Our LLM Products

Explore the functionality of our LLM Data Products for fine-tuning and assurance.

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Jumpstart the tuning of your custom LLM

Enterprises can now effortlessly acquire ethically sourced domain-specific data, such as math and finance, through pre-built Instruction Datasets. This tailor-made solution simplifies the data acquisition process, enabling businesses to embark on their LLM journey swiftly and efficiently.

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Create high-quality, domain-specific custom datasets

Refine foundation models to perfection by tailoring them to your specific data, fostering the development of sustainable and successful AI programs. Whether you bring your own experts or rely on our recruitment specialists, we’ll connect you with domain experts worldwide, providing personalized feedback and optimization using RLHF.

With our cutting-edge technology, you can expect top-notch quality, thanks to content deduplication, gibberish text detection, and built-in quality controls.

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Fast-track accurate custom LLM deployment

Quick and cost-effective access to domain-specific data through cutting-edge AI agents via our platform that seamlessly connects with your model.

This technology enables real-time insights, while ensuring strict data privacy requirements are met.

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Catch inaccurate, biased and toxic content

Accurate and nuanced assessments of model accuracy, generalization capability, and robustness conducted with appropriate domain and cultural context.

Assess conversation quality, rank and correct responses, and more!

Use A/B testing to compare two versions of a model in development or compare against a competitor model to ensure optimal performance. Streamline the complex and time-consuming process of evaluating multiple language models.

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Stress test your model

Activate Red Teaming to discover any undesirable behaviors exhibited by your model, enabling swift and secure resolution of any issues.

Our skilled and experienced AI Training Specialist Red Teams systematically and creatively challenge your live model in production, preventing toxicity, provocative hallucinations, and bias.

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Deploy best-in-class custom LLMs

Benchmarking enables enterprises to evaluate the performance of their LLM against established industry benchmarks and standards.

With Benchmarking, you can gain valuable insights into your model’s performance, identify areas for improvement, and ensure that you are meeting industry standards.

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Get certified with our proprietary testing

Certification provides third-party assurance that your models meet industry standards.

By undergoing a rigorous evaluation of the model’s performance against a set of predefined criteria – including measures of accuracy, efficiency, security, and ethics – Certification offers a powerful way for businesses to demonstrate their commitment to maintaining high standards for data performance.

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Real-time issue detection

Detect and address issues that may arise when the model is deployed and being used in the real world, by tracking accuracy, completeness, and latency metrics over time to ensure optimal performance.

Seamlessly maintain brand integrity with our expert red teams to test your live model in production, preventing toxicity, provocative hallucinations, and bias.

LLM case studies

Custom instruction data and prompt-response pairs

CHALLENGE: Our client, a leader in the enterprise LLM marketplace, aimed to build powerful software using LLMs. One challenge was training an LLM to respond helpfully, truthfully, and harmlessly to user queries with varying tasks, text lengths, and conversational styles.

SOLUTION: We set up a communication cycle to improve the client’s initial labeler instructions. Once finalized, we used our RLHF product to provide customized instruction data for fine-tuning their model. Experienced AI Training Specialists, who are native English speakers with creative writing expertise, were quickly mobilized to generate high-quality prompt-response pairs and meet the client’s ambitious timeline.

RESULTS: The client utilized this data to refine their LLM, improving its ability to deliver valuable responses to end users in various scenarios. 

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High-quality data for conversational chatbots

CHALLENGE: A leading global technology company aimed to enhance its versatile chatbot product by addressing key weaknesses. The bot sometimes generated unhelpful and inaccurate responses, and its presentation of reference information had limited utility.

SOLUTION: We quickly implemented a large-scale program to fulfill the client’s need for high-quality model response evaluations. Working closely with them, we followed their guidelines. To date, this program has generated over 3 million evaluations for response accuracy, helpfulness, and reference attribution.

RESULTS: The client streamlined chatbot deployment, leveraging accurate data and enhanced user experience. They continue to fine-tune the model using our evaluation data to improve responses.

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Dialogue summarization models for global conversations

CHALLENGE: Our client wanted tools to efficiently process and summarize large volumes of information from global language spoken dialogues. This required a model that could summarize dialogues, generate comprehensive summaries, retain important information, and work effectively for speakers worldwide.

SOLUTION:  The client needed realistic dialogue samples for English speakers worldwide. To meet this requirement, we collected conversations from AI Training Specialists in the US, UK, India, and the Philippines. We delivered over 200 hours of audio, transcriptions, and summaries, along with 6,000+ SMS conversations and summaries to the client.

RESULT: The client was impressed with the diverse and high-quality dataset. They used it to develop high-performing dialogue summarization models, benefiting client organizations and enhancing operational efficiency.

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Fine-tuning LLMs for personalized shopping assistance

CHALLENGE: Online shoppers often abandon purchases when they can’t find suitable products or evaluate their suitability. Our client, a global e-commerce leader, aims to launch an efficient shopping assistant that can digest their evolving catalog, answer customer questions effectively, and represent their brand.

