Best AI Fine-Tuning Platforms with a Free Trial of 2025

Vertex AI's AI Fine-Tuning feature empowers organizations to customize pre-existing models to meet their unique needs by adjusting model parameters or retraining them with tailored datasets. This customization journey enhances the models' accuracy, ensuring that AI solutions yield optimal outcomes in practical applications. By leveraging this capability, companies can utilize cutting-edge models without the burden of developing them from the ground up. New users are welcomed with $300 in complimentary credits, providing them with the chance to explore fine-tuning methods and elevate their model's performance using their own data. As organizations optimize their AI models, they can attain greater levels of personalization and accuracy, significantly improving the impact of their solutions.

LM-Kit.NET empowers .NET developers to enhance large language models using various parameters such as LoraAlpha, LoraRank, AdamAlpha, and AdamBeta1. It integrates efficient optimization techniques and dynamic sample batching to achieve quick convergence. The tool automates quantization, allowing models to be compressed into lower-precision formats, which accelerates inference on devices with limited resources while maintaining accuracy. Additionally, it facilitates the effortless merging of LoRA adapters, enabling the incorporation of new skills in just minutes, avoiding the need for complete retraining. With straightforward APIs, comprehensive guides, and support for on-device processing, LM-Kit.NET ensures a secure and user-friendly optimization process within your existing code framework.

StackAI is an enterprise AI automation platform that allows organizations to build end-to-end internal tools and processes with AI agents. It ensures every workflow is secure, compliant, and governed, so teams can automate complex processes without heavy engineering. With a visual workflow builder and multi-agent orchestration, StackAI enables full automation from knowledge retrieval to approvals and reporting. Enterprise data sources like SharePoint, Confluence, Notion, Google Drive, and internal databases can be connected with versioning, citations, and access controls to protect sensitive information. AI agents can be deployed as chat assistants, advanced forms, or APIs integrated into Slack, Teams, Salesforce, HubSpot, ServiceNow, or custom apps. Security is built in with SSO (Okta, Azure AD, Google), RBAC, audit logs, PII masking, and data residency. Analytics and cost governance let teams track performance, while evaluations and guardrails ensure reliability before production. StackAI also offers model flexibility, routing tasks across OpenAI, Anthropic, Google, or local LLMs with fine-grained controls for accuracy. A template library accelerates adoption with ready-to-use workflows like Contract Analyzer, Support Desk AI Assistant, RFP Response Builder, and Investment Memo Generator. By consolidating fragmented processes into secure, AI-powered workflows, StackAI reduces manual work, speeds decision-making, and empowers teams to build trusted automation at scale.

IntelliWP is a sophisticated AI assistant designed specifically for WordPress sites, turning your content into an intelligent, self-updating agent capable of delivering accurate, context-aware responses in real time. Built on a powerful combination of Retrieval-Augmented Generation (RAG) and fine-tuning architectures, it comprehends your entire content ecosystem to provide expert-level, precise answers tailored to your industry’s language. The plugin integrates seamlessly with WordPress, requires no extensive technical knowledge to set up, and supports multilingual content, enhancing accessibility for global audiences. Beyond simple chat interfaces, IntelliWP offers features such as customizable branded chat UIs, advanced semantic search, and real-time vector search to deepen user engagement. Business owners can monitor performance and status from an intuitive dashboard, and optional professional services offer tailored training, content curation, and UI customization. IntelliWP enables companies to automate customer support, improve conversion rates, and turn static website content into dynamic conversational intelligence. Its flexibility allows deployment not only on WordPress but also on other websites and mobile apps. The result is an AI-driven, personalized user experience that strengthens customer relationships.

At Kili Technology, we believe the foundation of better AI is excellent data. Kili Technology's complete training data platform empowers all businesses to transform unstructured data into high quality data to train their AI and deliver successful AI projects. By using Kili Technology to build training datasets, teams will improve their productivity, accelerate go-to-production cycles of their AI projects and deliver quality AI.

Amazon SageMaker is a comprehensive machine learning platform that integrates powerful tools for model building, training, and deployment in one cohesive environment. It combines data processing, AI model development, and collaboration features, allowing teams to streamline the development of custom AI applications. With SageMaker, users can easily access data stored across Amazon S3 data lakes and Amazon Redshift data warehouses, facilitating faster insights and AI model development. It also supports generative AI use cases, enabling users to develop and scale applications with cutting-edge AI technologies. The platform’s governance and security features ensure that data and models are handled with precision and compliance throughout the entire ML lifecycle. Furthermore, SageMaker provides a unified development studio for real-time collaboration, speeding up data discovery and model deployment.

