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Pika offers self-contained AI creative tools for video, image and sound work. Tools include Video Studio for generating clips up to a 30-second multi-shot video, Color Grade for adjusting color and contrast, Extend Video for lengthening clips with extra frames, and Pika Soundtrack for scoring clips. Character Studio, Image Studio and Product Shot support image creation and editing. Support is available for the web, the iOS app and the API.
Build AI apps with one API, user wallets, and developer earnings.
Prediction Guard is a self-hosted AI control plane described as enforcing NIST and OWASP-aligned runtime controls inside an organization's security boundary. It offers Agent Forge for creating interactive and autonomous agents, and an OpenAI, Anthropic and MCP compatible API. The site lists a Docker Verified Publisher agentic program entry and a verified Agent Control Kit on Docker Hub.
PricePerToken is a free comparison site for LLM API pricing. It presents per-token costs for models from providers including OpenAI, Anthropic, Google and Mistral, alongside model listings with context windows and benchmark figures. Pages cover individual models such as Amazon Nova Lite 1.0 and Nova Micro 1.0, whose pricing and context windows are stated.
Privatiser anonymizes IPs, API keys, passwords, PII and cloud identifiers before text is pasted into AI tools. It runs in the browser with local processing, preserves structure, and offers a reversible mapping to restore values in replies. It is free and open source.
PyBrain is a Python machine learning library distributed under a BSD-3-Clause license. The repository includes documentation, examples, and a setup script; installation requires SciPy and is performed with python setup.py install or by cloning the repository. The project provides a quickstart, tutorials, and an API reference in its documentation.
Qwen is an AI project whose site lists models including Qwen3Guard, a safety guardrail model built on Qwen3 foundation models for detecting risk in prompts and responses. It also lists Qwen-Image-Edit, an image editing version of a 20B Qwen-Image model, and Qwen-MT, a translation model via Qwen API supporting 92 languages.
RabbitHoles AI, now operating as Slashspace, is an AI-native infinite canvas platform for deep work, research, and learning. It supports multi-step research tasks, allows users to branch AI responses to maintain context, supports integrating PDFs, web pages, YouTube videos and notes as context, and includes an orchestrator mode for automated work planning. The platform works with Claude, ChatGPT, user-provided API keys, and local AI models, and offers a 3-day free trial.
Rapid-MLX is an open-source, Apache 2.0 licensed large language model inference server and Mac application for Apple Silicon devices. It is compatible with OpenAI and Anthropic APIs, built on the MLX framework, and focused on reliable tool calling for coding agents.
RapidTextAI is an AI article generator and auto-publishing platform. A campaign is set up once with topics, AI model, tone and schedule, and RapidTextAI writes and optimizes SEO articles and publishes them on a schedule to WordPress, Medium, LinkedIn and other apps through Zapier. It also offers a REST API, a mobile app, a Chrome extension and a WordPress plugin. Content can be created in over 50 languages.
ReadSpeaker is a text-to-speech company that converts text to natural-sounding voice output for education and enterprise use cases. Its offerings include web accessibility tools, custom brand voice development, and voice AI for third-party products, with support for more than 90 languages. The company provides a range of products including text-to-speech APIs, SDKs, and embedded solutions, with sector-specific solutions for gaming, transportation, government, healthcare, and other industries.
Rebyte is an execution layer for enterprise agents. It runs agents in the cloud with durable execution, tools such as browsers, files, and compute, and policy controls over models, skills, MCP servers, and network access. Execution traces record model steps, tool calls, errors, tokens, and cost. The Agent API is compatible with the official OpenAI client and is described as model agnostic.
Redash is an open source tool for connecting to data sources, querying, visualizing and sharing data. It supports SQL, NoSQL, Big Data and API sources including PostgreSQL, MySQL, Redshift, BigQuery and MongoDB. Users build dashboards, set alerts and manage access.
Resemble AI provides multimodal deepfake detection and watermarking for enterprise. It powers real-time detection of synthetic audio, video, and images, offers APIs, intelligence insights, and identity registration. It includes tools like meetings protection, agent detection, a Chrome extension, and integrates with Microsoft Teams. The company develops research models such as DETECT-World and PerTh Multimodal. It serves industries including telecom, finance, media, health, and public sector.
Respeecher provides an AI voice generator for professional production workflows. It offers enterprise-grade voice cloning and synthetic speech services, including a real-time text-to-speech API for voice agents. Its Voice Marketplace supplies over 40 AI voices and a plugin for Pro Tools. The company serves entertainment, film, TV, animation, games, broadcasting, sports, podcasts, audiobooks, music, and advertising sectors. Free testing and flexible integration are available.
RestGPT is an open-source autonomous agent built on large language models, designed to control real-world applications via RESTful APIs. The project is hosted on GitHub for public access and collaborative development.
Rev AI, part of the Rev family, is a developer-first API that delivers industry- accuracy and fast performance at global scale. Click to learn more.
ReviewCerberus is an AI-powered code review tool that analyzes git branch differences and generates review reports. It examines logic, security, performance and code quality, and supports AWS Bedrock and Anthropic API, according to the repository. A GitHub Action posts review comments on pull requests.
RunDiffusion is a platform providing access to AI models for image generation, image editing, upscaling and video creation. It offers open source tools including ComfyUI, Fooocus, Auto1111 and Kohya, and states that workflows can chain tools for business use cases. A public API covers boards, generations, reporting and uploads.
Scenario is a platform for creative production and game assets that brings together image, video, 3D and audio generation models. Users build pipelines as nodes on a canvas and can publish a chain as an app for teammates. It offers custom model training on reference images and connects to assistants and code through Scenario MCP and a REST API.
Python-free Rust inference server with OpenAI API compatibility and hot model swapping.
Sightengine provides APIs for assessing, filtering and moderating images, videos, text and audio. It detects nudity, violence and offensive content, and flags AI-generated media such as images, video, speech and music. Additional models cover face liveness, near-duplicate and spam detection, and OCR, returning JSON detection results from a single API call.
Sisif renders short AI videos from text prompts. It charges $1 per 5-second clip with no subscription, and the site says credits never expire. Clips carry no watermark, and the service offers portrait video plus a REST API with pay-per-call support for agents.
Skale is a distributed data processing and machine learning engine that provides a high-level API in JavaScript and a parallel execution engine on top of Node.js. The repository was archived by its owner on May 29, 2021 and is read-only. It supports multiple data sources and formats, and can run in local or distributed mode.
