Convai

Conversational AI characters for games and virtual worlds: NPCs with voice, knowledge and actions.

Visit official site ↗Free tier + paidCommercial use allowed

Verdict: For conversational NPCs with a free tier to prototype on; its terms give you ownership of AI-generated content.

Best for
Prototyping conversational NPCs
Tasks
NPC & AI characters, Voice & dialogue
Engines
Any (standard file export / engine-agnostic)
Price & free tier
Free plan 100 interactions quota
Free $0/month (100 interactions quota). Paid tiers listed at $29, $99, $499 and $1,199 per month (lower discounted figures also shown).
Source: https://convai.com/pricing
Export formats
n/a (runtime service)
Commercial use & licence
Commercial use allowed
Terms of Service: you have ownership over your Customer Content and AI Generated Content.
Source: https://convai.com/tos
Revenue share / caps
unverified
API
Available Character and core APIs
Source: https://docs.convai.com/api-docs/api-reference/core-api-reference/character-crafting-apis
MCP server
Connects to MCP servers Characters can call external MCP servers
Source: https://docs.convai.com/api-docs/api-reference/core-api-reference/character-crafting-apis/mcp-server-api
Last checked

We summarise what the vendor's own pages say on the date above. "Unverified" means we couldn't confirm that detail. Read the vendor's current terms before you ship anything.