Dia is a text-to-speech (TTS) model developed by Nari Labs, featuring 160 million parameters, capable of generating highly realistic conversations directly from text. The model supports emotion and intonation control and can generate non-verbal communication such as laughter and coughs. Its pre-trained model weights are hosted on Hugging Face and are suitable for English generation. This product is crucial for research and educational purposes, enabling advancements in conversational AI technology.

Audiblez is a tool that leverages Kokoro's high-quality speech synthesis technology to convert standard eBooks (in .epub format) into .m4b format audiobooks. It supports multiple languages and voices, allowing users to complete the conversion through simple command-line operations, greatly enriching the eBook reading experience, especially in situations where reading isn't convenient, such as while driving or exercising. This tool was developed by Claudio Santini in 2025 and is open-source under the MIT License.

Auralis is a text-to-speech (TTS) engine that converts text into natural speech quickly, supports voice cloning, and boasts extremely fast processing speeds—capable of handling an entire novel in just minutes. The product is distinguished by its high speed, efficiency, easy integration, and high-quality audio output, making it suitable for scenarios requiring rapid text-to-speech conversion. Built on a Python API, Auralis supports long text streaming, built-in audio enhancement, automated language detection, and more. Developed by AstraMind AI, Auralis aims to provide a practical TTS solution for real-world applications. While product pricing is not explicitly stated on the page, the codebase is released under the Apache 2.0 License, allowing for free use in projects.

Fish Agent V0.1 3B is a groundbreaking speech-to-speech model capable of capturing and generating environmental audio information with unprecedented accuracy. The model utilizes a non-semantic tagging architecture, eliminating the need for traditional semantic encoders/decoders. Additionally, it is a cutting-edge text-to-speech (TTS) model trained on 700,000 hours of multilingual audio content. As a continuation of the Qwen-2.5-3B-Instruct pre-trained version, it has been trained on 200 billion speech and text tags. The model supports eight languages, including English and Chinese, with approximately 300,000 hours of training data for each of these languages and around 20,000 hours for others.

Dia is a text-to-speech (TTS) model developed by Nari Labs, featuring 160 million parameters, capable of generating highly realistic conversations directly from text. The model supports emotion and intonation control and can generate non-verbal communication such as laughter and coughs. Its pre-trained model weights are hosted on Hugging Face and are suitable for English generation. This product is crucial for research and educational purposes, enabling advancements in conversational AI technology.

Vapi is a voice AI agent platform designed for developers, supporting the needs of enterprises ranging from startups to Fortune 500 companies. Its flexible API design and multi-language support make it particularly valuable in phone operations and customer service. The product is positioned to improve business efficiency and features enterprise-grade reliability and security. Vapi is suitable for all types of businesses, especially those in industries that require large-scale handling of phone calls, such as customer service and technical support. Its pricing strategy is a paid model, priced according to usage and functional needs.

OpenAI.fm is an interactive demonstration platform that allows developers to experience the latest text-to-speech models gpt-4o-transcribe, gpt-4o-mini-transcribe, and gpt-4o-mini-tts in the OpenAI API. This technology generates natural and fluent speech, making text content vivid and easy to understand. It is suitable for a variety of application scenarios, especially in voice assistants and content creation, helping developers better communicate with users and enhance user experience. This product is positioned for efficient speech synthesis and is suitable for developers who wish to integrate speech functions.

Kokoro TTS is a powerful text-to-speech tool that supports multiple languages and voice blending features, capable of converting EPUB, PDF, and TXT files into high-quality speech output. The tool provides developers and users with flexible voice customization options to easily create professional-grade audio. Its main advantages include multilingual support, voice blending, flexible input formats, and a free commercial license. This product is positioned to provide creators, developers, and businesses with an efficient and low-cost speech synthesis solution, suitable for audiobook creation, video narration, podcast production, educational content generation, and customer service, among other scenarios.

Mistral OCR is an Optical Character Recognition (OCR) API launched by Mistral AI, aiming to accelerate information extraction and application through efficient document content parsing. It can handle documents in various formats, including PDFs and images, and extract text, tables, formulas, and images with high accuracy. The core advantage of this technology lies in its ability to deeply understand complex documents, supporting multilingual and multimodal input, suitable for enterprises and institutions worldwide. It is priced at $1 per 1000 pages, making it suitable for large-scale document processing.

Lemonfox.ai Text-to-Speech API is an API service focusing on text-to-speech (TTS). It leverages advanced AI technology to quickly convert text into natural and fluent speech, supporting multiple languages and accents, suitable for various scenarios such as voice broadcasting and audiobook production. Its main advantages include low cost, high quality, and easy integration, enabling enterprises or developers to quickly implement voice functions and enhance user experience. This product is positioned as an efficient and cost-effective TTS solution for enterprises and developers, offering reasonable pricing, a free trial, and high value for money.

DeepSeek R1 and V3 APIs are powerful AI model interfaces provided by Kie.ai. DeepSeek R1 is the latest reasoning model designed specifically for advanced reasoning tasks such as mathematics, programming, and logical reasoning. Trained through large-scale reinforcement learning, it delivers precise results. DeepSeek V3 is suitable for handling routine AI tasks. These APIs are deployed on secure U.S.-based servers, ensuring data security and privacy. Kie.ai also offers detailed API documentation and a variety of pricing plans to meet diverse needs and help developers quickly integrate AI capabilities and improve project performance.

DMXAPI, provided by the LangChain Chinese website, is a large model API aggregation service aimed at helping developers quickly access the world's leading large models. By centralizing procurement and collaborating directly with the original model manufacturers, DMXAPI offers competitive pricing and efficient services. Supported models include GPT-4, Claude, LLaMA, and more, covering various application scenarios such as natural language processing, image recognition, and generative AI. The main advantages of DMXAPI include security, low cost, high efficiency, and 24/7 online customer support, ensuring that users can use the service without concerns.

Orate is a powerful AI voice toolkit that can convert text into realistic speech and vice versa. It supports multiple mainstream AI service providers and offers the main advantage of a unified API, making it easy for developers to quickly integrate and use. This toolkit is suitable for application development requiring voice interaction features, such as smart voice assistants and voice broadcasting systems. Pricing and specific positioning are not yet clear, but based on its features and community feedback, it shows high practicality and developmental value.