TAM lists consumes annual or monthly credit pools rapidly, creating a credit budgeting bottleneck on entry tiers.
- Walk away if enterprise legacy telephony depth is a deal-breaker for your team: While Fuse AI streamlines data enrichment, Claude-driven workflows, and digital sequencing, global enterprise call centers requiring localized hardware dialer compliance may still need dedicated telephony add-ons.
Choose Gravitas.io 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 Salesforce, HubSpot, Outreach, LinkedIn.
- L3 Architecture & Defensibility: Combines domain-specific outbound prompt logic with human-supervised verification loops, reducing hallucination risks in complex enterprise software prospecting.
- Commercial Model Fit: Your procurement budget aligns with Custom / enterprise pricing.
Walk away from Gravitas.io if
- 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).
- Walk away if your workflow cannot tolerate 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 if domain warming lead times is a deal-breaker for your team: Deploying fresh secondary outbound domains requires deliberate four-to-six-week warming cycles to avoid corporate spam filters, delaying immediate outbound velocity.
Side-by-side facts
| Field | Fuse AI | Gravitas.io |
|---|---|---|
| Subtrack | Autonomous B2B Sales Agents & AI BDRs | Autonomous B2B Sales Agents & AI BDRs |
| Pricing | Free plan · $60–$200/mo | Custom / enterprise pricing |
| Pricing model | Freemium | Enterprise / quote |
| Published pricing tiers | Free / Sandbox ($0) · Solo ($60/mo) · Standard ($200/mo) | Enterprise / Custom (Custom quote) |
| Free access | Free plan | No free plan disclosed |
| Enterprise plan | Not recorded | Yes |
| AI autonomy level | L3 · Conditional automation | L3 · Conditional automation |
| Moat tier & score | 2.9 / 5.0 · Workflow-embedded | 3.1 / 5.0 · Workflow-embedded (strong) |
| Delivery | Web SaaS | Web SaaS |
| Audience | B2B SaaS, Marketing & Growth Teams | B2B Sales Leaders, SDR/BDR Teams, Revenue Operations (RevOps) |
| Ecosystem integrations | Outreach, Slack, LinkedIn | Salesforce, HubSpot, Outreach, LinkedIn |
| Compliance & governance | GDPR, CCPA | — |
| Funding & backing | $500K | Seed |
| Founders | Imogen Low, Saurav Bubber | — |
| Company size | 2-10 employees | 11-50 employees |
| Founded | 2024 | 2019 |
| Headquarters | San Francisco, California | London, Greater London |
| Fact-checked | MarTechRadar Research Desk, Oct 16, 2026 | MarTechRadar Research Desk, Oct 15, 2026 |
| Governance & docs | API & Docs ↗ · Terms ↗ · Privacy ↗ | Privacy ↗ |
Fuse AI vs Gravitas.io: TCO & constraint stress test
Test how both tools behave under your team size, monthly budget ceiling, CRM ecosystem, and governance guardrails.
Fuse AI
Low Procurement Risk · Strong Fit- Published Self-Serve Entry Floor: Fuse AI publishes a transparent entry point (Free plan · $60–$200/mo) with a free tier for initial validation before committing.
- Tier Fit for 5-Seat Scale: Standard ($200/mo): Everything in Solo, plus:
- Primary Operational Bottleneck: Credit Consumption on Deep Enrichment: Running multi-step contact verification and AI research across large TAM lists consumes annual or monthly credit pools rapidly, creating a credit budgeting bottleneck on entry tiers.
Walk-Away Rule: Walk away if your workflow requires uncapped enterprise volume on the Free plan · $60–$200/mo entry plan without upgrading tiers.
Negotiation Lever: Validate exact quota thresholds (seats, credits, or API calls) included in Fuse AI's Free plan · $60–$200/mo tier before converting from monthly to annual billing.
