SimThe open-source AI workspace to build, distribute, and govern AI agents
vs
VoiceflowPlatform for building, testing and deploying chat and voice AI agents
Comparison · AI Agents · weekly run Nov 3
Sim vs Voiceflow
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Sim is the stronger AI pick in AI Agents: it has a visibility score of 2.3 versus 1.6 for Voiceflow.
Choose Sim if…
- You want the brand AI engines rank higher (2.3 vs 1.6)
- You need a self-hosted or on-premises option
- You need SOC 2 Type II or ISO 27001 coverage
- Technical control and model flexibility
Choose Voiceflow if…
- You need SOC 2 or ISO/IEC 27001:2022 or HIPAA coverage
- Visual design, testing, and launch of conversational and voice AI agents
- Strong enterprise reliability and certifications
- Recommended for customer support and conversational experiences
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Sim | Voiceflow |
|---|---|---|
| Visibility score | 2.3% | 1.6% |
| Change vs last week | New | New |
| Rank in AI Agents | #39 | #48 |
| Share of voice | 0.7% | 0.6% |
| Mentions this run | 5 | 4 |
| Positive in AI answers | — | 50% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Sim 0pp · Voiceflow 0pp over 0 weekly runs.
Engine by engine
Sim leads on 2 of 3 engines
ChatGPT
AI Mode
Perplexity
SimVoiceflow
Head to head in AI answers
0 engine answers name both brands
0Sim ranked higher
0Voiceflow ranked higher
Features, pricing & fit
| Dimension | Sim | Voiceflow |
|---|---|---|
| Pricing model | Per seat | — |
| Entry price | Free; paid from $25 per seat / mo | — |
| Free plan | Yes | — |
| Deployment | Cloud-hosted, or self-hosted in your own cloud with Docker or Kubernetes | Public cloud, dedicated VPC or on-premise hosting |
| Integrations | 275+ | — |
| Compliance | SOC 2 Type II, ISO 27001, GDPR | SOC 2, ISO/IEC 27001:2022, HIPAA, GDPR |
| Support | Dedicated support on the Enterprise plan | — |
| Founded | 2025 | 2019 |
| Headquarters | San Francisco, CA, United States | Toronto |
| Employees | 11–50 | — |
| Funding | Series A · $7M raised | Seed led by True Ventures · $35M raised |
| Best for | Companies that need to build, deploy, and govern AI agents across the organization with central control over access, spend, and data | Customer support and CX teams that build chat and voice AI agents |
Plans side by side
Sim
Free$0free forever
Pro$25per user/month, billed monthly
Max$100per user/month, billed monthly
EnterpriseCustomcustom, talk to sales
Voiceflow
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
Sim
- Technical control and model flexibility
- Self-hosting option
Voiceflow
- Visual design, testing, and launch of conversational and voice AI agents
- Strong enterprise reliability and certifications
- Recommended for customer support and conversational experiences
- Costs more than some alternatives
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Sim vs Voiceflow”, https://slateindex.ai/compare/sim-vs-voiceflow, data of Nov 3, 2026. Licence: CC BY 4.0.