1. [Home](/) 2. [Comparisons](/comparisons) 3. ContraVault AI vs Tendrio (2026) Comparisons # ContraVault AI vs Tendrio (2026): pricing, features and verdict ContraVault AI: Tender analysis for construction and energy bids: go/no-go and risk flags first, a draft second. Tendrio: AI tender analysis and go/no-go calls. ## Quick verdict Choose ContraVault AI for construction and energy bid teams that need to triage thousand-page tender packs before they commit to pricing; choose Tendrio for bid teams that need to triage tenders and build a compliance matrix quickly. Neither publishes a comparable starting price, so quote both on the same scope. In our capability model ContraVault AI leads on answer library and approval workflows, while Tendrio leads on security questionnaires and self-serve setup. Both profiles reviewed Oct 2026 2 of 70 profiles, one scoring modelNo paid placement[Sources checked: 17](#source-registry) ## Choose ContraVault AI or Tendrio ### CO![ContraVault AI logo](https://www.google.com/s2/favicons?domain=contravault.com&sz=128) Choose ContraVault AI when - Construction and energy bid teams that need to triage thousand-page tender packs before they commit to pricing. - You need stronger answer library and approval workflows than Tendrio offers. ### TE![Tendrio logo](https://www.google.com/s2/favicons?domain=tendrio.ai&sz=128) Choose Tendrio when - Bid teams that need to triage tenders and build a compliance matrix quickly. - You need stronger security questionnaires and self-serve setup than ContraVault AI offers. **Key takeaways** - **ContraVault AI:** Construction and energy bid teams that need to triage thousand-page tender packs before they commit to pricing. - **Tendrio:** Bid teams that need to triage tenders and build a compliance matrix quickly. - **Pricing:** ContraVault AI Custom vs Tendrio Custom ## Side-by-side comparison __Scores run 0 (not offered) to 3 (category-leading). Edge marks who leads the row; Match means the scores are the same. Confirm certifications on the vendor site before a security review.__ | Capability | ContraVault AI | Tendrio | Edge | | ----------------------- | --------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------- | -------------- | | Best for | Construction and energy bid teams that need to triage thousand-page tender packs before they commit to pricing. | Bid teams that need to triage tenders and build a compliance matrix quickly. | \- | | Starting price | Custom | Custom | Match | | Free tier | No | No | Match | | RFPs | 2/3 | 2/3 | Match | | DDQs | 0/3 | 0/3 | Match | | Security questionnaires | 0/3 | 1/3 | Tendrio | | AI drafting | 1/3 | 1/3 | Match | | Answer library | 1/3 | 0/3 | ContraVault AI | | Source attribution | 2/3 | 2/3 | Match | | Workflow & approvals | 1/3 | 0/3 | ContraVault AI | | Integrations | 1/3 | 1/3 | Match | | Self-serve onboarding | 0/3 | 1/3 | Tendrio | | ISO 27001 | ISO 27001:2022 | Not listed | \- | | SOC 2 | SOC 2 Type 2 | Not listed | \- | | US hosting | Not listed | Not listed | \- | | EU hosting | Not listed | Not listed | \- | | Slack | Not listed | Not listed | \- | | Microsoft Teams | Not listed | Not listed | \- | | AWS, Azure, GCP | AWS | Not listed | \- | | Listed integrations | Procore, Autodesk Construction Cloud, PlanGrid, Microsoft Project | None listed | \- | | Certifications | SOC 2 Type II, ISO 27001:2022, ISO 27017, ISO 27018, ISO 9001 | None listed | \- | ## What they look like ### CO![ContraVault AI logo](https://www.google.com/s2/favicons?domain=contravault.com&sz=128) ContraVault AI ![Screenshot of the ContraVault AI website](/screenshots/contravault-ai.webp) ### TE![Tendrio logo](https://www.google.com/s2/favicons?domain=tendrio.ai&sz=128) Tendrio ![Screenshot of the Tendrio website](/screenshots/tendrio.webp) ## Security: ISO 27001, SOC 2, and regional hosting Put ContraVault AI and Tendrio through the same three questions a security reviewer will ask: ISO 27001, SOC 2, and whether you can keep the tenancy in the US or the EU. Cells say **Not listed** when we could not find the claim on a public vendor page. __Confirm certificates and residency on the vendor site or Trust Center before a formal review.ContraVault AI: The privacy page says processing and storage stay within one primary region on AWS but does not name the region. A dedicated instance or VPC is optional on Enterprise.__ | Check | ContraVault AI | Tendrio | | ---------- | ------------------------------------------------------------------------------ | ---------- | | ISO 27001 | ISO 27001:2022 [contravault.com](https://www.contravault.com/privacy), 2026-10 | Not listed | | SOC 2 | SOC 2 Type 2 [contravault.com](https://www.contravault.com/privacy), 2026-10 | Not listed | | US hosting | Not listed | Not listed | | EU hosting | Not listed | Not listed | ## Slack and Microsoft Teams During a live questionnaire, SMEs get pinged in Slack or Teams, not in a vendor portal. Here is what ContraVault AI and Tendrio publish for those two connections. __Native chat apps only. CRM, storage and identity connectors stay in the integrations list.