Responsive vs Sirion
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Responsive is the stronger AI pick in Proposals & Contracts: it has a visibility score of 10.7 versus 2.5 for Sirion, and ranks ahead in 67% of the answers that name both.
Choose Responsive if…
- You want the brand AI engines rank higher (10.7 vs 2.5)
- AI answers describe it more positively (33% vs 0% positive)
- You need GDPR or AICPA SOC 2 or ISO 27001 or ISO 27701 or ISO 42001 or CCPA or STAR Level 1 coverage
- Strong enterprise choice for high-volume RFPs
Choose Sirion if…
- You need ISO 27001:2022 or SOC 1 Type II or SOC 2 Type II coverage
- AI-native agentic contract automation
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Responsive | Sirion |
|---|---|---|
| Visibility score | 10.7% | 2.5% |
| Change vs last week | New | New |
| Rank in Proposals & Contracts | #10 | #24 |
| Share of voice | 4% | 1% |
| Mentions this run | 20 | 5 |
| Positive in AI answers | 33% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Responsive 0pp · Sirion 0pp over 0 weekly runs.
Engine by engine
Responsive leads on 2 of 3 engines
Head to head in AI answers
3 engine answers name both brands
| Prompt | Engine | Responsive | Sirion |
|---|---|---|---|
| What are the best Proposals & Contracts tools in 2026? | AI Mode | #3 | #8 |
| Which Proposals & Contracts vendors do analysts recommend? | ChatGPT | #8 | #3 |
| Official website of the top proposal and contract tool vendors | ChatGPT | #4 | #14 |
Features, pricing & fit
| Dimension | Responsive | Sirion |
|---|---|---|
| Pricing model | Flat tiers | — |
| Entry price | $10,000 / mo | — |
| Free plan | No | — |
| Deployment | Flexible hosting options | Cloud-based SaaS platform |
| Integrations | 32+ | — |
| Compliance | GDPR, AICPA SOC 2, ISO 27001, ISO 27701, ISO 42001, CCPA, STAR Level 1 | ISO 27001:2022, SOC 1 Type II, SOC 2 Type II |
| Support | Professional Services with APMP-certified experts for onboarding and training, Premium deployment and support on Growth and Enterprise editions | — |
| Founded | 2015 | 2012 |
| Headquarters | Frisco, Texas, United States | Lehi, Utah, United States |
| Employees | 501–1,000 | 501–1,000 |
| Funding | Round led by Elevate Capital | Series C |
| Best for | Dedicated proposal or operations teams with legal, InfoSec and compliance involvement, and global or multi-region operations. | — |
Plans side by side
Responsive
Sirion
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
Responsive
- Strong enterprise choice for high-volume RFPs
- Designed for complex enterprise responses
- Top pick for RFP response management
- Good for security questionnaires and large-scale content reuse
- Recommended in G2's 2026 RFP software list
Sirion
- AI-native agentic contract automation
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Responsive vs Sirion”, https://slateindex.ai/compare/responsive-vs-sirion, data of Nov 2, 2026. Licence: CC BY 4.0.