
ProjectDiscovery · Neo by ProjectDiscovery: AI Security Agent for Autonomous Pentesting, PR Security Review and Vulnerability Triage
Neo is ProjectDiscovery's AI security platform, from the team behind the open-source Nuclei, Subfinder and httpx tools. Its agents pentest running web apps and APIs, map your attack surface, review pull requests, and reproduce incoming vulnerability reports in sandboxes to decide which ones are real. It suits AppSec teams, MSSPs and bug bounty hunters who want proven findings instead of a scanner list, with a free trial allowance, self-serve plans from $200 per seat per month, and Enterprise on-prem or dedicated VPC deployment.
Best for
AppSec and product security teams, MSSPs and bug bounty hunters who want an agent to pentest running apps, review pull requests and reproduce incoming vulnerability reports with proof, on a platform that keeps context between runs
Not ideal for
Teams that need a fully free or open-source pentesting tool, organizations that cannot use a US-hosted SaaS and are not ready to negotiate custom data residency or an Enterprise on-prem deployment, teams wanting fixed per-engagement pricing, and anyone without authorization to test the targets
Who it's for
Application and product security engineers, MSSPs, pentesters and bug bounty hunters, and enterprise security teams that run vulnerability disclosure or bug bounty programs
Neo's distinguishing bet is that pentesting, PR review and triage should share one context. Most AI security tools either attack a running app or read code. Neo does both, then remembers roles, routes and past findings so later runs and fix retests build on earlier work. Neo Triage is the most practical new piece: teams drowning in bug bounty and scanner reports get a reproduced verdict with evidence instead of another risk score, and it is free for a limited time on self-serve plans. The tradeoffs are budget and control. Usage draws down a weekly allowance whose consumption varies widely by task, the free plan is a one-time trial, and the controls large companies expect (SSO, BYOK, VPC, on-prem) sit behind Enterprise. Teams evaluating it should start with triage or a scoped staging pentest, check verdicts by hand, and watch credit use before automating.
Who should use it
Product and application security teams that run bug bounty or disclosure programs and need reports reproduced quickly, AppSec engineers who want recurring authenticated pentests and PR reviews that remember prior findings, and MSSPs or independent researchers who want a self-serve agent with per-seat pricing.
Who should skip it
Teams that need a free, open-source, self-run tool (Strix or Shannon fit better), organizations that cannot send data to a US-hosted service and do not want to negotiate custom residency or an Enterprise on-prem deployment, buyers who need fixed per-engagement pricing or a compliance-ready report from a human-reviewed pentest, and anyone without permission to test the targets.
Free
$0
Pay as you go
$200, $400 or $800 per seat
Billed monthly
Enterprise
Custom
Free tier limits: One seat and a one-time usage allowance on standard open-weight models; all workflows included, no top-ups.
Note: Each task draws on the allowance according to the model reasoning and infrastructure it uses. Pay as you go allowances reset every seven days from the subscription date, including on annual billing, and do not roll over; a task pauses when the allowance runs out until a top-up or the reset. Neo Triage is available on every plan and free for a limited time on Free and Pay as you go; Enterprise triage is priced by backlog size.
Available models
Working down a bug bounty and scanner backlog
Triage connects to HackerOne, Bugcrowd, GitHub advisories and scanners, reproduces each report against the real asset, flags duplicates across sources and drafts a reply, so reviewers accept or decline verdicts instead of reproducing each report by hand.
Continuous authenticated pentesting of a staging environment
A recurring pentest signs in as each role, remembers routes and past findings from earlier runs, and replays the original exploit after a fix ships to confirm it holds.
Security review on every pull request
The GitHub App comments inline on risky lines with suggested fixes, can prove a finding against a preview URL, and can block merges above a severity threshold.
Neo vs. Strix
Strix is an Apache-2.0 open-source AI pentesting CLI that runs in Docker with your own model key, plus a paid cloud with continuous testing, PR reviews and autofix pull requests. Neo is a closed hosted platform priced per seat with a usage allowance, and adds bug bounty and scanner report triage, attack-surface discovery and internal-network red teaming alongside pentesting.
Neo vs. Hadrian
Hadrian sells agentic attack-surface management (Atlas) and per-test AI pentests of a single app (Nova) with human-reviewed, compliance-mapped reports. Neo is self-serve with a free start and per-seat plans, and also reviews pull requests and triages incoming vulnerability reports.
Neo vs. Shannon
Shannon is Keygraph's AGPL-3.0 white-box AI pentester that combines source code with testing of the running app and runs locally or in CI. Neo is a managed platform with authenticated multi-role testing, triage, PR review and memory across runs, but it is not open source.
Neo vs. Claude Security
Claude Security is Anthropic's hosted scanner that reasons over source code in connected repositories for Claude Enterprise customers. Neo actively tests running applications and APIs, triages reports from outside sources, and reviews PRs against preview deployments, and it is available without a Claude Enterprise plan.
What is ProjectDiscovery Neo?
Neo is an AI security platform from ProjectDiscovery, the company behind Nuclei, Subfinder and httpx. Specialist agents running in isolated sandboxes pentest web apps and APIs, map attack surface, review pull requests, build threat models, red team internal networks and triage vulnerability reports, and each finding is reproduced before it is reported.