__ | Connection | ContraVault AI | Tendrio | | --------------- | -------------- | ---------- | | Slack | Not listed | Not listed | | Microsoft Teams | Not listed | Not listed | ## Subprocessors: the big three clouds, then the niche names Compare ContraVault AI and Tendrio on AWS, Azure and GCP first. Then scan for niche processors a reviewer should pause on: third-party LLMs, session replay, or support that leaves the region you elected. __Cloud row lists the big three only. Niche names sit in the notes when the vendor published them.__ | Layer | ContraVault AI | Tendrio | | --------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------ | | AWS, Azure, GCP | AWS | Not listed | | Watch-outs | No niche processors flagged in our sourced list.The privacy page states that ContraVault AI does not engage subcontractors for data processing, and it does not name a model provider. Ask for the full subprocessor list. | No niche processors flagged in our sourced list. | ## Pricing breakdown ### ContraVault AI Three plans are listed with a feature grid but no prices; every plan routes through a demo request. SSO and audit trails are add-ons on Starter, as are API access and integrations. ### Tendrio Quote-based plans (Starter, Business, Enterprise, Custom) sized by monthly requirement evaluations and active tenders. One-month free trial, no credit card. On-premise deployment costs extra. ## Who should pick ContraVault AI **ContraVault AI** is the pick for construction and energy bid teams that need to triage thousand-page tender packs before they commit to pricing. - Built for the read-and-decide stage: go/no-go calls and risk flags land on large tender packs before any writing starts. - Named construction and energy case studies on its own site, including Voltas and Toyo Engineering. - Its privacy and security page states SOC 2 Type 2 and ISO 27001:2022, plus the ISO 27017 and 27018 cloud standards, on AWS with KMS-managed encryption. ## Who should pick Tendrio **Tendrio** is the pick for bid teams that need to triage tenders and build a compliance matrix quickly. - Turns a tender package into a compliance matrix marked met, partially met, or gap. - Go/no-go guidance helps teams avoid chasing bad-fit bids. - References requirements back to the source documents. ## Final verdict These tools solve different problems, so the right pick depends on your priorities. In our capability model, ContraVault AI leads on answer library and workflow and approvals, while Tendrio leads on security questionnaires and self-serve setup. Tendrio has the edge on DDQs and security questionnaires combined in our capability model. Many teams also run a dedicated AI-drafting tool alongside their existing stack rather than switching wholesale. Read the full [ContraVault AI review](/contravault-ai) or [Tendrio review](/tendrio), or browse [all RFP & DDQ software](/). ## Frequently asked questions What is the difference between ContraVault AI and Tendrio? ContraVault AI: Tender analysis for construction and energy bids: go/no-go and risk flags first, a draft second. Tendrio: AI tender analysis and go/no-go calls. ContraVault AI is best for construction and energy bid teams that need to triage thousand-page tender packs before they commit to pricing. Tendrio is best for bid teams that need to triage tenders and build a compliance matrix quickly. Which is cheaper, ContraVault AI or Tendrio? Neither publishes a comparable starting price, so request quotes for the same scope before comparing cost. Is ContraVault AI or Tendrio better for DDQs and security questionnaires? Tendrio scores higher on DDQ and security-questionnaire handling in our capability model, though both support them. Do ContraVault AI and Tendrio both handle RFPs? ContraVault AI: yes, a core strength. Tendrio: yes, a core strength. Which should you choose, ContraVault AI or Tendrio? ContraVault AI is the pick for construction and energy bid teams that need to triage thousand-page tender packs before they commit to pricing. Tendrio is the pick for bid teams that need to triage tenders and build a compliance matrix quickly. Are there alternatives to ContraVault AI and Tendrio? Yes. Browse the full directory of RFP, DDQ, and security-questionnaire platforms for more options and side-by-side comparisons. Do ContraVault AI and Tendrio list ISO 27001, SOC 2, and US or EU hosting? ContraVault AI: ISO 27001 ISO 27001:2022, SOC 2 SOC 2 Type 2, US Not listed, EU Not listed, Slack Not listed, Teams Not listed, clouds AWS. Tendrio: ISO 27001 Not listed, SOC 2 Not listed, US Not listed, EU Not listed, Slack Not listed, Teams Not listed, clouds Not listed. Confirm both on the vendor sites. ## Source registry Every page we read for these profiles, with the month it was last checked. Anything without a source is shown