Best Prompt Engineering Tools for OpenAI

Find and compare the best Prompt Engineering tools for OpenAI in 2025

Use the comparison tool below to compare the top Prompt Engineering tools for OpenAI on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    Helicone Reviews

    Helicone

    Helicone

    $1 per 10,000 requests
    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.
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    PromptLayer Reviews

    PromptLayer

    PromptLayer

    Free
    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.
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    Klu Reviews
    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.
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    LastMile AI Reviews

    LastMile AI

    LastMile AI

    $50 per month
    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.
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    Agenta Reviews

    Agenta

    Agenta

    Free
    Collaborate effectively on prompts and assess LLM applications with assurance using Agenta, a versatile platform that empowers teams to swiftly develop powerful LLM applications. Build an interactive playground linked to your code, allowing the entire team to engage in experimentation and collaboration seamlessly. Methodically evaluate various prompts, models, and embeddings prior to launching into production. Share a link to collect valuable human feedback from team members, fostering a collaborative environment. Agenta is compatible with all frameworks, such as Langchain and Lama Index, as well as model providers, including OpenAI, Cohere, Huggingface, and self-hosted models. Additionally, the platform offers insights into the costs, latency, and chain of calls associated with your LLM application. Users can create straightforward LLM apps right from the user interface, but for those seeking to develop more tailored applications, coding in Python is necessary. Agenta stands out as a model-agnostic tool that integrates with a wide variety of model providers and frameworks, though it currently only supports an SDK in Python. This flexibility ensures that teams can adapt Agenta to their specific needs while maintaining a high level of functionality.
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    Promptimize Reviews

    Promptimize

    Promptimize

    $12 per month
    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.
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    Portkey Reviews

    Portkey

    Portkey.ai

    $49 per month
    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!
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    Parea Reviews
    Parea is a prompt engineering platform designed to allow users to experiment with various prompt iterations, assess and contrast these prompts through multiple testing scenarios, and streamline the optimization process with a single click, in addition to offering sharing capabilities and more. Enhance your AI development process by leveraging key functionalities that enable you to discover and pinpoint the most effective prompts for your specific production needs. The platform facilitates side-by-side comparisons of prompts across different test cases, complete with evaluations, and allows for CSV imports of test cases, along with the creation of custom evaluation metrics. By automating the optimization of prompts and templates, Parea improves the outcomes of large language models, while also providing users the ability to view and manage all prompt versions, including the creation of OpenAI functions. Gain programmatic access to your prompts, which includes comprehensive observability and analytics features, helping you determine the costs, latency, and overall effectiveness of each prompt. Embark on the journey to refine your prompt engineering workflow with Parea today, as it empowers developers to significantly enhance the performance of their LLM applications through thorough testing and effective version control, ultimately fostering innovation in AI solutions.
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    AI Keytalk Reviews
    Effective prompt engineering is crucial for achieving the desired results when utilizing AI tools. With AI Keytalk, you gain access to an extensive collection of industry-specific prompts. By leveraging insights gathered from over 88,000 reviews of movies and TV shows, you can craft the ideal concept for your upcoming project. AI Keytalk prompts serve as a comprehensive resource for planning your next film or television series. From the outset, you can collaborate seamlessly, benefiting from a thorough production plan that includes movie references, suggestions for cast and crew, and much more. Furthermore, these prompts can help you develop compelling storylines and vibrant characters. You can explore a vast array of prompts tailored for plot progression, character development, writing techniques, and climaxes, all sourced from existing literature and comics. Additionally, AI Keytalk assists in formulating the perfect prompts for specifying the artistic direction of your movie poster, scene creation, character designs, and beyond. By integrating these prompts with generative AI tools, you can enhance collaboration and streamline the creative process, ensuring a successful outcome for your project. Ultimately, the right prompts can transform your ideas into a captivating visual narrative.
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    Entry Point AI Reviews

    Entry Point AI

    Entry Point AI

    $49 per month
    Entry Point AI serves as a cutting-edge platform for optimizing both proprietary and open-source language models. It allows users to manage prompts, fine-tune models, and evaluate their performance all from a single interface. Once you hit the ceiling of what prompt engineering can achieve, transitioning to model fine-tuning becomes essential, and our platform simplifies this process. Rather than instructing a model on how to act, fine-tuning teaches it desired behaviors. This process works in tandem with prompt engineering and retrieval-augmented generation (RAG), enabling users to fully harness the capabilities of AI models. Through fine-tuning, you can enhance the quality of your prompts significantly. Consider it an advanced version of few-shot learning where key examples are integrated directly into the model. For more straightforward tasks, you have the option to train a lighter model that can match or exceed the performance of a more complex one, leading to reduced latency and cost. Additionally, you can configure your model to avoid certain responses for safety reasons, which helps safeguard your brand and ensures proper formatting. By incorporating examples into your dataset, you can also address edge cases and guide the behavior of the model, ensuring it meets your specific requirements effectively. This comprehensive approach ensures that you not only optimize performance but also maintain control over the model's responses.
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    Comet LLM Reviews

    Comet LLM

    Comet LLM

    Free
    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.
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    Maxim Reviews

    Maxim

    Maxim

    $29 per month
    Maxim is a enterprise-grade stack that enables AI teams to build applications with speed, reliability, and quality. Bring the best practices from traditional software development to your non-deterministic AI work flows. Playground for your rapid engineering needs. Iterate quickly and systematically with your team. Organise and version prompts away from the codebase. Test, iterate and deploy prompts with no code changes. Connect to your data, RAG Pipelines, and prompt tools. Chain prompts, other components and workflows together to create and test workflows. Unified framework for machine- and human-evaluation. Quantify improvements and regressions to deploy with confidence. Visualize the evaluation of large test suites and multiple versions. Simplify and scale human assessment pipelines. Integrate seamlessly into your CI/CD workflows. Monitor AI system usage in real-time and optimize it with speed.
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    HoneyHive Reviews
    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.
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    Velocity AI Reviews

