44-48%. That’s the slice of vulnerabilities Semgrep’s free CLI catches, per independent tests.
The rest? Locked behind a $35/month paywall. And in 2026, with breaches costing companies millions—think Equifax’s $1.4 billion nightmare—that gap feels like leaving your front door cracked open.
Semgrep. It’s not just another scanner. Picture a bloodhound for code, sniffing out SQL injections, XSS nightmares, and deprecated API calls before they bite. The open-source core? Totally free. No account. No limits. Install via pip or brew, fire it up, and you’re hunting bugs in seconds across 30+ languages—Python to Rust, Terraform to Dockerfiles.
But here’s the twist. Semgrep splits into two beasts: OSS CLI for solo-file sleuthing, and Cloud Platform, the enterprise overlord with dataflow tracking across repos. It’s like giving your dog a yard (free) versus a GPS collar that maps the whole neighborhood (paid).
What Semgrep Hands You for Free—No Catch
Unlimited scans. Every repo, every commit, no caps. Thousands of teams run this in production CI/CD pipelines—GitHub Actions, GitLab, Jenkins—without a dime.
The registry? 2,800 community rules, YAML gold for OWASP Top 10 hits: Django SQLi, React XSS, Node.js command injections. Quality varies (some spit false positives like confetti), but for mainstream stacks, it’s rock-solid.
And custom rules—Semgrep’s secret sauce. Whip up YAML patterns in minutes: metavariables grabbing sketchy API calls, taint tracking inside files. Enforce your org’s “no deprecated crypto” policy? Done. Free.
The scanning engine is the same binary that powers the commercial platform. The difference is not in the engine itself but in which analysis modes are enabled.
That’s straight from Semgrep’s docs. Same horsepower under the hood; free tier just idles some gears.
Speed? Median 10 seconds per codebase. Developers won’t curse your pipeline.
The 27% Detection Gap—And Why It Stings
Single-file analysis shines for isolated bugs. But real attacks? They slither across files—tainted inputs flowing from API to database, unchecked.
Free CLI? Stays in its lane. No cross-file flows, no SCA reachability, no secrets detection. Result: 44-48% catch rate.
Cloud? 72-75%. Pro rules (20k+), AI triage sorting false positives, dashboards uniting teams. That’s the stuff security leads dream of.
Look, it’s 2026. AI isn’t hype—it’s the platform shift, like electricity in the 1900s. Semgrep’s AI-powered triage? It learns your codebase, flags true threats, lets devs fix fast. Free tier can’t touch that wonder.
My unique take: This mirrors Git’s evolution. Free core CLI changed version control forever. GitHub? Paid polish—collaboration, CI, secrets. Semgrep’s doing the same for code security. OSS builds the habit; Cloud scales the empire.
Is Semgrep Cloud Worth $35 Per Dev Monthly?
Team plan: $35/contributor. Enterprise? Custom, with SLAs and white-glove onboarding.
For solo devs or tiny teams? Stick free—it’s no cripple. Production-ready, unlimited.
Scaling up? That 27% gap compounds. One missed vuln = breach risk. Plus SCA, secrets, centralized triage—peace of mind at velocity.
Bold prediction: By 2028, AI triage like Semgrep’s will be table stakes. Free tiers evolve, but Cloud’s edge? It’ll pull 90% coverage as models feast on petabytes of vuln data. We’re watching security become proactive, prescient.
Alternatives? CodeQL (free, GitHub-only), SonarQube (OSS community edition, but slower). None match Semgrep’s rule-writing joy or speed.
Wander a bit: I’ve seen teams hack free Semgrep with multi-stage pipelines for pseudo-cross-file. Clever, but brittle. Cloud’s smoothly.
Energy here—Semgrep’s pushing code security into the AI era, where tools don’t just scan; they think.
Short para: Pay if you ship to prod.
Why Does This Matter for DevOps Teams?
Pipelines scream for speed. Semgrep delivers—SARIF output slots into GitHub’s security tab effortlessly.
No login for OSS. Scan monorepos daily. Custom rules enforce culture: “Log all errors,” “No hard-coded secrets.”
Cloud adds: Branch protection, auto-fixes (coming soon?), team dashboards. It’s the full-stack security flywheel.
In a world of SolarWinds-level supply chain hacks, 48% coverage? Brave. 75%? Smart.
And the future? AI shifts scanning from rules to reasoning. Semgrep’s ahead—watch it redefine “secure by default.”
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Frequently Asked Questions
Is Semgrep free to use?
Yes, the OSS CLI is completely free—unlimited scans, no account needed. Install and run.
Semgrep OSS vs Cloud: key differences?
OSS: single-file, 2.8k rules. Cloud: cross-file, 20k Pro rules, AI triage, SCA—$35/month.
Semgrep pricing tiers 2026?
Team: $35/user/month. Enterprise: custom. OSS: $0 forever.
