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Best NVIDIA ACE alternatives

The top alternatives to NVIDIA ACE are Convai, Inworld, Charisma.ai. If you want a free option, start with Convai.

  1. 1

    Convai

    Indie devs adding talking NPCs to Unity or Unreal.

    Free planCommercial use OK

    Type: NPCs & dialogueEngines: Unity, Unreal, Web

    Free plan
    Paid plans from $29/mo
    Visit

    Pros

    • Free plan available
    • Commercial use allowed
    • Works with Unity, Unreal, Web
  2. 2

    Inworld

    Studios building voiced, conversational characters.

    Commercial use OK

    Type: NPCs & dialogue, VoiceEngines: Unity, Unreal

    From $25/mo
    starting price
    Visit

    Pros

    • Limited free tier
    • Commercial use allowed
    • Works with Unity, Unreal

    Cons

    • Needs technical skills
    • Long-term memory: limited (Realtime API keeps memory per session; your app must save and restore it between sessions)
    • Runs on device: limited (On-device text to speech is in private preview, by request)
  3. 3

    Charisma.ai

    Narrative games with AI-driven dialogue.

    Commercial use OK

    Type: NPCs & dialogueEngines: Unity, Unreal

    From $5/mo
    starting price
    Visit

    Pros

    • Commercial use allowed
    • Works with Unity, Unreal
    • Unity SDK

    Cons

    • Free trial only, no free plan
    • No runs on device

Ranked on our NPCs & dialogue scoring. Back to the NVIDIA ACE review