The Platform
The complete AI coding platform for professional developers
From intelligent completions to automated testing and AI code review — Synthax integrates directly into your IDE and CI/CD pipeline so you never have to switch context.
Intelligent Code Completion
Synthax's completion engine understands your entire codebase — not just the current file. It analyzes imports, function signatures, API contracts, and your team's coding patterns to generate accurate, idiomatic completions in under 100ms.
- Full-function and multi-line completions
- Framework-aware suggestions (React, Django, FastAPI, Spring, etc.)
- Docstring and comment generation
- Type inference and annotation suggestions
- Inline refactoring with explanation
Automated Test Generation
Stop writing tests by hand. Synthax analyzes your source code and automatically generates unit tests, integration tests, and edge case scenarios — including negative cases and boundary conditions your team might miss.
- Unit tests with full coverage of execution paths
- Integration test scaffolding for REST and GraphQL APIs
- Edge case and boundary condition detection
- Support for pytest, Jest, JUnit, Go test, and more
- Mocking and fixture generation for external dependencies
AI Code Review
Get actionable code review feedback before every pull request. Synthax scans for security vulnerabilities, performance bottlenecks, code smells, and style inconsistencies — and explains exactly what to fix and why.
- OWASP Top 10 security vulnerability detection
- Performance anti-pattern identification
- Complexity scoring and refactoring suggestions
- Dependency risk and license compliance checks
- GitHub and GitLab PR integration
How it works
Synthax integrates in minutes. No infrastructure to manage, no model to fine-tune manually.
Install the Extension
One-click install from VS Code Marketplace, JetBrains Plugin Repository, or via npm for CLI. Sign in with your Synthax account to activate.
Index Your Repository
Synthax runs a secure, in-memory analysis of your codebase to understand structure, patterns, dependencies, and team conventions.
Write Code Faster
Inline completions appear as you type. Generate tests with a keyboard shortcut. Get code review on every diff before pushing.
Review & Merge
AI code review comments surface directly in your PR. Resolve issues, approve the check, and ship with confidence.
Monitor Usage
Track completion acceptance rates, test coverage improvements, and review issues resolved across your team in the Synthax dashboard.
20+ Programming Languages
Synthax provides language-specific, idiomatic completions — not generic pattern matching — for every major programming language.
Tier 1 — Full Support
Python, JavaScript, TypeScript, Go, Rust — deepest model training, framework awareness, and test generation. Available on all plans.
Tier 2 — Strong Support
Java, Kotlin, Swift, C++, C#, PHP, Ruby, Scala — full completions, inline review, and basic test generation. Available on Team and Enterprise plans.
Tier 3 — Community Models
SQL, GraphQL, HTML/CSS, Bash, Elixir, Clojure — completion and documentation generation. Available on all plans with community-contributed models.
What developers are saying
"The test generation alone has saved our team 6–8 hours per sprint. Synthax generates tests that we would have written ourselves — including the edge cases we probably would have missed."Aisha Okonkwo — Lead Engineer, B2B SaaS Platform
"We use Synthax across four languages: TypeScript, Python, Go, and SQL. The fact that it provides idiomatic suggestions in each — not just generic completions — is what separates it from the alternatives."Takeshi Yamamoto — Principal Engineer, Data Infrastructure
"The PR review integration is the feature I didn't know I needed. Catching OWASP issues before they hit production has already saved us from two incidents in three months."Sofia Andersen — Security-focused Engineer, Fintech
Ready to ship better code, faster?
Start a free 14-day trial on the Developer plan. No credit card required.