Genie 4: A new generation of world simulation

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Today, we are announcing Genie 4, our new world model, which unlocks unprecedented realism and improves real-time interactive simulation. Genie 4 is natively multimodal, enabling audio-like music, ambient noises, and interactive dialogue to be simultaneously generated with the world.

The Genie 4 model incorporates and builds on capabilities from the Gemini family: Gemini Omni anchors the simulations in real-world appearance and behavior, while other Gemini models provide the complex reasoning needed to help maintain a simulation’s coherence and continuity.

With this foundation, you can set an event in motion, and Genie 4 simulates what happens next: how the world responds, how it sounds, and how the people in it move, react, and speak.

Understanding and simulating the world is a crucial aspect of building AGI. Genie 4 advances our ability to create safe, infinitely variable simulations that can help with everything from developing training environments for robots and agents to unlocking the creation of new interactive experiences.

Genie 4 delivers enhanced photorealism, fluid movement, and native audio. All accompanying sounds featured above are produced directly by Genie 4.

The following are recordings of real-time interactions from Genie 4, where users use standard keyboard controls for navigation and camera control, and text prompts to steer the scene as it evolves.

With Genie 4, you can use natural language to modify a simulation in real-time — like changing the weather, moving the camera, or introducing a new person or object — and Gemini will contextually adapt your prompt to match the surrounding scene. Between your inputs, Gemini also monitors and steers the scene to keep the world progressing cohesively.

Prompt: Use the reference image as the exact first frame and visual basis for the scene. Preserve the same floating rectangular platform, weathered concrete edges, wild grasses, ferns, twisted small tree, warm glowing amber sphere, and the same middle-aged man in a loose brown suit playing a brass saxophone.

A cinematic, highly naturalistic documentary scene, photographed on 16mm film with subtle grain, soft photographic detail, extremely low contrast, muted natural colors, lifted shadows, gentle highlights, and soft diffuse overcast light. Absolutely no HDR, no dramatic contrast, no glossy digital rendering, no artificial cinematic lighting.

The platform floats in the middle of a vast, quiet lake surrounded by distant misty forests. Thin layers of fog drift above the water. The sky is pale blue-gray and overcast, with a soft, almost monochromatic atmosphere. The warm amber sphere provides a delicate contrasting glow, softly illuminating the surrounding vegetation and reflecting in the lake.

Begin with a slightly closer view of the saxophone player than in the reference image, while keeping the platform, glowing sphere, tree, and surrounding lake visible. The man continues playing his saxophone naturally, with subtle breathing, finger movements, and gentle body swaying.

The camera moves independently and can freely explore the entire environment, gliding smoothly over the water with gentle, controlled movement. The camera is not attached to the man or the platform. Maintain realistic spatial continuity and natural camera movement.

Everything must remain photographic, physically believable, documentary-like, extremely low-contrast, and softly desaturated throughout the entire experience.

One continuous shot. Natural lake ambience, distant wind, soft water movement, and realistic saxophone sound. No background music beyond the instruments physically present in the scene.

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Environment prompt: A wide, sun-drenched hilltop meadow filled with tall green grass and scattered purple, white, and yellow wildflowers swaying in a warm breeze. Low green shrubs dot the right side of the field while distant blue-green rolling hills stretch along the left horizon beneath a bright, partly cloudy sky.

Character: Winding in sweeping S-curves through the center of the grassy meadow from the immediate foreground far into the distance is a long, continuous stream of glossy bubblegum-pink satin fabric. The shimmering pink cloth billows, ripples, and lifts softly above the wildflowers like a flowing river of silk as the wind moves beneath its folds.

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Environment prompt: A sweeping aerial view over the vast, frozen landscape of Antarctica, featuring endless snow-covered glaciers, jagged icy mountain peaks, and sculpted blue icebergs bathed in crisp polar sunlight under a clear, pale blue sky. Numerous hot air balloons dot the horizon at varying altitudes, with a large cream, red, and blue striped balloon floating prominently in the mid-distance above the ice sheet.

Character prompt: Shot from a first-person POV standing inside the woven wicker basket of a flying hot air balloon, looking out over the leather-trimmed basket edge on the right side of the frame, where black padded support poles, metal rigging chains, and the dark base of the balloon canopy overhead frame the drifting polar vista.

Pushing the frontier in realism for physics and human action

Genie 4 introduces a new standard of realism to real-time interactive simulation. Built on an advanced physical understanding of the world, Genie 4 simulates real-world physics scenarios, such as aerodynamics, collisions, and more.

The most dramatic leap is how Genie 4 simulates people, creating characters that move naturally, respond organically to their environments, and can be interactively steered in real-time.

