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EvalExploding Gradients

Ragas

Evaluation toolkit for RAG and LLM applications.

Category
Eval
Pricing
FREE
Platforms
CLIAPI
Models
BYO key / model
Verified
Jun 7, 2026

Open-source (Apache-2.0) Python framework for evaluating retrieval-augmented generation and LLM apps. Provides reference-free metrics — faithfulness, answer relevancy, context precision/recall — plus knowledge-graph-based synthetic test generation. Integrates with LangChain, LlamaIndex, and CI pipelines.

Capabilities 1

What it actually does — grouped by capability family.

  • LLM evaluation (primary capability)

Pros & cons

  • Faithfulness & relevancy metrics
  • Knowledge-graph synthetic test sets
  • LLM-as-judge scoring
  • Integrates LangChain, LlamaIndex, CI
  • LLM-judge scores add cost/variance
  • Python library, no hosted UI
  • Focused on RAG, narrower scope

Tags

View all Eval
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    DeepEval

    Confident AI

    Pytest-style framework for evaluating LLM apps in CI.

    Open-source (Apache 2.0) framework for evaluating LLM apps the way Pytest tests code — assertions backed by 50+ ready metrics spanning LLM-as-judge, RAG, agents, conversation, and safety. Plugs into LangChain, CrewAI, OpenAI Agents and more. Confident AI is the paid cloud platform that adds test management, dashboards, and observability on top.

    Assertions run in your CI pipeline
    LLM-as-judge adds cost
    • eval
    • open-source
    • llm-as-judge
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    • +1
  • View Promptfoo details
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    LLM eval CLI with rubric scoring and golden sets.

    YAML-driven eval harness. Pair a prompt with a goldset, define rubrics, run across multiple models in CI. Strong for catching prompt regressions before they hit production.

    YAML-driven, version-controllable evals
    CLI-first, less of a hosted UI
    • eval
    • ci
    • rubric
    • open-source
  • View Braintrust details
    EvalFREEMIUM

    Braintrust

    Braintrust

    Hosted eval + tracing platform for LLM apps.

    Production-grade eval orchestration with a dashboard, dataset versioning, and OpenTelemetry tracing. Useful once eval volume outgrows a CI YAML file.

    Eval workflow as the primary interface
    Closed-source SaaS
    • eval
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    • datasets
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  • View LangSmith details
    ObservabilityFREEMIUM

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    LangChain

    LangChain's hosted observability + eval platform.

    Tracing, dataset management, eval orchestration, and prompt playground from the LangChain team. Pairs naturally if LangChain or LangGraph already runs in your stack, but works standalone via SDKs.

    Native LangChain/LangGraph tracing
    Closed source, cloud-only
    • tracing
    • evals
    • datasets
    • langchain