Best Free Prompt Engineering Tools of 2025

In Google AI Studio, prompt engineering focuses on crafting and honing the inputs provided to AI models in order to produce the desired results. Through the exploration of various wording and arrangements, developers can enhance prompts to boost the performance of the models, leading to more precise and pertinent responses. This practice is especially crucial when dealing with large language models, as the way a prompt is structured can greatly influence the output. Google AI Studio provides resources to support prompt engineering, simplifying the process for developers to generate effective prompts that deliver top-notch outcomes.

Monitor expenses, usage, and latency for GPT applications seamlessly with just one line of code. Renowned organizations that leverage OpenAI trust our service. We are expanding our support to include Anthropic, Cohere, Google AI, and additional platforms in the near future. Stay informed about your expenses, usage patterns, and latency metrics. With Helicone, you can easily integrate models like GPT-4 to oversee API requests and visualize outcomes effectively. Gain a comprehensive view of your application through a custom-built dashboard specifically designed for generative AI applications. All your requests can be viewed in a single location, where you can filter them by time, users, and specific attributes. Keep an eye on expenditures associated with each model, user, or conversation to make informed decisions. Leverage this information to enhance your API usage and minimize costs. Additionally, cache requests to decrease latency and expenses, while actively monitoring errors in your application and addressing rate limits and reliability issues using Helicone’s robust features. This way, you can optimize performance and ensure that your applications run smoothly.

Introducing PromptPerfect, an innovative tool specifically crafted for enhancing prompts used with large language models (LLMs), large models (LMs), and LMOps. Crafting the ideal prompt can present challenges, yet it is essential for generating exceptional AI-driven content. Fortunately, PromptPerfect is here to assist you! This advanced tool simplifies the process of prompt engineering by automatically refining your prompts for various models, including ChatGPT, GPT-3.5, DALLE, and StableDiffusion. Regardless of whether you are a prompt engineer, a content creator, or a developer in the AI field, PromptPerfect ensures that prompt optimization is straightforward and user-friendly. Equipped with an easy-to-navigate interface and robust features, PromptPerfect empowers users to harness the complete capabilities of LLMs and LMs, consistently producing outstanding results. Embrace the shift from mediocre AI-generated content to the pinnacle of prompt optimization with PromptPerfect, and experience the difference in quality you can achieve!

Introducing the inaugural platform designed specifically for prompt engineers, where you can log OpenAI requests, review usage history, monitor performance, and easily manage your prompt templates. With this tool, you’ll never lose track of that perfect prompt again, ensuring GPT operates seamlessly in production. More than 1,000 engineers have placed their trust in this platform to version their prompts and oversee API utilization effectively. Begin integrating your prompts into production by creating an account on PromptLayer; just click “log in” to get started. Once you’ve logged in, generate an API key and make sure to store it securely. After you’ve executed a few requests, you’ll find them displayed on the PromptLayer dashboard! Additionally, you can leverage PromptLayer alongside LangChain, a widely used Python library that facilitates the development of LLM applications with a suite of useful features like chains, agents, and memory capabilities. Currently, the main method to access PromptLayer is via our Python wrapper library, which you can install effortlessly using pip. This streamlined approach enhances your workflow and maximizes the efficiency of your prompt engineering endeavors.

Create, evaluate, refine, and implement effective prompts for top-tier language models and AI systems to elevate your applications and operational processes. Promptmetheus serves as a comprehensive Integrated Development Environment (IDE) tailored for LLM prompts, enabling the automation of workflows and the enhancement of products and services through the advanced functionalities of GPT and other cutting-edge AI technologies. With the emergence of transformer architecture, state-of-the-art Language Models have achieved comparable performance to humans in specific, focused cognitive tasks. However, to harness their full potential, it's essential to formulate the right inquiries. Promptmetheus offers an all-encompassing toolkit for prompt engineering and incorporates elements such as composability, traceability, and analytics into the prompt creation process, helping you uncover those critical questions while also fostering a deeper understanding of prompt effectiveness.

