Proposify vs Sirion
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Proposify is the stronger AI pick in Proposals & Contracts: it has a visibility score of 41.4 versus 2.5 for Sirion, and ranks ahead in 75% of the answers that name both.
Choose Proposify if…
- You want the brand AI engines rank higher (41.4 vs 2.5)
- AI answers describe it more positively (49% vs 0% positive)
- You need SOC 2 Type 2 or GDPR coverage
- Visually rich, branded proposal design
Choose Sirion if…
- You need ISO 27001:2022 or SOC 1 Type II or SOC 2 Type II coverage
- You prefer a larger, established vendor (501–1,000 employees)
- AI-native agentic contract automation
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Proposify | Sirion |
|---|---|---|
| Visibility score | 41.4% | 2.5% |
| Change vs last week | New | New |
| Rank in Proposals & Contracts | #2 | #24 |
| Share of voice | 9.4% | 1% |
| Mentions this run | 49 | 5 |
| Positive in AI answers | 49% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Proposify 0pp · Sirion 0pp over 0 weekly runs.
Engine by engine
Proposify leads on 3 of 3 engines
Head to head in AI answers
4 engine answers name both brands
| Prompt | Engine | Proposify | Sirion |
|---|---|---|---|
| How long does it take to roll out a proposal and contract tool? | ChatGPT | #3 | #6 |
| What are the best Proposals & Contracts tools in 2026? | AI Mode | #4 | #8 |
| Which Proposals & Contracts vendors do analysts recommend? | ChatGPT | #12 | #3 |
| Official website of the top proposal and contract tool vendors | ChatGPT | #2 | #14 |
Features, pricing & fit
| Dimension | Proposify | Sirion |
|---|---|---|
| Pricing model | Per seat | — |
| Entry price | $49 per seat / mo | — |
| Free plan | No · 14-day trial | — |
| Deployment | Cloud-hosted SaaS | Cloud-based SaaS platform |
| Compliance | SOC 2 Type 2, GDPR | ISO 27001:2022, SOC 1 Type II, SOC 2 Type II |
| Support | Email and chat support, Phone and Zoom support, Dedicated success manager on Scale plan, Priority support | — |
| Founded | 2013 | 2012 |
| Headquarters | Halifax, Nova Scotia, Canada | Lehi, Utah, United States |
| Employees | 51–200 | 501–1,000 |
| Funding | Growth Equity - II (CB Insights) | Series C |
| Best for | Busy sales teams that send proposals and quotes, such as consultants and service firms in landscaping, janitorial and construction. | — |
Plans side by side
Proposify
Sirion
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
Proposify
- Visually rich, branded proposal design
- Robust tracking and granular proposal analytics
- Well-regarded with strong user satisfaction
- Quotes and contracts with built-in approval workflows
- Discounted annual pricing lowers effective per-user cost
Sirion
- AI-native agentic contract automation
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Proposify vs Sirion”, https://slateindex.ai/compare/proposify-vs-sirion, data of Nov 2, 2026. Licence: CC BY 4.0.