SOLUTION: The client needed a dataset of realistic product-related Q&A’s, including metadata like category, shopping stage, and reference URLs. Using Appen RLHF and a diverse team of US-based AI Training Specialists, we provided 112k product catalog prompts, responses, and requested metadata.

RESULTS: The client appreciated our linguists’ edits and additions to the guidelines, leading to high-quality prompts and responses. They used the dataset to fine-tune their LLM for product catalog inquiries, achieving significant improvements in performance throughout the shopping journey and aligning the model’s responses with their brand voice.

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Customize the way you work

Our delivery model flexes and scales to fit your support needs and budget.

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Managed Services

End-to-end service, delivering controlled, consistent, and high-quality data with unrivaled speed and scalability—customized to your precise needs.

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Platform Only

Independently create workflows, monitor your data, and ensure quality at every step with our Platform.

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AI Training Specialists

Source a team of validated domain experts from our crowd of 1M+ humans speaking 235+ languages in 170+ countries.

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Combine our Managed Services, Platform, AI Training Specialists, or your own experts for a solution designed just for you.

Consulting Services

Tap into our team of PhD Linguists, in-house generative AI and job design experts.


Recruiting Experts

Dedicated team for connecting you to the people you need to train and test your models.


Our deep learning products

Get the most from your data with our Platform, Crowd, and Expertise.

Scale quickly with high-quality, customized data

Whether you are training a model to work for a very particular use case, or are unable to find sufficient open-source data to train your model, we can help provide the high-quality structured or unstructured data you need to kick off your AI project. Choose from our bespoke Data Collection services or browse our extensive catalog of pre-labeled datasets for a variety of common AI use cases.

Large-scale data on demand

Create one-of-a-kind datasets using our 24/7 on-demand general crowd options tailored to your unique needs. With our smart validators, rest assured that gibberish and duplicate entries are swiftly eliminated, ensuring top-notch data quality. Perfect for large-scale projects that can leverage our mobile application for seamless data collection.

Curate highly-specified datasets for your use case

Curate datasets based on your exact specifications with options ranging from location, equipment used, languages, dialects, participants such as twins or family connections, expertise, education level and many more. Recordings can be moderated or unsupervised.

Easily access data for hard-to-find edge case scenarios

Products and expertise that artificially generate hard-to-find data and edge cases to enhance model coverage and performance.

Get started quickly with off-the-shelf data

Go-to-market faster with a vast collection of over 250 pre-labeled datasets. These off-the-shelf datasets are tailored to your specific requirements, encompassing a wide range of domains such as prompt-response pairs and language datasets. 

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Annotation tools powered by machine learning

Annotate data faster and at scale with machine-learning assisted annotation tools that provide a comprehensive data-labeling solution. Machine learning assistance is built into our industry leading annotation tools to save customers time, effort, and money – delivering high-quality training data and accelerating the ROI on your AI initiatives.

ML-assisted frame-by-frame annotation

Frame-by-frame annotation powered by machine learning assistance that predicts the position of objects and automatically tracks them, reducing contributor fatigue.

Annotation types available: Bounding boxes, cuboids, lines, points, polygons, segmentation, ellipse, classification.

ML-assisted image annotation

Pre-trained image classification models that can help you save time and money by automating data labeling, and only sending low-confidence rows for human labeling.

Pixel masks that are automatically generated and applied to an image for contributor validation, saving time and effort.

Annotation types available: Bounding boxes, cuboids, lines, points, polygons, segmentation, ellipse, classification.

ML-assisted text annotation

Built-in tokenizers and pre-trained quality models such as duplicate detection, coherence detection, language detection, and automatic phonetic transcriptions ensuring the highest accuracy while saving time and money.

Access to Appen’s extensive language expertise, giving support for even the rarest languages such as Bodo, Khasi, Mizo etc., and ability to recruit bi-lingual participants for such rare languages in a short timeframe.

Annotation types available: Classification, Named Entity Recognition, Relationships Transcription, Transliteration, Translation, Ranking, Generation, RLHF, Comparison, Prompt-Response Pairs.

Get more value from your documents

Transform hardcopy and digital documents into a useable data source. From tables to handwriting to multi-page pdfs, use our in-tool object character recognition for faster labeling. Pre-labeling available for bounding boxes and transcriptions for typed text or handwriting.

Annotation types available: Classification, polygons, bounding boxes.


All-in-one audio tooling for clear and crisp audio annotations and transcriptions

Quick, high-quality audio transcripts with acoustic tags in a variety of languages that leverage NLP to improve transcription quality and efficiency. Audio that’s automatically segmented into different speakers, audio snippets, languages, domain and topic classification, and more for faster audio annotation. 

Annotation types available: Classification, Transcription, Segment, Timestamp, Assign Speakers.

Human and ML-assisted sensor annotation

Human and machine intelligence that annotates point cloud frames (3D point cloud and RGB images) with point cloud calibration, cuboid annotation, auto-adjust, and pixel-level annotation.

