GateTest vs DeepSource
AI-Native Code Quality in 2026
DeepSource is a solid static analysis tool. GateTest is an AI-native quality platform: 110 modules, generative AI code review using Claude, AI auto-fix PRs that write real code at the Scan + Fix tier ($199) and Forensic Scan ($399), and per-scan pricing with no per-seat subscriptions.
The AI difference
Rules-based static analysis. Detects patterns defined in analyzer rules — useful, but limited to what the rule authors anticipated. Can’t reason about intent, context, or emergent bugs from code interaction.
Claude reads your code with full context — the function, its callers, the data it processes — and reasons about what the code does, not just how it looks. Catches logic bugs, off-by-one errors in financial code, and security issues that emerge from how code components interact.
Feature Comparison
| Feature | GateTest | DeepSource |
|---|---|---|
| Static code analysis | ✓ | ✓ |
| Security vulnerability detection | ✓ | ✓ |
| Multi-language support | ✓ | ✓ |
| AI code review (generative AI, not patterns) | ✓ | ✗ |
| Auto-fix PRs for any issue type | ✓ | ✗ |
| Performance analysis | ✓ | ✗ |
| Accessibility scanning (WCAG 2.2 AAA) | ✓ | ✗ |
| Visual regression testing | ✓ | ✗ |
| Mutation testing | ✓ | ✗ |
| Chaos testing | ✓ | ✗ |
| Prompt / LLM safety scanning | ✓ | ✗ |
| Race condition / TOCTOU detection | ✓ | ✗ |
| N+1 query detection | ✓ | ✗ |
| Pay per scan (not per seat subscription) | ✓ | ✗ |
| 110 modules in one gate | ✓ | ✗ |
Why teams switch from DeepSource
Fixes, not just findings
DeepSource Autofix covers a subset of its own analysis rules. At the Scan + Fix tier ($199) and Forensic Scan ($399), GateTest's AI auto-fix covers everything it finds: security misconfigs, N+1 queries, accessibility violations, code quality issues, TypeScript strictness regressions — any issue GateTest detects, it can write a fix for and open as a PR.
Pay for what you use
DeepSource charges a monthly subscription per seat. A 10-person team might run 5 scans a month or 500 — the bill is the same. GateTest charges per result: $99 for all 110 modules per scan. Scan before releases, scan after major features, scan daily — you control the spend.
Coverage beyond code quality
DeepSource focuses on code quality and security. GateTest adds visual regression (screenshot comparison between deploys), mutation testing (validates your tests actually catch bugs), chaos testing, performance analysis, accessibility audits, and AI safety scanning — dimensions no static analyzer covers.
Faster synchronous results
DeepSource runs asynchronously — you push, wait for the background scan to complete, then check the dashboard. GateTest returns results synchronously within the CI window: commit status posted, PR comment added, full report available before your CI pipeline finishes.
Frequently asked questions
What does GateTest do that DeepSource doesn't?
GateTest's key advantages over DeepSource: AI-powered code review using Claude (DeepSource uses static analysis, not generative AI), AI auto-fix PRs at the Scan + Fix tier ($199) and Forensic Scan ($399) that write actual code changes (DeepSource shows issues, not fixes), pay-per-scan pricing (DeepSource is subscription per-seat), coverage of performance/visual regression/chaos testing/mutation testing (DeepSource is code quality and security only), and prompt/LLM safety scanning for AI apps.
DeepSource has a free tier. Does GateTest?
GateTest charges per scan: $29 quick scan (4 modules), $99 full scan (110 modules). No free tier currently. The key difference: GateTest's $99 scan includes AI code review, performance analysis, accessibility, visual regression, mutation testing, and 60+ other modules that require multi-tool subscriptions to replicate with DeepSource + extras.
Does GateTest's AI fix code like DeepSource's Autofix?
GateTest's Scan + Fix tier ($199) goes further than DeepSource Autofix. DeepSource Autofix generates fixes for a specific subset of analysis issues. GateTest uses Claude to read your entire codebase context and write fixes for any issue it finds — security misconfigurations, logic bugs, N+1 queries, accessibility violations — and opens a pull request with complete, reviewable code. The Forensic Scan tier ($399) adds attack-chain correlation across findings, a board-ready CISO report, and an executive summary report you can hand to a CTO. Mutation testing on your existing tests also ships via the GitHub Action with mutation: true — runs wherever your CI runs.
How do scan speeds compare?
GateTest quick scans (4 modules) complete in under 15 seconds. Full 102-module scans complete in under 60 seconds. DeepSource runs asynchronously in the background and varies widely by repo size. GateTest gives you synchronous results within the CI timeout window — no waiting for background workers.
Does GateTest cover the same languages as DeepSource?
Yes and more. GateTest has dedicated modules for Python, Go, Java, JavaScript, TypeScript, Ruby, PHP, C#, Kotlin, Swift, and Rust — plus the universal checker engine applies security and quality patterns across all languages simultaneously. DeepSource supports Python, Go, JavaScript, TypeScript, Java, and Ruby in its primary analyzers.
Can GateTest replace DeepSource for continuous scanning?
Yes. Install the GateTest GitHub App and every push to your repo triggers a scan automatically — commit status posted, PR comment added, full report available. The Continuous plan ($49/month) enables scans on every push. DeepSource's continuous model requires a subscription; GateTest's per-push scanning through the GitHub App is available on any paid plan.
Find issues. Fix issues. Ship faster.
110 modules and AI-powered review on every paid tier. AI auto-fix PRs at Scan + Fix ($199) and Forensic Scan ($399). One-time payment per scan.
Scan My Repo — From $29One-time payment per scan via Stripe. No subscription, no auto-renew.