Klu.ai, a Generative AI Platform, simplifies the design, deployment, and optimization of AI applications. Klu integrates your Large Language Models and incorporates data from diverse sources to give your applications unique context. Klu accelerates the building of applications using language models such as Anthropic Claude (Azure OpenAI), GPT-4 (Google's GPT-4), and over 15 others. It allows rapid prompt/model experiments, data collection and user feedback and model fine tuning while cost-effectively optimising performance. Ship prompt generation, chat experiences and workflows in minutes. Klu offers SDKs for all capabilities and an API-first strategy to enable developer productivity. Klu automatically provides abstractions to common LLM/GenAI usage cases, such as: LLM connectors and vector storage, prompt templates, observability and evaluation/testing tools.

Build and deploy generative AI applications designed specifically for engineers rather than solely for machine learning specialists. Eliminate the hassle of toggling between multiple platforms or dealing with various APIs, allowing you to concentrate on innovation rather than configuration. Utilize an intuitive interface to engineer prompts and collaborate with AI. Leverage parameters to efficiently convert your workbooks into reusable templates. Design workflows that integrate outputs from language models, image processing, and audio models. Establish organizations to oversee workbooks among your colleagues. Share your workbooks either publicly or with specific groups that you set up with your team. Collaborate by commenting on workbooks and easily review and compare them within your team. Create templates tailored for yourself, your team, or the wider developer community, and quickly dive into existing templates to explore what others are creating. This streamlined approach not only enhances productivity but also fosters collaboration and innovation across the board.

Enhance and maintain your prompts using version control techniques. Implement an auto-generated API to access your prompts seamlessly. Conduct comprehensive end-to-end testing of your LLM before deploying any updates to production prompts. Facilitate collaboration between industry experts and engineers on a unified platform. Allow your industry specialists and prompt engineers to experiment and refine their prompts without needing programming expertise. Our testing suite enables you to design and execute an unlimited number of test cases, ensuring the optimal quality of your prompts. Evaluate for hallucinations, potential issues, edge cases, and more. This suite represents the pinnacle of prompt complexity. Utilize Git-like functionalities to oversee your prompts effectively. Establish a repository for each specific project, allowing for the creation of multiple branches to refine your prompts. You can commit changes and evaluate them in an isolated environment, with the option to revert to any previous version effortlessly. With our real-time APIs, a single click can update and deploy your prompt instantly, ensuring that your latest revisions are always live and accessible to users. This streamlined process not only improves efficiency but also enhances the overall reliability of your prompt management.

Enhance your team's prompt engineering capabilities by guaranteeing top-notch outputs from LLMs through automated testing and thorough evaluation. Streamline the creation and organization of your prompts, allowing for easy templating, saving, and structuring of prompt settings. Conduct automated tests and receive detailed results within seconds, which will help you save valuable time and boost your productivity. Organize your prompt settings meticulously, and deploy them instantly for integration into your own software solutions. Design, test, and implement prompts with remarkable speed and efficiency. Empower your entire team and effectively reconcile technical execution with practical applications. With PromptPoint’s intuitive no-code platform, every team member can effortlessly create and evaluate prompt configurations. Adapt with ease in a diverse model landscape by seamlessly interfacing with a multitude of large language models available. This approach not only enhances collaboration but also fosters innovation across your projects.

Ignite your imagination with PromptPal, the premier platform designed for exploring and exchanging top-notch AI prompts. Spark fresh ideas and enhance your efficiency as you tap into the potential of artificial intelligence through PromptPal's extensive collection of over 3,400 complimentary AI prompts. Delve into our impressive library of suggestions and find the inspiration you need to elevate your productivity today. Peruse our vast array of ChatGPT prompts, fueling your motivation and efficiency even further. Additionally, you can monetize your creativity by contributing prompts and showcasing your prompt engineering expertise within the dynamic PromptPal community. This is not just a platform; it's a thriving hub for collaboration and innovation.

