Programming Enterprise Only

Cajal

Formal verification for compiled software with machine-checkable proof certificates

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PricingEnterprise Only
Starting priceContact sales
Free planUnknown
Free trialYes
APIUnknown
Open sourceNo
DeploymentCloud
Last verifiedJuly 30, 2026
Overview

Tool overview

Cajal is listed under Programming AI tools.

Summary

What is Cajal?

Cajal’s Tau analyzes compiled binaries against formal specifications and returns either a machine-checkable certificate of correctness or a structured bug report. It is built on the open-source Talos WebAssembly interpreter and targets high-assurance software teams.

Best fit

Best for

Security and software teams that need mathematical assurance for binaries

Audience

Who is it for?

Security engineering teamsFormal-methods engineersAI infrastructure teamsRegulated software vendorsIndependent software auditors
Recommendation

Decision note

Reviewed the official Tau product, contact, terms, and Talos repository. Compiled-binary verification, formal specifications, proof certificates, bug reports, company identity, paid order-form terms, and official outreach emails were confirmed.

Capabilities

Key features

Analyzes software at the compiled-binary level

Expresses required behavior as formal specifications

Produces machine-checkable correctness certificates

Returns structured reports when proofs fail

Uses a trusted formal-verification kernel

Builds on the open-source Talos interpreter

Workflows

Use cases

Verify security-critical compiled software

Audit AI-generated code beyond conventional tests

Produce evidence for regulated software reviews

Find binary behaviors that violate specifications

Validate WebAssembly execution and semantics

Strengths

Pros

  • Checks the artifact that actually runs
  • Produces auditable mathematical evidence
  • Can identify counterexamples when proof fails
  • Uses an openly inspectable interpreter component
Considerations

Cons

  • Public product pricing is not listed
  • Formal specifications require expert judgment
  • Coverage depends on stated assumptions and scope
Considerations

Limitations

A formal proof only guarantees the properties, assumptions, libraries, and execution model included in the verification scope. Teams still need to define correct specifications, assess environmental dependencies, review uncovered behavior, and maintain proof artifacts as binaries and requirements change.

Cost

Pricing details

Pricing modelEnterprise Only
Starting priceContact sales
Free planUnknown
Free trialYes
Pricing context

Billing options

Custom order formSubscriptionUsage-based
Pricing context

Pricing note

Cajal does not publish standard Tau plan prices. Its terms allow fees through order forms, subscriptions, online checkout, invoices, and usage-based arrangements. Confirm scope, proof coverage, support, and commercial terms through a demo.

View official pricing
Compatibility

Supported programming languages

  • English
Connectivity

Integrations

Talos

Lean 4

WebAssembly

Specs

Technical details

PlatformsWeb
Multilingual supportUnknown
Login requiredYes
Open sourceNo
LicenseProprietary
DeploymentCloud
CompanyCajal Technologies, Inc.
Launch year2026
Models / versionsTau Talos
Editions / plansTau
Data confidenceHigh
Last verifiedJuly 30, 2026
Documentation → Source code → Data source →
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Answers

Frequently asked questions

Cajal’s Tau analyzes compiled binaries against formal specifications and returns either a machine-checkable certificate of correctness or a structured bug report. It is built on the open-source Talos WebAssembly interpreter and targets high-assurance software teams.
Security and software teams that need mathematical assurance for binaries
The listed pricing model for Cajal is Enterprise only. Pricing can change, so users should verify the latest plan details on the official website.
Yes. The current profile indicates that a free trial is available.
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