Environment prompt: A sunlit outdoor courtyard featuring a weathered stone plinth set against a soft-focus background of lush green garden foliage and clear blue sky, bathed in bright, warm afternoon sunlight that backlights airborne droplets in crisp slow motion.

Character prompt: A whole, glossy green-striped watermelon rests in the center of the stone plinth.

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Prompt: A macro close up of a maple seed falling from the tree into the grass

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Prompt: A crowded rural Japanese train station in the 1980s, packed with passengers waiting along the platform. The only railway inspector in a dark navy uniform stands close to the camera, observing the scene. A long, deep-red local train with many carriages occupies the railway track closest to the camera POV, stretching across the frame and extending far into the distance. The train is clearly visible in the immediate foreground, not on a distant track. People fill the platform naturally, standing, walking, boarding and waiting with luggage. Lush green mountains, cedar forests and humid summer haze surround the station. Authentic 1980s Japanese atmosphere, cinematic 35mm documentary photography, realistic perspective, asymmetrical composition, natural lighting, subtle film grain, photorealistic textures. The station must look genuinely busy, with a dense crowd of visible people throughout the platform. The red train must be on the nearest track, dominating the scene. No empty platforms, no distant train, no sparse crowds, no centered symmetrical composition.

Modeling how the world sounds

Genie 4 is our first real-time world model to generate audio natively. Every world carries the ambient sound of its own setting, from wind in the trees to waves crashing at the beach.

The true frontier, however, is human speech. Genie 4 introduces interactive dialogue that adapts on the fly. Characters converse and react to your inputs or events in the world, all in real-time.

Prompt: Create a fully three-dimensional immersive stained-glass landscape that feels like a handcrafted crystal window brought to life. The world should be explorable, as if the camera can move freely through a giant 3D stained-glass environment. The entire scene must have a stained-glass / crystal-window look: translucent colored glass, dark lead outlines, glowing layered panels, volumetric depth, and artisanal glass textures.

Show a beautiful landscape with a flowing river running through green fields, flowers in the foreground, trees, distant mountains, clouds, and a radiant sun in the sky. The river should feel like flowing translucent blue glass, the flowers like upright stained-glass sculptures, the grass and trees like layered colored-glass forms, the mountains like stacked glass panels, and the sun like a luminous circular stained-glass element. Everything must feel spatial, cohesive, luminous, and handcrafted, with depth and the sensation that the viewer can move through it in three dimensions.

The camera should be able to travel through the scene as if walking or gliding inside this 3D stained-glass world. Keep the world beautiful, magical, and fully consistent in style.

Absolutely everything must remain made of stained glass or crystal at all times, including the grass, the water, the sky, the clouds, the flowers, the trees, the mountains, the sun, and all visible surfaces. Do not introduce any natural real-world textures. No real grass, no real water, no normal sky, and no realism outside of the stained-glass universe.

No text, no modern objects, no realism outside of the stained-glass universe

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Prompt: Immersive first-person POV, we only see the big strong hands of the knight rider tightening the reins, dragon and wings. Photorealistic, ultra-realistic action-camera footage seen entirely through the rider's own eyes while riding a gigantic black dragon at 140 km/h through a mountainous dragon-racing course with many dragons and riders. Other dragons are mounted by other knights.

The camera IS the rider's eyes. The camera is attached to the rider's head, facing forward, and moves naturally with the rider's head. The rider is the viewer. The rider's face, head, torso, body, and full silhouette are NEVER visible. No third-person shots, no external camera angles, no cutaways, no views of the rider from behind or from the side.

Only show what the rider would naturally see: the dragon's neck and occasional parts of its upper back near the bottom edge of the frame, the rushing landscape, two other dragons and their riders racing alongside and ahead, and a huge castle with catapults on its walls. A standard is carried naturally by the rider and may occasionally appear at the edge of the frame, but never blocks the view or fills the frame.

The camera maintains this exact first-person perspective throughout the entire flight. Aggressive high-speed racing, powerful realistic wingbeats, aerodynamic weight, intense wind, natural head movement, subtle camera vibration, wide-angle action-camera distortion, realistic motion blur, cinematic natural lighting, physically believable movement.

Strict visual constraints: true first-person rider POV, no visible rider, no third-person perspective, no external tracking shot, no drone camera, no over-the-shoulder shot, no cinematic cutaways, no camera floating outside the rider's body, no CGI appearance, no video game look, no 3D-render aesthetic.

Audio: deep thunderous wingbeats, roaring high-altitude wind gusts, distant volcanic rumble, and crackling flame embers.

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Prompt: A cinematic macro close-up from a 1995 Hong Kong indie romantic drama, shot on 35mm film. Two young, unconventional-looking Korean lovers in their 20s ride a motorcycle across a bridge on the outskirts of Hong Kong at dawn.

The male driver wea