Introducing Ape, the pioneering AI prompt engineer, designed with advanced capabilities such as tracing, dataset curation, batch testing, and evaluations. Achieving a remarkable 93% score on the GSM8K benchmark, Ape outperforms both DSPy, which scores 86%, and traditional LLMs, which only reach 70%. It employs real-world data to continually refine prompts and integrates CI/CD to prevent any decline in performance. By incorporating a human-in-the-loop approach featuring scoring and feedback, Ape enhances its effectiveness. Furthermore, the integration with the Weavel SDK allows for automatic logging and incorporation of LLM outputs into your dataset as you interact with your application. This ensures a smooth integration process and promotes ongoing enhancement tailored to your specific needs. In addition to these features, Ape automatically generates evaluation code and utilizes LLMs as impartial evaluators for intricate tasks, which simplifies your assessment workflow and guarantees precise, detailed performance evaluations. With Ape's reliable functionality, your guidance and feedback help it evolve further, as you can contribute scores and suggestions for improvement. Equipped with comprehensive logging, testing, and evaluation tools for LLM applications, Ape stands out as a vital resource for optimizing AI-driven tasks. Its adaptability and continuous learning mechanism make it an invaluable asset in any AI project.

Promptimize AI is a browser extension designed to help users elevate their interactions with AI effortlessly. By entering a prompt and clicking "enhance," users can upgrade their initial submissions into more powerful prompts, which leads to a significant improvement in the quality of AI-generated content. The extension provides various features, including immediate enhancements, dynamic variables for maintaining consistent context, a library for saving favorite prompts, and support for all leading AI platforms such as ChatGPT, Claude, and Gemini. This tool is perfect for anyone who wishes to simplify their prompt creation journey, uphold brand consistency, and enhance their skills in prompt engineering without needing extensive knowledge. With Promptimize, users can avoid the complexity of becoming prompt engineers, allowing the extension to handle the hard work. Customized prompts yield more accurate, engaging, and influential AI outputs. By utilizing this tool, you can streamline your prompt creation process, which not only saves time but also conserves valuable resources, ultimately making your AI interactions more efficient and effective. Embrace the ease of using Promptimize and transform the way you work with AI technology.

Utilize prompts in ChatGPT for various purposes such as SEO, marketing, and copywriting. The AIPRM extension provides a curated collection of prompt templates specifically designed for ChatGPT users. Take advantage of this opportunity to enhance your productivity by using it for free today. Prompt Engineers share their top prompts, allowing experts to gain recognition and drive traffic to their websites. AIPRM serves as your comprehensive toolkit for AI prompts, equipping you with everything necessary to effectively engage ChatGPT. Covering a wide array of topics including SEO, sales strategies, customer support, and even guitar playing, AIPRM ensures you no longer struggle to create the ideal prompts. Let the AIPRM ChatGPT Prompts extension take the hassle out of the process! These prompts not only assist in optimizing your website for better search engine rankings but also aid in developing new product strategies and improving sales and support for your SaaS business. AIPRM is truly the AI prompt manager you have been seeking, and with its resources, your workflow is bound to improve significantly. The time to revolutionize your approach to prompting is now!

Creating stunning images using AI platforms such as MidJourney heavily relies on the effectiveness of the prompts provided. With PromptMakr, you can effortlessly craft and organize a collection of these high-quality prompts, thanks to its user-friendly interactive interface. This tool not only simplifies the process but also enhances your creative potential by allowing for easy modifications and improvements.

LMOps is a stack that allows you to launch production-ready applications for monitoring, model management and more. Portkey is a replacement for OpenAI or any other provider APIs. Portkey allows you to manage engines, parameters and versions. Switch, upgrade, and test models with confidence. View aggregate metrics for your app and users to optimize usage and API costs Protect your user data from malicious attacks and accidental exposure. Receive proactive alerts if things go wrong. Test your models in real-world conditions and deploy the best performers. We have been building apps on top of LLM's APIs for over 2 1/2 years. While building a PoC only took a weekend, bringing it to production and managing it was a hassle! We built Portkey to help you successfully deploy large language models APIs into your applications. We're happy to help you, regardless of whether or not you try Portkey!

