Inworld AI vs MCP for Unity
Inworld AI (Inworld AI) and MCP for Unity (Coplay) side by side on public data, as of Oct 9, 2026.
MCP for Unity has 150.4x the weekly package downloads of Inworld AI (65.9K against 438). Over the last 30 days downloads moved +336% for Inworld AI and -23% for MCP for Unity. MCP for Unity shipped 5 stable releases in the past 90 days.
Side-by-side numbers
| Metric | Inworld AI | MCP for Unity |
|---|---|---|
| Gid Score | 40 | 36 |
| Overall rank | #104 | #116 |
| Downloads, last 7 days | 438 | 65.9K |
| Downloads, 7-day change | up 234.4% | up 97.1% |
| Downloads, 30-day change | up 335.9% | down 23.1% |
| VS Code installs | — | — |
| Marketplace rating | — | — |
| GitHub stars | — | 14.8K |
| Homebrew installs, 30 days | — | — |
| Hacker News mentions, 30 days | — | — |
| Latest stable release | — | 10.3.0 · 5d ago |
| Stable releases, 90 days | 5 | |
| Terminal-Bench (best run) | — | — |
| Price | Free + $25/mo | Free (OSS) |
| License | MIT | |
| First released | — | — |
| Interfaces | API, SDK, CLI | MCP server, Unity plugin |
| Models |
Trends
Inworld AI
Inworld offers realtime speech-to-speech, TTS, STT and LLM routing APIs that game studios can use for NPCs that respond to player speech, world state and story context, with viseme timestamps for lip-sync. It works from Unreal, Unity or custom engines over REST, WebSocket or WebRTC, and games are now one of several markets alongside companions, education and voice agents.
Pricing: On-Demand starts free (up to 70 minutes of TTS or 400 minutes of STT free) with pay-as-you-go rates; Creator $25/mo, Builder $100/mo, Developer $300/mo, Growth $1,500/mo with lower per-unit TTS/STT rates; Enterprise custom; LLMs at cost.
MCP for Unity
MCP for Unity is an open-source bridge that lets AI assistants such as Claude Code, Cursor, VS Code, Windsurf, Cline and Gemini CLI manage assets, control scenes, edit scripts and automate tasks in the Unity Editor. It is a Unity package (git URL or OpenUPM) plus a Python MCP server, and its README says it is sponsored and maintained by Aura.
Pricing: Free and open source (MIT).
Latest release 10.3.0:
- chore: sync main (v10.2.0) into beta
- perf(discovery): drop the redundant assembly walk from tool discovery too
- chore: update Unity package to beta version 10.2.1-beta.2
- fix: Claude Code registrations invisible to CheckStatus (duplicate path-variant keys, git worktrees)