Fencer vs Cobalt
Fencer and Cobalt take different shapes. Cobalt is a pentest-as-a-service built on a community of human pentesters, now adding AI, and even its new autonomous pentest keeps a human pentester authorizing the engagement. Fencer is a fully autonomous product: it proves exploits and applies the fix (pull requests for code, cloud corrections) with no human in the loop during the test, at published self-serve pricing. Cobalt is the right answer when you need a named human expert to stand behind the report; Fencer is the right answer for a lean software team that wants continuous, on-demand testing that also fixes what it finds.
Lean software teams that want continuous, on-demand, autonomous testing that also fixes what it finds, at published self-serve pricing.
Teams that need a named, vetted human expert to stand behind the pen test report for compliance or the board.
Testing model: a product you run, or a service you schedule?
The biggest difference is shape. One is software you run whenever you want; the other is a scheduled engagement delivered by people.
- A product you run on demand or continuously, with no scheduling
- Fully autonomous, no human in the loop during the test
- A scheduled service delivered by vetted human pentesters
- Even its autonomous pentest keeps a human pentester authorizing the run
Vulnerability remediation: does it fix, or report?
After the findings arrive, a tool either applies the fix or leaves remediation to your team.
- Applies the fix: pull requests for code, cloud misconfigurations corrected via the provider API, then re-tests
- Reports findings and integrates them into Jira and GitHub; remediation stays your team’s work
Speed and availability: on-demand, or wait for a slot?
How fast you can test decides how well coverage keeps pace with deploys. A human service depends on scheduling and tester availability.
- Run a test any time, with no scheduling or tester-availability wait
- Engagements start within about 24 hours to a few business days, with tester assignment
Human sign-off and compliance: whose name is on the report?
For some audits and buyers, a named human expert who stands behind the result is a requirement; this is a genuine Cobalt strength.
- Autonomous testing with a PDF report; a human-led pen test is available for cases that require a named human
- A vetted human expert stands behind every engagement, which many auditors and compliance buyers want
Pricing: published pricing or credits and quotes?
Whether pricing is published, and how predictable it is, tells a lean team whether it can budget without a sales cycle.
- Published pricing: the AI-led pen test is $3,000 one-time or included on the platform plans
- Credit-based, mostly quoted, with budgeting that reviewers describe as hard to predict
Fencer vs Cobalt: feature comparison
| Criterion | Fencer | Cobalt |
|---|---|---|
| Model | A product you run | A human-led service you schedule |
| Autonomy | Fully autonomous, no human gate | Human-led; the autonomous option still needs a human to authorize |
| Fixes the vulnerabilities | Applies fixes: pull requests and cloud corrections | Reports and integrates findings; your team fixes |
| Speed to start | On-demand, any time | About 24 hours to a few business days |
| Human sign-off | Optional human-led pen test available | A vetted human expert on every engagement |
| Pricing | Published, $3,000 or included on platform plans | Credit-based, mostly quoted |
| Built for | Lean software teams | Teams needing human-signed pentests |
Pros and cons of Fencer
Pros
- Fully autonomous, no human authorization gate
- Applies fixes rather than reporting them
- On-demand and continuous, with no scheduling
- Published self-serve pricing
- A human-led pen test is available when a named human is required
Cons
- Autonomous by default, where some buyers want a named human on every test
- No crowdsourced human red-teaming community
- A newer brand with fewer public reviews
Pros and cons of Cobalt
Pros
- Vetted human experts and business-logic depth
- A named human sign-off that auditors trust
- An established brand and a large review base
- Broad engagement types, including red teaming
Cons
- Even its autonomous pentest keeps a human authorization gate
- Reports findings but does not apply fixes
- Scheduled, with tester assignment and coordination overhead
- Credit-based, mostly quoted pricing
When Fencer is the better fit
Fencer is the better fit for a lean software team that wants continuous, on-demand, autonomous testing that also fixes what it finds, at a published price, without scheduling a human engagement.
When Cobalt is the better fit
Cobalt is the better fit for a team that specifically needs a named, vetted human expert to stand behind the pen test report for compliance or board assurance.
Where Fencer fits
Fencer runs autonomous AI penetration tests that prove what is actually exploitable, then fix what they find, opening pull requests for code and correcting cloud misconfigurations through the provider API, and re-testing to confirm. The pen test lives in the same platform that scans and secures the rest of your stack, at published pricing, built to run without a dedicated security engineer.