Inkling vs. Fastino

Inkling is an open-weights multimodal AI model from Thinking Machines built to support customization, agentic workflows, coding, reasoning, vision, audio, and enterprise AI use cases. The model is a Mixture-of-Experts transformer with 975 billion total parameters, 41 billion active parameters, 256 routed experts per MoE layer, and six routed experts active per token. It supports context windows up to 1 million tokens and was pretrained on 45 trillion tokens across text, images, audio, and video. Inkling is designed as a broad foundation model rather than a narrowly optimized benchmark model, giving it balanced capabilities across reasoning, coding, factuality, instruction following, vision, audio, tool use, and safety. Its controllable thinking effort lets developers adjust how much computation and generated reasoning the model uses, helping teams balance quality, latency, and cost for different production needs. The model can run agentic coding tasks, use tools, create web apps, generate polished multi-page artifacts, reason over long contexts, and work through iterative refinement loops. For multimodal tasks, Inkling can process images, answer questions about visual content, transcribe and reason over audio, follow spoken instructions, and combine visual reasoning with code-based tools such as Python. Thinking Machines trained Inkling for calibration, instruction following, factual reliability, refusal behavior, and safety across multiple modalities, including evaluations for dangerous capabilities and human-AI threat vectors. Inkling is available on Tinker for fine-tuning, with 64K and 256K context options, an Inkling Playground for testing, cookbook recipes, and support for multimodal post-training workflows. Its full weights are available on Hugging Face, and deployment support is available through APIs and infrastructure partners such as TogetherAI, Fireworks, Modal, Databricks, Baseten, SGLang, vLLM, llama.cpp, and transformers.

Fastino functions as an advanced AI platform that focuses on open-weight language models and features the Fastino Fine-Tuning Agent. This cutting-edge agent empowers users to define tasks in straightforward language, which then leads to selecting the right architecture, generating relevant training data, performing training and evaluation, and eventually providing a model customized for specific tasks that is ready for implementation. Through a unified interface, users can both start and revisit fine-tuning initiatives, ensuring that the resulting models align with their requirements and can be integrated into their own systems. The models developed by Fastino are optimized for production-grade performance, typically achieving response times under 50 milliseconds, while also safeguarding user ownership and privacy of the model weights. Impressively, the transition from a simple task description to a fully trained model can take just hours, allowing teams to streamline their specialized deployment processes considerably. In addition, Fastino provides a variety of open-source and open-weight models tailored for numerous specialized AI applications, thereby enhancing user accessibility and adaptability. This comprehensive approach not only simplifies the fine-tuning process but also opens up new possibilities for innovation in AI-driven solutions.