In Voice & dialogue, Convai ranks #3 and Gridly ranks #5. No independent quality tests found. Ranked on game-dev fit: commercial use allowed; Unity, Unreal integrations; API. Uses voices from other providers, so other companies' leaderboard results don't count for it.
Conversational AI characters for games and virtual worlds: NPCs with voice, knowledge and actions.
Content and localisation platform with a game-localisation use case: spreadsheet-style grids for strings, AI translation with linguistic context, AI voiceover files and an API.
Verdict
For conversational NPCs with a free tier to prototype on; its terms give you ownership of AI-generated content.
For teams that want game strings, AI translation and voiceover files in one tool; there is no free plan, only a 14-day trial.
Tasks●
NPC & AI characters, Voice & dialogue
Localisation, Voice & dialogue
Engines●
Unity, Unreal, Roblox
Unity, Unreal
Free plan●
Free plan 100 interactions quota
Free trial or credits only 14-day Team trial
Pricing
Free $0/month (100 interactions quota). Paid tiers listed at $29, $99, $499 and $1,199 per month (lower discounted figures also shown). source
14-day trial of the Team tier. Basic starts at €99/month with 3 seats included (2,500 automated updates and 3,000 API requests per month). Team and Enterprise tiers cost more or are custom; see the pricing page. source
Export formats●
n/a (runtime service)
Not stated by vendor
Commercial use●
Commercial use allowed Terms of Service: you have ownership over your Customer Content and AI Generated Content. source
Commercial use: not stated by vendor Gridly processes your own content. Ownership terms for AI translations and voiceover output were not checked: unverified. source
Rows marked ● differ between the two tools. Licence badges: green = commercial use allowed (including any free plan or trial), amber = paid plans only, restricted, or allowed but with no free plan, red = not allowed, grey = not stated by vendor or not applicable. Read the vendor's current terms before you ship.