How much does Neo cost?
Free is $0 with one seat and a one-time usage allowance on standard open-weight models. Pay as you go costs $200, $400 or $800 per seat per month (up to five seats), each with a weekly usage allowance (base, 2x or 5x), frontier models and top-ups; annual billing saves 12.5%. Enterprise is custom, with unlimited seats, a credit pool, SSO, BYOK and private deployment.
What is Neo Triage?
Neo Triage, released October 26, 2026, ingests reports from HackerOne, Bugcrowd, GitHub security advisories, a security mailbox and scanners, reproduces each one against your environment in a sandbox, and returns a verdict such as valid, likely duplicate, informative, not applicable or spam, with its own severity and evidence. It is on every plan, free for a limited time on Free and Pay as you go.
Is Neo open source?
No. Neo is a commercial platform. ProjectDiscovery's scanners, such as Nuclei (MIT-licensed), Subfinder, httpx, Naabu and Katana, are open source, and Neo's sandboxes include them pre-installed.
Can Neo be self-hosted?
Partly. On every plan you can connect a Bring Your Own Sandbox on a host you control so commands run from your network, but the control plane stays in ProjectDiscovery's cloud. Enterprise customers can run the entire platform on-prem or in their own VPC, with hosted models or their own provider keys.
How does Neo stay within scope?
A pentest asks you to confirm authorization prechecks and lets you list out-of-scope systems and actions. Every command is checked by a runtime classifier that blocks destructive actions, data sent to unapproved destinations and credential exposure, and teams can add hooks that deny, rewrite or require approval for commands. Every agent action is logged.
Neo vs Strix: what is the difference?
Both run AI agents that actively test applications and validate findings, and Neo and the paid Strix cloud both review pull requests. Strix's core is an Apache-2.0 open-source CLI you run with your own model key. Neo is a closed hosted platform that adds report triage for bug bounty and scanner backlogs, attack-surface discovery and internal red teaming on top of pentesting.

Strix (OmniSecure, Inc.)
Engineering and AppSec teams that want open-source, AI-driven pentesting of their own apps and APIs in the CLI or CI, with an option to move to a managed platform
Freemium
Hadrian Security B.V.
CISO-led security teams at mid-market and enterprise organizations (Hadrian names 300 to 10,000 employees) with a large, changing internet-facing estate across cloud and on-premises, who want validated external exposures instead of scanner noise and pentest evidence for NIS2, DORA, ISO 27001 or SOC 2
PaidKeygraph
Engineering teams with access to both the source code and a staging copy of their web app or API who want open-source, evidence-backed security testing in CI
FreemiumNeo is a hosted platform in which an orchestrator plans each task and dispatches specialist agents (recon, browser, API security, XSS, CVE intelligence, red team, Android and iOS, code review, verification) that run in isolated sandboxes with ProjectDiscovery's own open-source tools pre-installed alongside tools such as SQLMap, Semgrep, Impacket and BloodHound. The same platform covers several jobs. A pentest starts from a target URL, optional OpenAPI or GraphQL schema, out-of-scope list and test credentials; Neo signs in like a real user (including SSO and TOTP MFA), tests each role for injection, access-control, SSRF and business-logic flaws, chains findings, and leaves out anything it cannot reproduce. PR security review installs as a GitHub App that runs Semgrep, TruffleHog and ast-grep on the diff, reasons about the change, can exercise the flagged endpoint against a preview URL, and posts inline comments with suggested fixes and an optional merge-gating check. Triage, released on October 26, 2026, pulls reports from HackerOne, Bugcrowd, GitHub security advisories, a Gmail security inbox, or any scanner with an API into one backlog, reproduces each one against your environment, and returns a verdict (valid, likely duplicate, needs more information, informative, not applicable or spam) with its own severity, evidence and a drafted reply to the reporter; auto-triage can run every 15 minutes to once a day. Projects keep memory of architecture, roles and past findings, so later runs build on earlier ones and confirmed fixes are retested. What sets Neo apart from AI pentesting tools that do only one of these jobs is that pentesting, triage, code review, threat modeling and attack-surface discovery share one context and one issue database. The tradeoffs: usage is metered against an allowance, so long Thorough or Goal-mode runs cost more; the Free plan is a one-time allowance on standard open-weight models; SSO, BYOK, a dedicated VPC and on-prem deployment are Enterprise-only; and Neo itself is a commercial product, not open source, even though the scanners it runs are.
ProjectDiscovery released Neo Triage on October 26, 2026. It pulls reports from scanners, pentesters, bug bounty platforms and security mailboxes into one backlog, reproduces each one in a sandbox against the real asset, and returns a verdict with Neo's own severity, evidence and a drafted reply. It is available on every plan, is free for a limited time on Free and Pay as you go, and has volume pricing based on backlog size on Enterprise.
On August 4, 2026, ProjectDiscovery launched Neo v1 for everyone, out of beta, covering continuous exploitability testing of apps and APIs, attack-surface mapping, code and PR review, internal-network red teaming and backlog triage, with sandboxes in ProjectDiscovery's cloud or inside your own network.
ProjectDiscovery introduced Neo on December 3, 2025 as an AI security engineer in limited release for enterprise security engineering teams, priced on model tokens and infrastructure usage.
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