v2.0 is now live

    Evaluate LLMs with
    Precision, Not Guesswork

    Run automated benchmarks, compare outputs, and ship better AI systems faster. The industry standard for LLM evaluation and observability.

    eval_job_#8429.json
    RUNNING
    00:42:12
    GP
    GPT-4o
    0.92

    The provided summary accurately captures the core themes of the document while maintaining a concise and professional tone...

    CL
    Claude 3.5 Sonnet
    0.88

    This summary is technically correct but misses some of the nuanced details regarding the secondary stakeholders mentioned in section 4...

    Avg Latency
    1.2s
    Token Usage
    4.2k
    Pass Rate
    98.2%

    The AI Development Bottleneck

    Building with LLMs is easy. Building reliable, production-grade AI systems is hard. Most teams are flying blind.

    Opaque Comparisons

    Manually comparing outputs across models is slow, subjective, and impossible to scale.

    Inconsistent Quality

    Without standardized evals, you're shipping AI features based on vibes, not data.

    Slow Iteration

    Waiting for manual QA cycles bottlenecks your development and delays production.

    Hidden Costs

    Latency and token usage spikes go unnoticed until you receive the monthly bill.

    Everything You Need to Ship Better AI

    A complete suite of tools built for AI engineers who care about quality and performance.

    Automated Evaluation

    Advanced LLM-as-judge scoring to quantify quality and alignment instantly.

    Unified Model Runner

    Call multiple providers (OpenAI, Anthropic, Gemini) via one unified API.

    Dataset-Based Testing

    Upload CSV/JSON datasets and evaluate model performance at scale.

    Evaluation Jobs

    Run batch evaluations with progress tracking and detailed reports.

    Metrics Dashboard

    Track latency, tokens, scores, and pass rate across all your models.

    Secure & Extensible

    API key management with custom evaluation rules for your domain.

    The Evaluation Pipeline

    From raw data to actionable insights in four simple steps.

    1

    Upload Dataset

    Import your test cases from CSV, JSON, or via API.

    2

    Generate Outputs

    Run your prompts across multiple models simultaneously.

    3

    Run Evaluation

    Automated scoring using our proprietary LLM-as-judge engine.

    4

    Analyze Results

    Identify regressions and performance bottlenecks.

    User
    Syntropy Engine
    Dashboard
    The Ecosystem

    A Unified Platform for AI Quality

    Syntropylabs connects your development workflow to production-grade evaluation.

    User Interface

    Seamlessly integrate via our SDK or web dashboard. Upload datasets and define your evaluation criteria in minutes.

    • Python & Node SDKs
    • CSV/JSON Imports
    • Custom Metadata Support

    Syntropy Engine

    The core orchestration layer that runs your prompts across models and applies LLM-as-judge scoring at scale.

    • Parallel Model Execution
    • LLM-as-Judge Scoring
    • Auto-retries & Rate Limiting

    Dashboard

    Deep analytics and visualization of your model performance. Identify regressions and track quality over time.

    • Regression Tracking
    • Latency Analytics
    • Team Collaboration

    See it in Action

    Compare models side-by-side and see how our evaluation engine scores them in real-time.

    Input Prompt
    G
    GPT-4o

    Click "Run Evaluation" to see outputs...

    C
    Claude 3.5 Sonnet

    Click "Run Evaluation" to see outputs...

    Developer First

    Built for Engineers,
    Not Marketing Fluff

    Integrate evaluation directly into your CI/CD pipeline. Our OpenAI-compatible APIs make it easy to swap providers and track performance without changing your codebase.

    • OpenAI-compatible proxy layer
    • SDKs for Python, Node.js, and Go
    • Webhooks for evaluation job completion
    • CLI for local evaluation runs
    evaluate.sh
    POST /api/v1/evaluate
    {
      "dataset_id": "ds_8429",
      "models": ["gpt-4o", "claude-3.5-sonnet"],
      "evaluators": ["rouge", "llm-as-judge"],
      "config": {
        "temperature": 0.7,
        "max_tokens": 1000
      }
    }

    Trusted by AI Teams

    From startups to enterprise, engineering teams rely on Syntropylabs to build reliable AI.

    The LLM-as-judge feature reduced our hallucination rate by 40% in just two weeks of testing.

    NP
    Neelam Pawar
    AI Researcher

    Finally, a tool that treats LLM evaluation as an engineering discipline, not a guessing game.

    A
    Animesh
    Fullstack Developer

    Syntropylabs replaced our entire manual eval pipeline

    HY
    Happy Yadav
    ML Engineer

    Simple, Transparent Pricing

    Scale your evaluation pipeline as your product grows.

    Enterprise

    Custom

    For organizations with custom security and scale needs.

    • Custom model adapters
    • On-premise deployment
    • Dedicated account manager
    • SLA & security audits
    • SSO / SAML

    Learn from the experts

    Read our latest articles on LLM evaluation, prompt engineering, and AI infrastructure from the Syntropylabs team.

    Start building
    reliable AI today

    Join 2,000+ engineering teams who use Syntropylabs to ship better AI systems faster.