Cypress, a new image model on Arena.ai
Today I came across an image model called Cypress. I spend quite a bit of time experimenting with models on Arena.ai. I particularly enjoy it when an unknown model appears under a codename, giving you the chance to test it without knowing who made it.
I had an interesting result from it. I searched for Cypress to see whether anyone knew what it was, but found almost nothing.
The only reference I found was buried on an AI-generated news site. It mentioned an Arena.ai model using the alias Cypress to generate an image a few days ago.
At least one other person had encountered it.
I managed to get Cypress again in arena.ai's battle mode, giving it something deliberately difficult. I wanted an image that looked like an ordinary British high street with a small failure in reality. It should reveal a glimpse through the simulation rather than a portal into somewhere else.
My prompt was:
A candid photograph of an ordinary British high street on a cold, overcast winter afternoon, but reality has developed a small fault.
At first glance everything should look completely mundane and believable: pedestrians in coats, a bus stop, a charity shop, a café, parked cars, wet pavement and Christmas lights hanging across the street.
In the centre of the image, a woman has stopped walking because she has noticed something impossible. About two metres in front of her is a narrow vertical tear in reality, no wider than an open doorway.
Through the tear we do not see another place. We see the same street, from the same position, at the same moment, but from outside the simulation.
On that side, the buildings are unfinished geometric shells extending into darkness. Pedestrians continue below the pavement as incomplete human forms. The sky ends abruptly a few metres above the rooftops and is held up by a vast black structure covered in tiny maintenance lights. Far in the distance, enormous indistinct human silhouettes appear to be observing the constructed world.
The difficult part: objects crossing the boundary must exist correctly in both realities. A man carrying a transparent umbrella is halfway through the tear. On the normal side he is completely photorealistic; across the boundary the same man and umbrella become an unfinished underlying representation of themselves, while preserving exactly the same pose and geometry.
Nobody except the woman has noticed.
No holograms, no floating computer code, no cyberpunk neon, no futuristic city, no obvious VR headset imagery. The simulated world should look completely ordinary. The horror comes entirely from seeing that ordinary reality has an edge.
Documentary street photography, understated, unsettling rather than spectacular, natural grey daylight, slight photographic imperfections, 35mm lens. It should look like someone accidentally photographed something they were never supposed to see.
This is what the Cypress image model produced on arena.ai:
Cypress - A candid photograph of an ordinary British high street on a cold, overcast winter afternoon, but reality has developed a small fault...
A close-up crop of the tear/portal
Cypress understood part of the idea. The street continues through the boundary into another representation of itself rather than becoming a completely different world. The person crossing the boundary also changes with it while keeping roughly the same position and geometry.
It also did exactly what I told it not to do.
The tear in reality became a literal doorway. The underlying simulation became mostly a dark, monochrome version of the street. It ignored the sky ending above the buildings and the machinery beyond it.
I asked it not to make a portal and it made a portal.
One image is not much of a test. Anonymous models on Arena do not necessarily stay anonymous for long, which is part of what makes these early encounters interesting.
For now, I know that Cypress exists. At least one other person has encountered it, but I have no idea who made it.
The only other reference I found was buried in an unusual AI-generated news site. An article dated 31 August 2026 credits an illustration to an Arena.ai model using the alias cypress.
I will keep trying it when it appears. From my two tests so far, it looks promising, but two images are not enough to judge the model properly.
I often try to guess the provider or model family from the codename, but Cypress does not give much away. It is also difficult to search for, with most results referring to the tree or the web testing framework.