Genie 4 vs. Genie 3 — and where Gemini fits

Use the full name when asking for support. “I can open Project Genie” and “I have Genie 4 access” are different statements.

Genie 3’s August 2025 launch post described 720p worlds at 24 frames per second, with consistency over a few minutes. Those are Genie 3 launch claims. They should not be copied into a Genie 4 specification table or confused with a particular product’s session timer.

The screenshot below identifies the earlier announcement. It is useful when a search result cites an older article without making the model generation clear.

Google’s Genie 4 model page emphasizes live scene changes, native sound, and more realistic motion. It also describes contributions from Gemini models to appearance, reasoning, and continuity.

That relationship does not make the products interchangeable. A reasoning model can help plan a sequence without exposing the same world-generation interface to its own API callers.

For comparisons, separate three columns in your notes: what is announced, what the product currently exposes, and what you have personally tested. Leave a blank where there is no evidence.

• You want to see interactive world generation: watch the official Genie demos and inspect the current Project Genie eligibility.
• You need Genie 4 specifically: follow the official waitlist and rollout, rather than assuming a subscription supplies it.
• You need text reasoning in an app: evaluate the relevant Gemini model’s documented API.
• You need an editable game: verify required engine assets, logic, and export formats separately.

These are editorial decision rules. They do not rank one model as universally better. The right comparison is the one that matches the output you need.

Keep the scene, subject, camera goal, and requested intervention the same. Record the model version and access route, then note failures as well as successes. If one product lacks a feature, label it unavailable rather than scoring an invented result.

For an initial comparison, ask whether the scene stays recognizable after a short move. For a second test, evaluate one event and its sound. Comparing unrelated highlight clips cannot tell you which workflow will serve your project.