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Character.AI is an online service that lets users create and interact with AI-driven chat characters.
The goal is the player’s experience, which boils down to whether the companion feels like a good teammate. That is hard to judge from offline metrics or a small internal team alone. So the loop that mattered most was simple: develop a fast prototype, put it in front of a large number of real players, and improve the model from their feedback, then repeat. Each turn through that cycle taught us more about what “a good teammate” actually means than any amount of upfront design could. If we could give just one piece of advice, it would be to get that loop running early, and to keep it cheap enoug
Q&A: How KRAFTON Built PUBG Ally, a Co-Playable Character Powered by NVIDIA ACE | NVIDIA Technical BlogFor Unreal Engine 5 developers and technical artists, a new suite of NVIDIA ACE plugins is now available. These local, runtime AI models support both Blueprint and C++ integration out of the box, covering three pillars: Automatic speech recognition (ASR): Includes a ready-to-use English language model, nemo-conformer-ctc-120m, with download options for seven additional languages, a sample level, and Blueprint examples for rapid setup. Small language models (SLM): Provides local GGUF support, for low-latency text generation and function calling capabilities, optimized for immediate character d
Build On-Device AI Companions with the NVIDIA ACE Game Agent SDK and Unreal Engine 5 Plugins | NVIDIA Technical BlogContent Creation / Rendering What’s New for Game Developers in NVIDIA RTX: DLSS 4.5 for UE5 and Multilingual AI Characters May 27, 2026 By Phillip Singh Discuss 1 Discuss 1 L T F R E NVIDIA RTX provides game developers with direct paths to AI-driven characters, frame generation, and ray-traced rend… …
… ACE provides ready-to-integrate cloud and on-device AI models for each aspect of in-game characters—from speech to intelligence to animation. Key Benefits Small Models for Gaming ACE offers small AI models—from speech to vision, built to enhance game characters. …
… Learn how to create deeply reactive, always-in-character AI personalities. Using synthetic training data generated by large teacher models, you can distill character behaviors into lightweight, deployable LoRA-powered performances that run locally on NVIDIA GeForce RTX hardware. …
… If you’re building AI-driven game characters, get started with NVIDIA ACE , a suite of on-device and cloud AI models for speech, intelligence, and animation. …
… Related Products NVIDIA ACE NVIDIA ACE is a suite of digital human technologies that bring game characters and digital assistants to life with generative AI. …
… Additional RTX Rendering Technologies Generative AI Face Rendering RTX Neural Faces is a new generative AI algorithm that allows developers to cross the uncanny valley in real time. This AI model is trained on a character dataset built from the original photographs of the model. …
… ACE for Games NVIDIA ACE is a suite of digital human technologies for middleware and game developers that powers conversational NPCs and autonomous game characters using generative AI. …
… This post provides a detailed overview of these latest innovations, including: Introducing a new system for dense, path-traced foliage in NVIDIA RTX Mega Geometry Adding path-traced indirect lighting with ReSTIR PT in the NVIDIA RTX Dynamic Illumination SDK and RTX Hair beta for strand-based accele… …
… This can help reduce iteration time and expand the range of character movement in a project, while maintaining consistency with existing animation systems. …
… First, it allowed us to get far more out of our low-detail character models. The mesh geometry is exactly the same, but RTX Skin makes it appear significantly more detailed. …