RFP Software Tools
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 placementSources checked: 17

Choose ContraVault AI or Tendrio

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.

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.
CapabilityContraVault AITendrioEdge
Best forConstruction 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 priceCustomCustomMatch
Free tierNoNoMatch
RFPs2/32/3Match
DDQs0/30/3Match
Security questionnaires0/31/3Tendrio
AI drafting1/31/3Match
Answer library1/30/3ContraVault AI
Source attribution2/32/3Match
Workflow & approvals1/30/3ContraVault AI
Integrations1/31/3Match
Self-serve onboarding0/31/3Tendrio
ISO 27001ISO 27001:2022Not listed-
SOC 2SOC 2 Type 2Not listed-
US hostingNot listedNot listed-
EU hostingNot listedNot listed-
SlackNot listedNot listed-
Microsoft TeamsNot listedNot listed-
AWS, Azure, GCPAWSNot listed-
Listed integrationsProcore, Autodesk Construction Cloud, PlanGrid, Microsoft ProjectNone listed-
CertificationsSOC 2 Type II, ISO 27001:2022, ISO 27017, ISO 27018, ISO 9001None listed-

What they look like

ContraVault AI

Screenshot of the ContraVault AI website

Tendrio

Screenshot of the Tendrio website

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.
CheckContraVault AITendrio
ISO 27001ISO 27001:2022 contravault.com, 2026-10Not listed
SOC 2SOC 2 Type 2 contravault.com, 2026-10Not listed
US hostingNot listed Not listed
EU hostingNot 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.
ConnectionContraVault AITendrio
SlackNot listed Not listed
Microsoft TeamsNot 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.
LayerContraVault AITendrio
AWS, Azure, GCPAWSNot listed
Watch-outsNo 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 or Tendrio review, 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.

ContraVault AI

Pricing

  • contravault.com/pricingChecked 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/privacyChecked Oct 2026 · ISO 27001 · SOC 2 · Hosting · Subprocessors · Certifications · Headquarters · Parent company

Product and integrations

Third-party reviews

  • No review-site source recorded.

Tendrio

Pricing

  • tendrio.ai/pricingChecked 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

Third-party reviews

  • No review-site source recorded.
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