Best Freeplay Alternatives in 2025
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Test, compare & refine prompts across 50+ LLMs instantly—no API keys or sign-ups. Enforce JSON schemas, run tests, and collaborate. Build better AI faster with LangFast.
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PromptTools is an open-source platform that helps developers build, monitor, and improve LLM applications through experimentation, evaluation, and feedback.
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Evaligo: Your all-in-one AI dev platform. Build, test & monitor production prompts to ship reliable AI features at scale. Prevent costly regressions.
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Manage your prompts, evaluate your chains, quickly build production-grade applications with Large Language Models.
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We're in Public Preview now! Teammate Lang is all-in-one solution for LLM App developers and operations. No-code editor, Semantic Cache, Prompt version management, LLM data platform, A/B testing, QA, Playground with 20+ models including GPT, PaLM, Llama, Cohere.
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Optimix revolutionizes the way Large Language Models are utilized by offering a dynamic, efficient, and user-centric approach.
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Promptech is the AI teamspace with prompt engineering capabilities to streamline your workflows, empowering users to leverage diverse Large Language Models (LLMs) effectively.
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Lumora is a cutting-edge tool for prompt optimization and management. It simplifies prompt creation and refinement, boosting AI performance and project outcomes with an intuitive interface that enhances team collaboration and efficiency.
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Adaline transforms the way teams develop, deploy, and maintain LLM-based solutions.
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Enhance Generative AI capabilities with PromptLeo - a user-friendly prompt engineering platform. Boost team collaboration, optimize prompts, and explore monetization. Join the AI revolution today!
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Build, manage, and scale production-ready AI workflows in minutes, not months. Get complete observability, intelligent routing, and cost optimization for all your AI integrations.
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Launch AI products faster with no-code LLM evaluations. Compare 180+ models, craft prompts, and test confidently.
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Struggling to ship reliable LLM apps? Parea AI helps AI teams evaluate, debug, & monitor your AI systems from dev to production. Ship with confidence.
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Unlock the full potential of LLM Spark, a powerful AI application that simplifies building AI apps. Test, compare, and deploy with ease.
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Debug prompts, run tests, and observe what’s happening in production.Speed up your AI development workflow with Langtail.
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SysPrompt is a comprehensive platform designed to simplify the management, testing, and optimization of prompts for Large Language Models (LLMs). It's a collaborative environment where teams can work together in real time, track prompt versions, run evaluations, and test across different LLM models—all in one place.
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Stop scattering LLM prompts! PromptShuttle helps you manage, test, and monitor prompts outside your code. Unify models & collaborate seamlessly.
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Literal AI: Observability & Evaluation for RAG & LLMs. Debug, monitor, optimize performance & ensure production-ready AI apps.
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Braintrust: The end-to-end platform to develop, test & monitor reliable AI applications. Get predictable, high-quality LLM results.
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LLime is a powerful software with customizable AI assistants for every department. Boost productivity with simple setup, secure data, and custom models.
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Out of Box - Analytics, Debugging, A/B Testing, Prompt Management & Evaluation so you can stop wasting dev-resources building internal tools for AI.
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Streamline LLM prompt engineering. PromptLayer offers management, evaluation, & observability in one platform. Build better AI, faster.
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Discover a hub to unleash your creativity with the latest language models and collaborate on GPT-3 tools. Experience efficiency with folders and team support in this all-in-one platform.
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The premier platform for crafting, testing, and deploying tasks and APIs powered by Large Language Models. Elevate your AI-driven solutions today.
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ConsoleX is a unified LLM playground that incorporates AI chat interfaces, LLM API playground, and batch evaluation, supporting all mainstream LLMs and debugging function callings and many enhanced features than the official playgrounds.
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Tired of A/B tests, checking prices and having to go through extra effor to know which LM is best for your task? glideprompt writes your system prompt, and tests it on popular models (Llama, Mistral, OpenAI, Claude, Gemini) so you can make better decisions.
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Turn your LLM app prototype into a product matching your quality standards. Test, evaluate, guardrail and improve your LLM app.
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revolutionize your language model development with our structured prompt engineering platform. Experience streamlined prompt design, precise query testing, and efficient collaboration tools. Elevate your LLM projects today!
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PromptBook is the ultimate notebook for prompt engineering with functions like documenting prompts, sharing notes, running prompts, and enhancing workflow and productivity, suitable for various users.
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LazyLLM: Low-code for multi-agent LLM apps. Build, iterate & deploy complex AI solutions fast, from prototype to production. Focus on algorithms, not engineering.