Pezzo serves as an open-source platform for LLMOps, specifically designed for developers and their teams. With merely two lines of code, users can effortlessly monitor and troubleshoot AI operations, streamline collaboration and prompt management in a unified location, and swiftly implement updates across various environments. This efficiency allows teams to focus more on innovation rather than operational challenges.

The xAI PromptIDE serves as a comprehensive environment for both prompt engineering and research into interpretability. This tool enhances the process of prompt creation by providing a software development kit (SDK) that supports the implementation of intricate prompting strategies along with detailed analytics that illustrate the outputs generated by the network. We utilize this tool extensively in our ongoing enhancement of Grok. PromptIDE was created to ensure that engineers and researchers in the community have transparent access to Grok-1, the foundational model behind Grok. The IDE is specifically designed to empower users, enabling them to thoroughly investigate the functionalities of our large language models (LLMs) efficiently. Central to the IDE is a Python code editor that, when paired with the innovative SDK, facilitates the use of advanced prompting techniques. While users execute prompts within the IDE, they are presented with valuable analytics, including accurate tokenization, sampling probabilities, alternative tokens, and consolidated attention masks. In addition to its core functionalities, the IDE incorporates several user-friendly features, including an automatic prompt-saving capability that ensures that all work is preserved without manual input. This streamlining of the user experience further enhances productivity and encourages experimentation.

CometLLM serves as a comprehensive platform for recording and visualizing your LLM prompts and chains. By utilizing CometLLM, you can discover effective prompting techniques, enhance your troubleshooting processes, and maintain consistent workflows. It allows you to log not only your prompts and responses but also includes details such as prompt templates, variables, timestamps, duration, and any necessary metadata. The user interface provides the capability to visualize both your prompts and their corresponding responses seamlessly. You can log chain executions with the desired level of detail, and similarly, visualize these executions through the interface. Moreover, when you work with OpenAI chat models, the tool automatically tracks your prompts for you. It also enables you to monitor and analyze user feedback effectively. The UI offers the feature to compare your prompts and chain executions through a diff view. Comet LLM Projects are specifically designed to aid in conducting insightful analyses of your logged prompt engineering processes. Each column in the project corresponds to a specific metadata attribute that has been recorded, meaning the default headers displayed can differ based on the particular project you are working on. Thus, CometLLM not only simplifies prompt management but also enhances your overall analytical capabilities.

Join forces on prompts, assess, and oversee LLM applications with assurance. Agenta stands out as an all-encompassing platform that allows teams to swiftly develop strong LLM applications. You can set up a collaborative playground linked to your code, offering a space for the entire team to innovate and work together. Methodically evaluate various prompts, models, and embeddings prior to launching in a production environment. You can easily share a link to obtain feedback from team members, fostering a culture of collaboration. Agenta is compatible with all frameworks (such as Langchain and Lama Index) and model providers (including OpenAI, Cohere, Huggingface, and self-hosted models). This platform provides insight into your LLM application's expenses, response times, and sequence of operations. While you can construct straightforward LLM applications directly through the user interface, tailored applications require coding in Python. Agenta is designed to be model agnostic, accommodating all model providers and frameworks. Currently, the only restriction is that our SDK is exclusively available in Python, but this allows for extensive customization and flexibility. Moreover, as the field evolves, Agenta is committed to expanding its capabilities further.

Introducing Narrow AI: Eliminating the Need for Prompt Engineering by Engineers Narrow AI seamlessly generates, oversees, and fine-tunes prompts for any AI model, allowing you to launch AI functionalities ten times quicker and at significantly lower costs. Enhance quality while significantly reducing expenses - Slash AI expenditures by 95% using more affordable models - Boost precision with Automated Prompt Optimization techniques - Experience quicker responses through models with reduced latency Evaluate new models in mere minutes rather than weeks - Effortlessly assess prompt effectiveness across various LLMs - Obtain benchmarks for cost and latency for each distinct model - Implement the best-suited model tailored to your specific use case Deliver LLM functionalities ten times faster - Automatically craft prompts at an expert level - Adjust prompts to accommodate new models as they become available - Fine-tune prompts for optimal quality, cost efficiency, and speed while ensuring a smooth integration process for your applications.

