Eerie mist surrounds the ruins of an old stone structure in England, creating a desolate a, by Damien Wright on Pexels

Introducing Meridian 4: A New Horizon for Motion Synthesis

March 4, 2026
by Ines Kowalczyk

Watch the reel Try Meridian 4

Meridian 4 is the first of a new generation of foundation models trained by Orrery on infrastructure built for large-scale multimodal training. It is a marked improvement in fidelity, consistency, and motion over Meridian 2, and a step toward general world models.

Every clip on this page was generated with Meridian 4, with no post-processing.

Side profile of a woman with short hair and striking earrings, captured in bokeh lighting , by vii wolves on Pexels orrery
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Prompt: Reflections of a passenger on the window of a train moving at hyper-speed through a coastal city at dusk.

Trained jointly on video and stills, Meridian 4 will power Orrery’s Text-to-Video, Image-to-Video, and Text-to-Image tools, existing control modes such as Motion Paint, Advanced Camera Rigs, and Sequence Mode, as well as upcoming tools for finer control over structure, style, and motion.

Meridian 4 ships with a new set of safeguards, including our rebuilt in-house visual moderation system and C2PA provenance standards.

A mystical foggy morning landscape with a curved road and sunrise illuminating the misty c, by Septimiu Lupea on Pexelsorrery
Breathtaking view of a Norwegian fjord surrounded by lush cliffs and snow-capped mountains, by Thea Cintia Paixão da Silva on Pexels orrery
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A captivating view of the Bosphorus strait with the Istanbul skyline in the background, sh, by Meriç Tuna on Pexels orrery
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Misty mountain landscape in Chechnya with dramatic clouds and lush greenery., by Zaur Takhgiriev on Pexelsorrery
A breathtaking view of misty mountains and pine forests at sunrise., by Johannes Plenio on Pexelsorrery
Scenic view of snow-covered mountains and a frozen sea in Apatity, Russia., by Katerina Zaytseva on Pexelsorrery
Scenic view of sunset over mountains in Limone Sul Garda, Italy, with dramatic lighting an, by Erik Schereder on Pexels orrery
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Breathtaking view of Mars-like volcanic terrain under warm sunrise light in Tenerife's nat, by Marek Piwnicki on Pexels orrery
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A tranquil misty dawn over forested hills, capturing nature's serene beauty., by Barış Türköz on Pexelsorrery
Majestic mountainous landscape with a river winding through a sunlit gorge, showcasing nat, by David Zherdenovsky on Pexelsorrery

Frame-level temporal control

Meridian 4 was trained on densely captioned footage, which makes imaginative transitions and precise key-framing of individual elements in a scene possible.

Serene misty morning over the green hills of Sligo, Ireland, shrouded in atmospheric fog., by atelierbyvineeth . . . on Pexels
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Prompt: An extreme close-up of dew on a grass blade. The camera pulls back to reveal green hills beyond the valley.

Photoreal human performance

Meridian 4 excels at expressive human characters with a wide range of actions, gestures, and emotions, which opens up new storytelling options.

Close-up nighttime portrait of a bearded man wearing eyeglasses with bokeh backdrop., by Nandu Vasudevan on Pexels
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Prompt: A stagehand pauses under a single work light, breath visible in the cold air.

Built with working filmmakers

Meridian 4 is a collaboration between our research team, engineers, and a resident group of directors. It was shaped to interpret a broad range of styles and cinematic language.

Eerie silhouettes in a foggy alleyway in Ankara, captured at night., by Eser Tekin on Pexels
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Prompt: A view down an alley as two figures cross a rundown city at night, lit by one flickering street lamp.
A creative portrait of a woman illuminated by neon lights with a dramatic red glow., by Finn Semmer on Pexelsorrery
A captivating portrait of a woman dancing at night in a vibrant Buenos Aires street., by Maive & Nahuel Fotografía on Pexels orrery
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Silhouette of a person against city streetlights at night, creating a moody urban atmosphe, by Aritra Hazra on Pexelsorrery
Portrait of a woman under umbrella with neon lights in the city at night., by Anastasia Bekker on Pexelsorrery
Artistic portrait of a woman with dramatic red lighting creating a moody ambiance., by Cihan Karacayir on Pexels orrery
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A woman in a red coat standing by a window in dim, dramatic lighting., by Daniil Kondrashin on Pexels orrery
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Young man in Times Square, New York City at night, surrounded by bright billboards and cit, by Renan Tagliaferro on Pexelsorrery
A man with facial hair stands stylishly outdoors at night, illuminated by dim lights., by Sindre Fs on Pexelsorrery

Studio customization

As part of the Meridian family, we have been working with production companies and media organizations to build custom versions of Meridian 4. Customization allows for more stylistically controlled and consistent characters, and targets the specific artistic and narrative requirements of a project, among other features. If your company is interested in fine-tuning and custom models, reach out using the form below:

Request information
A silhouette of a man standing under dramatic clouds with light rays shining through., by Jay Satriani on Pexels
Prompt: A lone figure holds still as light breaks through the roof of a cavern.
Stunning sunset view through a natural rock arch in a grassy landscape under a vibrant sky, by Arek Socha on Pexels
Prompt: Low sun through a rock arch on an empty plain of grass at golden hour.
Dramatic geological formations under warm light in Tenerife's arid wilderness., by Marek Piwnicki on Pexels orrery
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Prompt: Dawn crawls across a cracked lava field as the last of the mist burns off.

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A stunning view of a rocky landscape at sunset, with calm waters and a vibrant sky., by Pixabay on Pexels orrery / Lanternhouse

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Stylish woman in fur coat under moody red lights at night., by Diogo Cacito on Pexels orrery / Vesper Fest

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Dramatic black and white scene of Buddhist stupas with mountain backdrop in Spiti Valley, , by Mangalam Bhargava on Pexels orrery / Northfleet

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