In Voice & dialogue, Inworld AI ranks #2 and Gridly ranks #5. Inworld's own Realtime TTS-2 is #7 of 97 on Artificial Analysis's text-to-speech leaderboard (TTS-2 Flash is #12). AA text-to-speech leaderboard
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.
Realtime text-to-speech and LLM inference platform that can power voiced, interactive characters.
Verdict
For teams that want game strings, AI translation and voiceover files in one tool; there is no free plan, only a 14-day trial.
For realtime TTS and LLM-driven characters on pay-as-you-go pricing; its terms assign outputs to you.
Tasks●
Localisation, Voice & dialogue
Voice & dialogue, NPC & AI characters
Engines
Unity, Unreal
Unity, Unreal
Free plan●
Free trial or credits only 14-day Team trial
Free plan Free pay-as-you-go account
Pricing
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
Free pay-as-you-go (US$25 per 1M chars TTS). Subscriptions US$25, US$100, US$300 and US$1,500 per month with included credits and lower rates. source
Export formats
Not stated by vendor
Not stated by vendor
Commercial use●
Commercial use: not stated by vendor Gridly processes your own content. Ownership terms for AI translations and voiceover output were not checked: unverified. source
Commercial use allowed Terms: subject to compliance, Inworld assigns to you all of its right, title and interest in Outputs. Pricing page also lists a commercial license. source
Revenue share / caps
Not stated by vendor
Not stated by vendor
API
Available. API included (request limits per plan) 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.