OpenAI Playground alternatives

Nearest on its board

1. 24
   MF

   Microsoft Foundry Agent Evaluationazure.microsoft.com
   4.1 APIOpenFree —
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2. 23
   AB

   Amazon Bedrock Prompt Managementaws.amazon.com
   4.1 APIOpenFree —
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3. 22
   P

   PromptToolsprompttools.ai
   4.6 APIOpenFree Free tier
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4. 21
   P

   ProofHoundproofhound.org

   ProofHound automates prompt optimization for LLM classification tasks by analyzing error cases, iterating prompts, validating results, and supporting…

   5.8 APIOpenFree Free tier · from $29/mo
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5. 20
   P

   PromptLayerpromptlayer.com

   PromptLayer combines a prompt registry and visual prompt CMS with LLM evaluations, observability, and agent tracing.

   5.8 APIOpenFree Free tier · from $49/mo
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6. 19
   L

   Laminarlaminar.sh

   Laminar is an open-source, OpenTelemetry-native observability and debugging platform built for AI agents.

   5.8 APIOpenFree Free tier · from $30/mo
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7. 18
   D

   DSPydspy.ai

   DSPy is a Python framework for building AI systems by expressing tasks as structured signatures instead of prompts.

   5.8 APIOpenFree Free tier
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8. 17
   MM

   MLflow Model Registrymlflow.org

   MLflow Model Registry is a centralized model store, API, and UI for managing the lifecycle of machine learning models.

   5.9 APIOpenFree Free tier
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9. 16
   H

   HoneyHivehoneyhive.ai

   HoneyHive is an agent observability platform for observing, evaluating, and improving AI agents in production.

   5.9 APIOpenFree Free tier
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10. 15
    AP

    Arize Phoenixarize.com

    Phoenix helps teams trace, evaluate, debug, and improve AI applications.

    5.9 APIOpenFree Free tier
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11. 14
    T

    TextGradtextgrad.com

    TextGrad is a Python package for building LLM-gradient pipelines that optimize text.

    5.9 APIOpenFree Free tier
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12. 13
    MA

    Maxim AIgetmaxim.ai

    Maxim is an end-to-end evaluation and observability platform for simulating, evaluating, and monitoring AI agents.

    6.0 APIOpenFree Free tier · from $29/mo
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13. 12
    G

    Galileogalileo.ai

    Galileo is an observability, evaluation, and guardrail platform for GenAI and agentic applications.

    6.0 APIOpenFree Free tier · from $100/mo
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14. 11
    C

    ChainForgechainforge.ai

    ChainForge is an open-source visual programming environment for prompt engineering, LLM evaluation and experimentation.

    6.3 APIOpenFree Free tier
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15. 10
    B

    Braintrustbraintrust.dev

    Braintrust is an observability and evaluation platform for instrumenting, understanding and improving AI agents in production.

    6.3 APIOpenFree Free tier · from $249/mo
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16. 9
    L

    LangSmithlangchain.com

    LangSmith is LangChain's framework-agnostic platform for observing, evaluating and deploying AI agents.

    6.7 APIOpenFree Free tier · $39 usage-based
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17. 8
    T

    TruLenstrulens.org

    TruLens evaluates and traces LLM applications and AI agents, helping teams find quality failures and cost issues.

    7.1 APIOpenFree Free tier
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18. 7
    A

    Agentaagenta.ai

    Agenta is a collaborative workspace for building AI agents and automations through chat, with cloud or self-hosted deployment.

    7.3 APIOpenFree Free tier · from $29/mo
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19. 6
    L

    Langfuselangfuse.com

    Langfuse is an open-source AI engineering platform for tracing, prompt management, evaluations, metrics, and iterative improvement of LLM applications and…

    7.4 APIOpenFree Free tier · from $29/mo
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20. 5
    G

    Giskardgiskard.ai

    Giskard tests AI agents for security vulnerabilities, quality failures and compliance risks before and after deployment.

    7.4 APIOpenFree Free tier
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