Editorial illustration for KRAFTON’s PUBG Ally uses NVIDIA ACE TTS and behavior trees for real‑time play
KRAFTON’s PUBG Ally uses NVIDIA ACE TTS and behavior...
The shot rings out. You're pinned behind a wall, thirsting for ammo and a flank. Your human squadmate is down, but your other teammate, PUBG Ally, doesn't panic.
It moves. It talks. It decides.
This isn't a canned script; it's a living, breathing co-player that hears your call for cover and, in the same breath, charts a path to get you there. KRAFTON pulled that off by splitting the brain: one part handles lightning-fast game actions with a behavior tree that reacts in milliseconds, while another runs a small language model locally to keep conversation flowing without lag. No waiting on cloud servers for a clumsy quip.
No frozen character while the LLM mulls over a tactical response. Why a 2-billion-parameter model instead of a behemoth? Because when a grenade is cooking, a teammate that thinks bigger might also think slower.
PUBG Ally uses automatic speech recognition, a 2B-parameter small language model, and text-to-speech to understand player voice, reason through game context and dynamic events, and respond in real time. KRAFTON is calling the result a co-playable character (CPC): a new category distinct from non-playable characters (NPCs), designed to cooperate, adapt, and remember across sessions.
The real test of any AI teammate isn’t its ability to recite trivia or pen poetry. It’s whether it can drop into a firefight, take cover when you’re pinned, and call out an ambush before the bullets arrive, without making you wait. KRAFTON’s PUBG Ally answers that challenge by refusing to treat every moment as a language problem.
Speech gets the small-model treatment, fast and local. Actions run on behavior trees, lean and immediate. The two never block each other.
Mistral-NeMo-Minitron-2B isn’t a compromise; it’s a deliberate choice. It means Ally can ride shotgun on a laptop, respond in milliseconds, and keep its mouth shut when silence is the smarter play. That is the difference between a chatbot and a real squadmate.
By choosing latency over scale, KRAFTON proves that speed of thought, and the speed of a trigger finger, is what makes an AI feel alive in the chaos of a match.
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Common Questions Answered
How does KRAFTON's PUBG Ally handle both speech and game actions without latency issues?
PUBG Ally uses a split-brain architecture where speech processing is handled by a small-model TTS system that runs fast and locally, while game actions are managed by behavior trees that react in milliseconds. This design ensures that speech and actions never block each other, allowing the AI teammate to respond to player calls for cover and make tactical decisions in real-time without delays.
What role do behavior trees play in PUBG Ally's real-time gameplay performance?
Behavior trees enable PUBG Ally to make lightning-fast game decisions and execute immediate tactical responses, such as taking cover when a player is pinned or charting paths to provide flanking support. These trees are lean and efficient, allowing the AI to react within milliseconds rather than treating every moment as a language processing problem.
Why did KRAFTON choose NVIDIA ACE TTS for PUBG Ally's voice capabilities?
NVIDIA ACE TTS provides fast, local speech processing that keeps communication latency minimal, which is critical for a real-time multiplayer game where teammates need to hear callouts and instructions immediately. By using this small-model approach for speech, KRAFTON ensured that voice communication wouldn't interfere with the AI's ability to execute rapid tactical actions.
What makes PUBG Ally different from a scripted AI teammate in tactical situations?
PUBG Ally is not based on canned scripts; instead, it uses intelligent decision-making systems that allow it to genuinely respond to player needs and adapt to dynamic firefight situations. The AI can hear player calls for cover, understand context, and independently chart paths to provide tactical support, making it behave like a living, thinking co-player rather than following predetermined responses.
Further Reading
- PUBG: BATTLEGROUNDS Ally AI Companion Deep Dive - YouTube — YouTube (GDC 2026 Session)
- PUBG Ally Duo Mode Two-Week Beta Available Now, Adding A New AI Teammate — NVIDIA GeForce News
- Building a Co-Playable Character: 'PUBG' Ally, an AI Teammate Powered by NVIDIA ACE — GDC 2026 Schedule
- KRAFTON REVEALS PLAYTEST PLANS FOR 'PUBG ALLY,' BUILT WITH NVIDIA ACE — Gamespress
- PUBG Ally is the world's first in-game AI agent that can reason, act autonomously, and play alongside players — X (Twitter)