AI engineering can be transparent rather than opaque. With a suite of tools for tracing, assessment, prompt management, and more, HoneyHive emerges as a comprehensive platform for AI observability and evaluation, aimed at helping teams create dependable generative AI applications. This platform equips users with resources for model evaluation, testing, and monitoring, promoting effective collaboration among engineers, product managers, and domain specialists. By measuring quality across extensive test suites, teams can pinpoint enhancements and regressions throughout the development process. Furthermore, it allows for the tracking of usage, feedback, and quality on a large scale, which aids in swiftly identifying problems and fostering ongoing improvements. HoneyHive is designed to seamlessly integrate with various model providers and frameworks, offering the necessary flexibility and scalability to accommodate a wide range of organizational requirements. This makes it an ideal solution for teams focused on maintaining the quality and performance of their AI agents, delivering a holistic platform for evaluation, monitoring, and prompt management, ultimately enhancing the overall effectiveness of AI initiatives. As organizations increasingly rely on AI, tools like HoneyHive become essential for ensuring robust performance and reliability.

DagsHub serves as a collaborative platform tailored for data scientists and machine learning practitioners to effectively oversee and optimize their projects. By merging code, datasets, experiments, and models within a cohesive workspace, it promotes enhanced project management and teamwork among users. Its standout features comprise dataset oversight, experiment tracking, a model registry, and the lineage of both data and models, all offered through an intuitive user interface. Furthermore, DagsHub allows for smooth integration with widely-used MLOps tools, which enables users to incorporate their established workflows seamlessly. By acting as a centralized repository for all project elements, DagsHub fosters greater transparency, reproducibility, and efficiency throughout the machine learning development lifecycle. This platform is particularly beneficial for AI and ML developers who need to manage and collaborate on various aspects of their projects, including data, models, and experiments, alongside their coding efforts. Notably, DagsHub is specifically designed to handle unstructured data types, such as text, images, audio, medical imaging, and binary files, making it a versatile tool for diverse applications. In summary, DagsHub is an all-encompassing solution that not only simplifies the management of projects but also enhances collaboration among team members working across different domains.

Aim serves as a comprehensive tool for logging all AI-related metadata, including experiments and prompts, while offering a user interface for comparison and observation, as well as a software development kit for programmatic queries. This open-source, self-hosted solution is built to manage hundreds of thousands of tracked metadata sequences efficiently. The two primary applications of AI metadata are in the realms of experiment tracking and prompt engineering. Additionally, Aim boasts an attractive and high-performance interface that facilitates the exploration and comparison of various training runs and prompt sessions, enhancing the overall user experience in AI development. Overall, Aim stands out as a vital resource for those engaged in advanced AI projects.

The AI Tools Kit serves as a comprehensive platform for productivity, encompassing AI, writing, SEO, social media, and marketing resources all in one place. It offers a variety of FREE tools, including an AI Art Generator, Prompt Engineering Tool, AI Undetectable Rewriter, Keyword Research Tool (with CPC, Search Volume, and Difficulty metrics), AI Image Optimizer, and a Pro Text to Speech feature. Additionally, users can look forward to the upcoming launch of ChatGPT4, alongside tools for removing image backgrounds, generating Instagram hashtags, enhancing image quality, and discovering trending YouTube tags. The kit also includes a URL shortener, backlink maker, QR code generator, and keyword providers tailored for specific search engines, as well as an SEO report generator for websites, a free plagiarism checker, and a password strength checker. Furthermore, it offers a speech-to-text converter, an online PDF editor, an image text extractor, and an AI-based content generator, along with over 50 other amazing tools designed to enhance productivity and creativity. This diverse array of features makes the AI Tools Kit an invaluable resource for anyone looking to streamline their digital tasks.

SpellPrints allows creators to create and monetize generative AI-powered apps. The platform provides access to over 1,000 AI models and UI elements, as well as payments and prompt chaining interfaces. This makes it easy for prompt engineers turn their knowledge into a business. The creator can transform prompts or AI models into monetizable apps that can be distributed via UI and API. We are creating both a platform for developers and a marketplace where users can find and use these apps.