Declarative machine learning systems offer an ideal combination of flexibility and ease of use, facilitating the rapid implementation of cutting-edge models. Users concentrate on defining the “what” while the system autonomously determines the “how.” Though you can start with intelligent defaults, you have the freedom to adjust parameters extensively, even diving into code if necessary. Our team has been at the forefront of developing declarative machine learning systems in the industry, exemplified by Ludwig at Uber and Overton at Apple. Enjoy a selection of prebuilt data connectors designed for seamless compatibility with your databases, data warehouses, lakehouses, and object storage solutions. This approach allows you to train advanced deep learning models without the hassle of infrastructure management. Automated Machine Learning achieves a perfect equilibrium between flexibility and control, all while maintaining a declarative structure. By adopting this declarative method, you can finally train and deploy models at the speed you desire, enhancing productivity and innovation in your projects. The ease of use encourages experimentation, making it easier to refine models based on your specific needs.

Create, assess, implement, and enhance tailored natural language processing models with ease. Equip your team to streamline workflows without the need for an AI expert team or expensive infrastructure. Metatext makes it straightforward to develop personalized AI/NLP models, even if you lack knowledge in machine learning, data science, or MLOps. By following a few simple steps, you can automate intricate workflows and rely on a user-friendly interface and APIs to manage the complex tasks. Introduce AI into your team with an easy-to-navigate UI, incorporate your domain knowledge, and let our APIs take care of the demanding work. Your custom AI can be trained and deployed automatically, ensuring that you harness the full potential of advanced deep learning algorithms. Experiment with the capabilities using a dedicated Playground, and seamlessly integrate our APIs with your existing systems, including Google Spreadsheets and other applications. Choose the AI engine that aligns best with your specific needs, as each option provides a range of tools to help in creating datasets and refining models. You can upload text data in multiple formats and utilize our AI-supported data labeling tool to annotate labels effectively, enhancing the overall quality of your projects. Ultimately, this approach empowers teams to innovate rapidly while minimizing reliance on external expertise.

With just a few simple steps, you can create, implement, and oversee AI-driven solutions without the need for coding skills or machine learning knowledge. There's no need to struggle with mismatched tools, navigating feature engineering to reach production, or relying on others for successful outcomes. Managing your AI projects becomes effortless with a platform designed for the complete creation, monitoring, and enhancement of AI solutions throughout their entire lifecycle. Forget about the complexities of feature engineering and hyperparameter adjustments. Anything developed within Graft is assured to function effectively in a production setting, as the platform itself serves as the production environment. Each business has its own distinct needs, and your AI solution should reflect that uniqueness. From foundational models to pretraining and fine-tuning, you maintain full control to customize solutions that align with your operational and privacy requirements. Harness the potential of both unstructured and structured data types, such as text, images, videos, audio, and graphs, while being able to control and adapt your solutions on a large scale. This approach not only streamlines your processes but also enhances overall efficiency and effectiveness in achieving your business goals.

Vishwa.ai, an AutoOps Platform for AI and ML Use Cases. It offers expert delivery, fine-tuning and monitoring of Large Language Models. Features: Expert Prompt Delivery : Tailored prompts tailored to various applications. Create LLM Apps without Coding: Create LLM workflows with our drag-and-drop UI. Advanced Fine-Tuning : Customization AI models. LLM Monitoring: Comprehensive monitoring of model performance. Integration and Security Cloud Integration: Supports Google Cloud (AWS, Azure), Azure, and Google Cloud. Secure LLM Integration - Safe connection with LLM providers Automated Observability for efficient LLM Management Managed Self Hosting: Dedicated hosting solutions. Access Control and Audits - Ensure secure and compliant operations.

Langtail is a cloud-based development tool designed to streamline the debugging, testing, deployment, and monitoring of LLM-powered applications. The platform provides a no-code interface for debugging prompts, adjusting model parameters, and conducting thorough LLM tests to prevent unexpected behavior when prompts or models are updated. Langtail is tailored for LLM testing, including chatbot evaluations and ensuring reliable AI test prompts. Key features of Langtail allow teams to: • Perform in-depth testing of LLM models to identify and resolve issues before production deployment. • Easily deploy prompts as API endpoints for smooth integration into workflows. • Track model performance in real-time to maintain consistent results in production environments. • Implement advanced AI firewall functionality to control and protect AI interactions. Langtail is the go-to solution for teams aiming to maintain the quality, reliability, and security of their AI and LLM-based applications.

Test, launch and refine Gen AI prompting. RAG Agents. Datasets. Workflows. A single workspace for Engineers and Product Managers to explore LLM technology.