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
Fuse AI
Operational limitations and technical trade-offs include: Credit Consumption on Deep Enrichment: Running multi-step contact verification and AI research across large TAM lists consumes annual or monthly credit pools rapidly, creating a credit budgeting bottleneck on entry tiers.Full limitations in the Fuse AI 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
Official vendor architectural differentiators & migration proof
To help buyers evaluate real-world switching costs, verified founders, solutions architects, and PMMs at both Fuse AI and Gravitas.io can submit up to 3 evidence-backed architectural differentiators or verified customer migration case studies.
Why teams choose Fuse AI over Gravitas.io
Work at Fuse 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 Fuse AI Official Differentiators & Case Study →Why teams choose Gravitas.io over Fuse AI
Work at Gravitas.io? 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 Gravitas.io Official Differentiators & Case Study →Pricing notes & tier schedules
Fuse AI: Free plan · $60–$200/mo
Fuse AI offers a transparent self-serve pricing structure with a 20% discount on annual billing.
- Free / Sandbox ($0, 1–2 seats (Evaluation)): Entry free tier with capped usage or feature quotas for initial workflow testing.
- Solo ($60/mo, 1–2 seats): For founders and solo SDRs testing outbound.
- Standard ($200/mo, 5 seats): Everything in Solo, plus:
- Credit & Usage Burn Multiplier: Workflows on Fuse AI consume metered credits or usage quotas; voice/media minutes, multi-step synthesis, or high-frequency runs can exhaust base allocations and trigger mid-cycle top-up packs.
- Enterprise Governance & Add-On Gating: Advanced capabilities such as Single Sign-On (SSO), custom role permissions, or specialized analytics modules are gated behind upper tiers or paid add-ons.
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.
- Enterprise / Custom (Custom quote, 15–50+ seats (Enterprise SLA)): Sales-negotiated annual contract for custom volume, SSO/RBAC governance, and dedicated SLA.
- Credit & Usage Burn Multiplier: Workflows on Gravitas.io consume metered credits or usage quotas; multi-provider enrichment lookups, scraping runs, or bulk batch jobs can exhaust base allocations and trigger mid-cycle top-up packs.
- 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.
Frequently asked questions: Fuse AI vs Gravitas.io
How does Fuse AI pricing compare to Gravitas.io in 2026?
Fuse AI is listed at Free plan · $60–$200/mo (freemium, free plan), whereas Gravitas.io is listed at Custom / enterprise pricing (enterprise / quote, no free plan disclosed).
How do Fuse AI and Gravitas.io compare on AI autonomy and moat depth?
On the MarTechRadar L1–L5 scale, Fuse AI is rated L3 · Conditional automation with a Workflow-embedded moat (2.9/5.0), while Gravitas.io is rated L3 · Conditional automation with a Workflow-embedded (strong) moat (3.1/5.0).
Which teams are Fuse AI and Gravitas.io built for?
Fuse AI is a Web SaaS product in Autonomous B2B Sales Agents & AI BDRs designed for B2B SaaS, Marketing & Growth Teams. 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 Fuse AI vs Gravitas.io?
For Fuse AI: Operational limitations and technical trade-offs include: Credit Consumption on Deep Enrichment: Running multi-step contact verification and AI research across large TAM lists consumes annual or monthly credit pools rapidly, creating a credit budgeting bottleneck on entry tiers. 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.
What are the hidden TCO drivers and contract negotiation levers for Fuse AI vs Gravitas.io?
For Fuse AI: Credit & Usage Burn Multiplier (Workflows on Fuse AI consume metered credits or usage quotas; voice/media minutes, multi-step synthesis, or high-frequency runs can exhaust base allocations and trigger mid-cycle top-up packs.) Negotiation lever: Validate exact quota thresholds (seats, credits, or API calls) included in Fuse AI's Free plan · $60–$200/mo tier before converting from monthly to annual billing. For Gravitas.io: Credit & Usage Burn Multiplier (Workflows on Gravitas.io consume metered credits or usage quotas; multi-provider enrichment lookups, scraping runs, or bulk batch jobs can exhaust base allocations and trigger mid-cycle top-up packs.) 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.
Excerpts are quoted verbatim from each fact-checked review. Last updated Oct 16, 2026.