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    Conversational AI for games / virtual worlds (NPC platform)
    Freemium
    Free Trial
    Sponsored

    Convai

    Conversational AI for games / virtual worlds (NPC platform)

    Convai is a developer platform for building embodied conversational AI characters (NPCs) in 3D virtual worlds, games, and XR experiences. Characters can see (vision), hear, remember context, speak in 65+ languages, perform animations, and follow narrative flows. Integrates with Unreal Engine, Unity, WebGL/Three.js, and NVIDIA Omniverse via plugins and APIs.

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    Alternatives & similar tools

    Related picks from editorial notes.

    Also mentioned

    • Inworld AI (game NPC conversational AI)
    • Charisma.ai (interactive storytelling NPCs)
    • NVIDIA ACE (NVIDIA's character AI stack; Convai is an ACE partner)

    Features & details

    Full overview from our catalog (read-only reference).

    Category (short)
    Conversational AI for games / virtual worlds (NPC platform)
    Category
    Conversational AI for games / virtual worlds (NPC platform)
    Pricing (CSV)
    Free Trial
    Directory pricing
    Freemium
    Sponsored note
    no
    Target audience
    Game developers (indie to mid-size studios), XR/VR experience creators, Developers using Unity or Unreal Engine, Teams building training simulations with embodied AI, NVIDIA ecosystem developers (ACE, Omniverse), Not ideal for: website customer support chatbots, non-3D use cases, or teams wanting simple no-code chat widgets.
    Best for
    Game developers (indie to mid-size studios), XR/VR experience creators, Developers using Unity or Unreal Engine, Teams building training simulations with embodied AI, NVIDIA ecosystem developers (ACE, Omniverse), Not ideal for: website customer support chatbots, non-3D use cases, or teams wanting simple no-code chat widgets.
    Pricing notes
    Verified from convai.com/pricing and FAQs (July 2026): Plan — Price — Key limits Free — $0 — ~100 interactions/mo; 1 concurrency; 1MB knowledge bank Indie Dev — ~$22/mo (promo; list ~$29) — ~3,000 interactions; 1 concurrency Professional — ~$69/mo (promo; list ~$99) — ~10,000 interactions; 3 concurrency; 20MB knowledge Scale — ~$329/mo (promo; list ~$499) — ~50,000 interactions; 15 concurrency; 100MB knowledge Business — ~$499/mo — Higher volume; multiple domains Enterprise — Custom — On-prem, dedicated support, custom SLAs "Character concurrency" = max simultaneous user sessions across all NPCs on one API key. Flagship LLM interactions and HQ third-party voices have separate caps per tier.

    Pros & cons

    Editorial notes to help compare fit before opening the vendor site.

    Pros

    • Purpose-built for 3D game/XR NPCs (not repurposed chatbot)
    • Vision + voice + animation in one platform
    • Unity, Unreal, Three.js, Omniverse integrations
    • 65+ languages and narrative flow designer
    • Free tier for prototyping
    • NVIDIA ACE ecosystem partner

    Cons

    • Interaction and concurrency limits restrict scale on lower tiers
    • Pricing jumps significantly for production Scale/Business tiers
    • Not suitable for non-embodied / website chat use cases
    • Flagship LLM caps separate from base interaction quota
    • Enterprise/on-prem requires sales engagement
    • Documentation depth varies by engine integration

    Review notes

    Context from the listing review and editorial research.

    Overall market reception: Leading specialized NPC platform; featured in NVIDIA CES demos; 15K+ signups cited by NVIDIA blog. Common praise: Easy character setup, game engine integration, multimodal perception, active developer community/Discord. Common criticisms: Interaction limits add up fast; concurrency limits restrict live apps; pricing complexity (interactions vs concurrency vs LLM tier). Ratings: Strong in game dev community; highest-rated on NVIDIA developer spotlight.

    Extended features

    In-depth description and capability notes.

    Character crafting — Define backstory, personality, goals, and knowledge banks (document upload). Multimodal perception — Vision (webcam/POV) and audio input for spatially aware NPCs. 65+ languages, 500+ voices — Multilingual dialogue with lip-sync and facial animation. Narrative design — Custom conversation flows and role-playing scenarios. Complex actions — Trigger animation sequences and in-world behaviors via API. Game engine plugins — Unofficial Unity, Unreal, Three.js integrations with docs and tutorials. Long-term memory — Character remembers past interactions (paid tiers). Convai Sim / Avatar Studio — Cloud-rendered avatar testing environment.

    Use cases

    Convai fits game developers, XR creators, and training-simulation builders who need intelligent NPCs that respond naturally to player speech and environment — not generic chatbots on a website. Game NPCs with voice interaction and emotional responses VR/AR training simulations with role-play characters Virtual brand representatives in metaverse experiences Educational role-playing scenarios NVIDIA ACE/Omniverse character integration Interactive museum or exhibit guides Prototyping conversational agents before custom LLM builds