We focus on creating and executing solutions that leverage collective intelligence and augmented technology. Stability AI is dedicated to developing open AI tools that enable us to unlock our full potential. Our team consists of passionate builders who are genuinely concerned about the real-world impact of our work. Significant progress often arises from collaboration across various teams, where we embrace the challenge of questioning established norms and fostering creativity. Our core motivation lies in producing groundbreaking ideas and transforming them into practical solutions. We prioritize innovation over tradition, believing that our diverse perspectives strengthen our approach. By valuing these differences, we aim to find common ground and harness the power of varied viewpoints to drive our mission forward. Ultimately, our commitment to collaboration and creativity cultivates an environment where transformative ideas can thrive.

Labellerr is a data annotation platform aimed at streamlining the creation of top-notch labeled datasets essential for AI and machine learning applications. It accommodates a wide array of data formats, such as images, videos, text, PDFs, and audio, addressing various annotation requirements. This platform enhances the labeling workflow with automated features, including model-assisted labeling and active learning, which help speed up the process significantly. Furthermore, Labellerr includes sophisticated analytics and intelligent quality assurance tools to maintain the precision and dependability of annotations. For projects that demand specialized expertise, Labellerr also provides expert-in-the-loop services, granting access to professionals in specialized domains like healthcare and automotive, thereby ensuring high-quality results. This comprehensive approach not only facilitates efficient data preparation but also builds trust in the reliability of the labeled datasets produced.

Introducing the ultimate data annotation tool that offers unparalleled flexibility and ease of installation. Users can create customized user interfaces or opt for ready-made labeling templates tailored to their specific needs. The adaptable layouts and templates seamlessly integrate with your dataset and workflow requirements. It supports various object detection methods in images, including boxes, polygons, circles, and key points, and allows for the segmentation of images into numerous parts. Additionally, machine learning models can be utilized to pre-label data and enhance efficiency throughout the annotation process. Features such as webhooks, a Python SDK, and an API enable users to authenticate, initiate projects, import tasks, and manage model predictions effortlessly. Save valuable time by leveraging predictions to streamline your labeling tasks, thanks to the integration with ML backends. Furthermore, users can connect to cloud object storage solutions like S3 and GCP to label data directly in the cloud. The Data Manager equips you with advanced filtering options to effectively prepare and oversee your dataset. This platform accommodates multiple projects, diverse use cases, and various data types, all in one convenient space. By simply typing in the configuration, you can instantly preview the labeling interface. Live serialization updates at the bottom of the page provide a real-time view of what Label Studio anticipates as input, ensuring a smooth user experience. This tool not only improves annotation accuracy but also fosters collaboration among teams working on similar projects.

Instill Core serves as a comprehensive AI infrastructure solution that effectively handles data, model, and pipeline orchestration, making the development of AI-centric applications more efficient. Users can easily access it through Instill Cloud or opt for self-hosting via the instill-core repository on GitHub. The features of Instill Core comprise: Instill VDP: A highly adaptable Versatile Data Pipeline (VDP) that addresses the complexities of ETL for unstructured data, enabling effective pipeline orchestration. Instill Model: An MLOps/LLMOps platform that guarantees smooth model serving, fine-tuning, and continuous monitoring to achieve peak performance with unstructured data ETL. Instill Artifact: A tool that streamlines data orchestration for a cohesive representation of unstructured data. With its ability to simplify the construction and oversight of intricate AI workflows, Instill Core proves to be essential for developers and data scientists who are harnessing the power of AI technologies. Consequently, it empowers users to innovate and implement AI solutions more effectively.

ModelArk is the central hub for ByteDance’s frontier AI models, offering a comprehensive suite that spans video generation, image editing, multimodal reasoning, and large language models. Users can explore high-performance tools like Seedance 1.0 for cinematic video creation, Seedream 3.0 for 2K image generation, and DeepSeek-V3.1 for deep reasoning with hybrid thinking modes. With 500,000 free inference tokens per LLM and 2 million free tokens for vision models, ModelArk lowers the barrier for innovation while ensuring flexible scalability. Pricing is straightforward and cost-effective, with transparent per-token billing that allows businesses to experiment and scale without financial surprises. The platform emphasizes security-first AI, featuring full-link encryption, sandbox isolation, and controlled, auditable access to safeguard sensitive enterprise data. Beyond raw model access, ModelArk includes PromptPilot for optimization, plug-in integration, knowledge bases, and agent tools to accelerate enterprise AI development. Its cloud GPU resource pools allow organizations to scale from a single endpoint to thousands of GPUs within minutes. Designed to empower growth, ModelArk combines technical innovation, operational trust, and enterprise scalability in one seamless ecosystem.