    Velocity AI

    Totem Interactive

    Velocity is an innovative platform that leverages artificial intelligence to significantly improve the quality of content generated by transforming simple instructions into dynamic and contextually detailed prompts. This advanced tool simplifies the prompt engineering process, allowing users to effortlessly create more intelligent prompts. With seamless integration into current workflows, Velocity empowers users to enhance their AI interactions while minimizing the need for extensive manual intervention. Featuring a user-friendly interface, the platform offers convenient login options for those who are registered. Moreover, Velocity actively engages with its community through various social media channels, sharing updates and fostering connections. By exploring the limitless opportunities available, users can elevate their creative endeavors with ease. Enhance your productivity with top-tier prompts designed specifically for professional applications, enabling you to simplify research tasks, brainstorm innovative ideas, or craft lesson plans with both accuracy and flair. Through Velocity, the potential for creativity and efficiency in your projects is boundless.
  • 15
    Haystack Reviews
    Leverage cutting-edge NLP advancements by utilizing Haystack's pipeline architecture on your own datasets. You can create robust solutions for semantic search, question answering, summarization, and document ranking, catering to a diverse array of NLP needs. Assess various components and refine models for optimal performance. Interact with your data in natural language, receiving detailed answers from your documents through advanced QA models integrated within Haystack pipelines. Conduct semantic searches that prioritize meaning over mere keyword matching, enabling a more intuitive retrieval of information. Explore and evaluate the latest pre-trained transformer models, including OpenAI's GPT-3, BERT, RoBERTa, and DPR, among others. Develop semantic search and question-answering systems that are capable of scaling to accommodate millions of documents effortlessly. The framework provides essential components for the entire product development lifecycle, such as file conversion tools, indexing capabilities, model training resources, annotation tools, domain adaptation features, and a REST API for seamless integration. This comprehensive approach ensures that you can meet various user demands and enhance the overall efficiency of your NLP applications.
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    PromptHub Reviews
    Streamline your prompt testing, collaboration, versioning, and deployment all in one location with PromptHub. Eliminate the hassle of constant copy and pasting by leveraging variables for easier prompt creation. Bid farewell to cumbersome spreadsheets and effortlessly compare different outputs side-by-side while refining your prompts. Scale your testing with batch processing to effectively manage your datasets and prompts. Ensure the consistency of your prompts by testing across various models, variables, and parameters. Simultaneously stream two conversations and experiment with different models, system messages, or chat templates to find the best fit. You can commit prompts, create branches, and collaborate without any friction. Our system detects changes to prompts, allowing you to concentrate on analyzing outputs. Facilitate team reviews of changes, approve new versions, and keep everyone aligned. Additionally, keep track of requests, associated costs, and latency with ease. PromptHub provides a comprehensive solution for testing, versioning, and collaborating on prompts within your team, thanks to its GitHub-style versioning that simplifies the iterative process and centralizes your work. With the ability to manage everything in one place, your team can work more efficiently and effectively than ever before.
  • 17
    Hamming Reviews
    Automated voice testing, monitoring and more. Test your AI voice agent with 1000s of simulated users within minutes. It's hard to get AI voice agents right. LLM outputs can be affected by a small change in the prompts, function calls or model providers. We are the only platform that can support you from development through to production. Hamming allows you to store, manage, update and sync your prompts with voice infra provider. This is 1000x faster than testing voice agents manually. Use our prompt playground for testing LLM outputs against a dataset of inputs. Our LLM judges quality of generated outputs. Save 80% on manual prompt engineering. Monitor your app in more than one way. We actively track, score and flag cases where you need to pay attention. Convert calls and traces to test cases, and add them to the golden dataset.
  • 18
    Mirascope Reviews
    Mirascope is an innovative open-source library designed on Pydantic 2.0, aimed at providing a clean and highly extensible experience for prompt management and the development of applications utilizing LLMs. This robust library is both powerful and user-friendly, streamlining interactions with LLMs through a cohesive interface that is compatible with a range of providers such as OpenAI, Anthropic, Mistral, Gemini, Groq, Cohere, LiteLLM, Azure AI, Vertex AI, and Bedrock. Whether your focus is on generating text, extracting structured data, or building sophisticated AI-driven agent systems, Mirascope equips you with essential tools to enhance your development workflow and create impactful, resilient applications. Additionally, Mirascope features response models that enable you to effectively structure and validate output from LLMs, ensuring that the responses meet specific formatting requirements or include necessary fields. This capability not only enhances the reliability of the output but also contributes to the overall quality and precision of the application you are developing.
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    Literal AI Reviews
    Literal AI is a collaborative platform crafted to support engineering and product teams in the creation of production-ready Large Language Model (LLM) applications. It features an array of tools focused on observability, evaluation, and analytics, which allows for efficient monitoring, optimization, and integration of different prompt versions. Among its noteworthy functionalities are multimodal logging, which incorporates vision, audio, and video, as well as prompt management that includes versioning and A/B testing features. Additionally, it offers a prompt playground that allows users to experiment with various LLM providers and configurations. Literal AI is designed to integrate effortlessly with a variety of LLM providers and AI frameworks, including OpenAI, LangChain, and LlamaIndex, and comes equipped with SDKs in both Python and TypeScript for straightforward code instrumentation. The platform further facilitates the development of experiments against datasets, promoting ongoing enhancements and minimizing the risk of regressions in LLM applications. With these capabilities, teams can not only streamline their workflows but also foster innovation and ensure high-quality outputs in their projects.
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