as not publicly disclosed. Spot an outdated fact? Send it from the [corrections page](/corrections). ### [ContraVault AI](/contravault-ai) Pricing - [contravault.com/pricing](https://www.contravault.com/pricing)Checked Oct 2026 · Pricing model · Starting price · Free tier · Plan tiers · Pricing note · Limitation · RFPs score · DDQs score · AI drafting score · Source attribution score · Workflow & approvals score · Self-serve onboarding score Security and compliance - [contravault.com/privacy](https://www.contravault.com/privacy)Checked Oct 2026 · ISO 27001 · SOC 2 · Hosting · Subprocessors · Certifications · Headquarters · Parent company Product and integrations - [contravault.com/industry/it](https://www.contravault.com/industry/it)Checked Oct 2026 · Security questionnaires score - [contravault.com/bid-submission](https://www.contravault.com/bid-submission)Checked Oct 2026 · Answer library score - [contravault.com](https://www.contravault.com/)Checked Oct 2026 · Integrations score · Integrations - [contravault.com/customers/voltas](https://www.contravault.com/customers/voltas)Checked Oct 2026 · Named customers - [contravault.com/customers/sterlingandwilson](https://www.contravault.com/customers/sterlingandwilson)Checked Oct 2026 · Named customers - [contravault.com/customers/TOYO](https://www.contravault.com/customers/TOYO)Checked Oct 2026 · Named customers - [contravault.com/customers/Paharpur](https://www.contravault.com/customers/Paharpur)Checked Oct 2026 · Named customers - [contravault.com/customers/htlaircon](https://www.contravault.com/customers/htlaircon)Checked Oct 2026 · Named customers - [contravault.com/customers/all-scope](https://www.contravault.com/customers/all-scope)Checked Oct 2026 · Named customers - [contravault.com/customers/Redfox](https://www.contravault.com/customers/Redfox)Checked Oct 2026 · Named customers - [inc42.com/buzz/exclusive-ai-startup-contravault-raises-3-1-mn-t…](https://inc42.com/buzz/exclusive-ai-startup-contravault-raises-3-1-mn-to-expand-in-the-us)Checked Oct 2026 · Named customers · Founded · Funding Third-party reviews - No review-site source recorded. ### [Tendrio](/tendrio) Pricing - [tendrio.ai/pricing](https://www.tendrio.ai/pricing)Checked Oct 2026 · Pricing model · Starting price · Free tier · Pricing note · Limitation · Self-serve onboarding score Security and compliance - No security source URL recorded. Treat certifications and hosting as not publicly disclosed. Product and integrations - [tendrio.ai/why-tendrio](https://www.tendrio.ai/why-tendrio)Checked Oct 2026 · DDQs score · Answer library score · Source attribution score · Workflow & approvals score - [csg.com/en/companies/tendrio](https://csg.com/en/companies/tendrio)Checked Oct 2026 · Parent company - [tendrio.ai/faq](https://www.tendrio.ai/faq)Checked Oct 2026 · Limitation Third-party reviews - No review-site source recorded. Table of Contents - [Choose ContraVault AI or Tendrio](#choose-contravault-ai-or-tendrio) - [Side-by-side comparison](#side-by-side-comparison) - [What they look like](#what-they-look-like) - [Security: ISO 27001, SOC 2, and regional hosting](#security-iso-27001-soc-2-and-regional-hosting) - [Slack and Microsoft Teams](#slack-and-microsoft-teams) - [Subprocessors: the big three clouds, then the niche names](#subprocessors-the-big-three-clouds-then-the-niche-names) - [Pricing breakdown](#pricing-breakdown) - [Who should pick ContraVault AI](#who-should-pick-contravault-ai) - [Who should pick Tendrio](#who-should-pick-tendrio) - [Final verdict](#final-verdict) - [Frequently asked questions](#frequently-asked-questions) - [Source registry](#source-registry) [Summarize with ChatGPT](https://chatgpt.com/?q=Summarize%20this%20article%3A%20https%3A%2F%2Frfp-software-tools.com%2Fcomparisons%2Fcontravault-ai-vs-tendrio-2026)[Summarize with Claude](https://claude.ai/new?q=Summarize%20this%20article%3A%20https%3A%2F%2Frfp-software-tools.com%2Fcomparisons%2Fcontravault-ai-vs-tendrio-2026)[Summarize with Perplexity](https://www.perplexity.ai/?q=Summarize%20this%20article%3A%20https%3A%2F%2Frfp-software-tools.com%2Fcomparisons%2Fcontravault-ai-vs-tendrio-2026) Share this article ## Related articles [**DealHub vs Tendrio (2026)**A side-by-side look at DealHub and Tendrio: pricing, capabilities, and who each is best for.RFP Software Tools · October 7, 2026](/comparisons/dealhub-vs-tendrio-2026)[**SiftHub vs Tendrio (2026)**A side-by-side look at SiftHub and Tendrio: pricing, capabilities, and who each is best for.RFP Software Tools · October 7, 2026](/comparisons/sifthub-vs-tendrio-2026)[**ContraVault AI vs Kantiv (2026)**A side-by-side look at ContraVault AI and Kantiv: pricing, capabilities, and who each is best for.RFP Software Tools](/comparisons/contravault-ai-vs-kantiv-2026)[**Docket vs Tendrio (2026)**A side-by-side look at Docket and Tendrio: pricing, capabilities, and who each is best for.RFP Software Tools](/comparisons/docketai-vs-tendrio-2026)