3D sensor tooling that has a robust suite of features and includes machine learning assistance so you can annotate specific data quickly and accurately, building training data for your unique use cases.

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Robust testing and optimization

Introducing dynamic elements to ensure performance more closely reflects real-world deployment environments.

Global coverage with a crowd of 1M+ contributors

A quickly assembled team that covers hundreds of regions with high-quality evaluators to ensure your AI products work in your target markets. We are the go-to provider of human-in-the-loop services for product and technology teams.

Simulations that deliver fast and efficient results

Real-world environmental simulations based on very unique use cases and niche conditions that ensure your AI systems are properly tested.

Identify bias and toxicity before you deploy

Assurance that your model can account for the different languages, cultural nuances, and diversity that come with servicing global markets.

Create true benchmarks for voice assistants

Our Voice Assistant Benchmark (VAB) initiative is a partnership with top global technology companies for ad hoc TTS voice benchmarking, mean opinion scale (MOS), and MUSHRA ratings. It’s an opportunity to streamline, standardize, and iterate the voice evaluation process, creating a true benchmark and highlighting optimum Voice Assistant standards across devices and brands.

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Our supported data types

Discover and utilize valuable information from diverse data formats to power your large language models and deep learning applications.

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With deep expertise in language processing and experience collecting and annotating millions of documents for industry leaders around the world, we are your trusted partner for document intelligence. Businesses have a wealth of unstructured data in the form of scanned and photographed documents of all kinds. By extracting the insights from this data, they can deliver new innovative experiences for their customers. Our clients can now make any document a usable data source without worrying about specific document formats or templates. With exceptional results of 99% accuracy on diverse documents, our clients are launching new products and expanding into additional markets.

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Harness the power of computer vision with our image annotation capabilities. Whether you need to collect, classify, annotate, or transcribe images, our platform offers an all-in-one solution to ensure the highest level of accuracy and inclusivity for your AI models. With advanced features such as polygons, dots, lines, rotating bounding boxes, and ellipses, and pixel-level semantic segmentation, we provide the tools you need to successfully annotate a wide range of image types with speed and precision.

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Transform your computer vision models with our advanced video annotation capabilities. From object tracking to time stamping, our suite of annotation tools is designed to help your models interpret the world around them with greater accuracy and speed. Our custom-built tools and machine learning assistance allow you to easily collect accurate video annotations at scale, making it easier than ever to create more inclusive and reliable models.

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Our Audio Annotation tool is designed to be twice as fast as traditional tools, making it effortless for you to collect, classify, transcribe, or annotate audio data for your NLP projects. You can segment audio into layers, speakers, and timestamps, which will enhance your Audio Speech Recognition and other audio models. Our custom-built acoustic tagging system enables you to generate high-quality audio transcripts rapidly in a variety of languages, improving transcription quality and efficiency. Our all-in-one audio tooling has been purpose-built to deliver crystal-clear and precise audio annotations and transcriptions to train your models. With Appen’s audio annotation capabilities, you can gain valuable insights from your audio data, enabling you to make data-driven decisions with confidence.

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Our cutting-edge Speed Labeling tool includes built-in multi-language tokenizers to assist our human annotators in delivering fast, precise and high-quality annotations. Target entity extraction and span labeling options make it easy to accelerate contributor annotations while bringing your model outputs into the annotation process. Our linguistic experts can also provide post-editing data generated from your NLP models and evaluate text for training purposes. With Appen’s specialized tools and expertise, you can trust us to deliver high-quality training data to help you build NLP models that truly understand nuanced human speech, no matter the market.

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Integrating multiple datasets from various sources or annotation jobs can be a daunting task without the right tools. Our data annotation platform simplifies the process by allowing you to annotate multiple types of data in a single place. Our enterprise-level Workflows tooling makes combining and automating multi-step annotation jobs a breeze. Leveraging the power of our advanced machine learning capabilities, we can deliver high accuracy for even the most complex multi-modal AI projects. With our platform, you can seamlessly bring together various data sources to drive your AI initiatives forward.

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Mobile Location

High-quality raw mobile location data from 700+ million devices in 200+ countries allows you to perform location analytics and derive actionable business intelligence. Tap into the global data feed or request data customized to a specific region. Our location data is fully compliant with GDPR and CCPA. Stamped with a unique QuadID and intensive in-house quality control, you can ensure that every event we share is authentic and increases the reliability of your mobility analysis.

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Point Cloud

Our point cloud capabilities enable you to accurately annotate several types of point cloud data, including LiDAR, Radar, and other types of scanners/sensors. Our intuitive annotation interface allows for easy annotation of point cloud frames (3D point cloud and RGB images) with cuboids, supporting even the most complex use cases such as autonomous vehicles. With built-in Machine Learning assistance, you can enhance your annotation speed and quality. Our purpose-built 3D sensor tooling is trusted by technology leaders to accurately and efficiently annotate complex data types at scale.

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