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Developer Tools · head to head

GitHub Copilot vs Nessus

GitHub Copilot logo

GitHub Copilot

Developer Tools

AI pair programmer for developers

From
$10/month
Free plan
No
Visit GitHub CopilotFull review
Nessus logo

Nessus

Cybersecurity

Vulnerability assessment solution

From
$4790/year
Free plan
No
Visit NessusFull review

The short version

  • GitHub Copilot starts at $10/mo, Nessus at $4790/yr.
  • Only GitHub Copilot lists code completion; only Nessus lists vulnerability scanning.
  • Where GitHub Copilot falls short: agent mode lacks deep tool orchestration and iterative execution compared to specialized agentic tools.
  • Where Nessus falls short: Nessus Professional is $4,790 for one year, with no free or low cost commercial tier.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which GitHub Copilot and Nessus actually diverge.

Attributes where GitHub Copilot and Nessus differ
AttributeGitHub CopilotNessus
Starting price$10/month$4790/year
PlatformsWeb, Windows, macOS, LinuxWindows, macOS, API
CategoryDeveloper ToolsCybersecurity
Founded20082002

Identical on both: pricing model (Subscription), free tier (No).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in GitHub Copilot

  • Code completion
  • Code generation
  • Chat interface
  • Multi-language support
  • VS Code
  • JetBrains IDEs
  • Neovim
  • Visual Studio

Only in Nessus

  • Vulnerability scanning
  • Configuration auditing
  • Malware detection
  • Web application scanning
  • Cloud scanning
  • Compliance checks
  • Patch auditing
  • Pre-built policies

What people use each for

The jobs each tool is most often brought in to do.

GitHub Copilot

  • ai tools managementnot Nessus
  • Workflow automationnot Nessus
  • Reportingnot Nessus

Nessus

  • Vulnerability scanning for individual practitionersnot GitHub Copilot
  • Enterprise vulnerability managementnot GitHub Copilot
  • Web application security assessmentsnot GitHub Copilot

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

GitHub Copilot

  • Agent mode lacks deep tool orchestration and iterative execution compared to specialized agentic tools
  • Suggestions for niche or specialized programming languages are less accurate due to limited training data
  • Less effective with non-English prompts or grammatically incorrect developer instructions
  • Free tier severely limited to 2,000 completions and 50 chat requests per month

Nessus

  • Nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • Multi year terms are the only discount route, at $9,330.95 for two years and $13,637.54 for three
  • It is a single user scanner, so team workflows mean migrating to another Tenable product
  • Tenable One vulnerability management is priced separately, starting at $3,500 a year for 100 assets

Pricing, plan by plan

GitHub Copilot

$10/month
  • Individual$10/mo
    • Code completions
    • Chat in IDE
    • CLI assistance
  • Business$19/mo
    • Organization management
    • Policy controls
    • Audit logs

Nessus

$4790/year
  • Nessus Professional$4,790/yr
    • 1 year license
    • Best for individual security professionals
  • Nessus Professional 2-Year$9,330.95/2 years
    • 2 year license with discounted rate vs. annual
  • Nessus Professional 3-Year$13,637.54/3 years
    • 3 year license with discounted rate vs. annual
  • Nessus Expert$6,790/yr
    • 1 year license
    • Enhanced capabilities vs. Professional

Which should you pick?

Choose GitHub Copilot if

  • You need code completion.
  • You work on Web, Windows, macOS, Linux.
  • You also want code generation.
GitHub Copilot review

Choose Nessus if

  • You need vulnerability scanning.
  • You work on Windows, macOS, API.
  • You also want configuration auditing.
Nessus review

Questions people ask

Is GitHub Copilot or Nessus better?
Neither clearly leads. GitHub Copilot starts at $10/month and Nessus at $4790/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GitHub Copilot or Nessus?
GitHub Copilot starts at $10/month and Nessus at $4790/year.
Does GitHub Copilot or Nessus run on more platforms?
GitHub Copilot runs on Web, Windows, macOS, Linux. Nessus runs on Windows, macOS, API.
What is GitHub Copilot best used for?
GitHub Copilot is most often used for ai tools management, workflow automation, reporting. Of those, ai tools management and workflow automation are not what Nessus is typically brought in for.
What can GitHub Copilot do that Nessus cannot?
GitHub Copilot covers Code completion, Code generation, Chat interface, Multi-language support. Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning.

Answered from the vendors’ own pages

GitHub Copilot: Does GitHub Copilot have a free tier?

Yes. GitHub Copilot Free offers 2,000 code completions and 50 chat requests per month at no cost with no credit card required. Students and open-source maintainers get free Pro access.

Source
Nessus: What is the cheapest Nessus option?

Nessus Professional starts at $4,790 per year for a 1-year license. Multi-year commitments offer discounts, with 2-year licenses at $9,330.95 and 3-year licenses at $13,637.54.

Source
GitHub Copilot: What IDEs and editors are supported?

GitHub Copilot works in VS Code, Visual Studio, JetBrains IDEs (IntelliJ, PyCharm, WebStorm), Vim, Neovim, and Azure Data Studio with extensions providing code suggestions and chat capabilities.

Source
Nessus: What is the difference between Nessus Professional and Expert?

Nessus Expert costs $6,790 per year for a 1-year license (compared to $4,790 for Professional) and includes enhanced capabilities. Multi-year rates are available at discounted prices.

Source
GitHub Copilot: What programming languages does Copilot support?

Copilot supports more than 10 core languages including JavaScript, TypeScript, Python, Java, C#, Go, and Rust. Performance is strongest for these popular languages with extensive open-source training data.

Source
Nessus: Does Nessus offer optional support or training?

Yes, Nessus offers add-on services: Advanced Support at $400/year provides 24x365 access to phone, email, community, and chat support. On-Demand Training costs $275/year for Fundamentals course access or $385/year for both Fundamentals and Advanced courses.

Source
GitHub Copilot: How does the free tier compare to paid plans?

Free tier limits completions and chat to 2,000 and 50 per month. Pro ($10/month) offers unlimited completions, while Pro+ ($39/month) adds access to frontier AI models and agent mode for autonomous multi-file edits.

Source
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