Gemini platform

Model Show thinking text (Flash) Ground with Google Search (real-time web; billed per query) Thinking level (Gemini 3 Flash)

Your message

Ask for HTML/CSS/JS (fenced block). This preview disables pointer lock and fullscreen so the tab cannot hang — use Open for 3D / FPS-style games.

Open in Codemesh

Built URL looks like https://codemesh.org/?code=…. Base URL = origin (e.g. https://codemesh.org). Path = route on that host — / for home, or /play if your app handles code there (then you get https://codemesh.org/play?code=…). Query param = the query key your Codemesh app reads (code, q, etc.). Very long code may hit browser URL limits; use Copy and paste for huge payloads.

Base URL Path Query param

Model Ground with Google Search (for up-to-date visuals; billed per query) Prompt Optional reference image (base64 edit)

Veo 3.1 Fast Standard Veo 3.1 removed — lower cost, same 720p / 1080p / 4K options.

Resolution

Duration

Aspect ratio

Prompt Optional start image (PNG or JPEG recommended)

Video can take several minutes. Keep this tab open. If image upload fails, try a smaller PNG/JPEG — WebP may not be supported by Veo.