Meshy 7.1 raises geometric detail with a new Ultra 4K mode

Meshy released Meshy 7.1 on September 10, 2026, an upgrade to Meshy 7 built around generating richer surface detail than any other image-to-3D model on the market. The company frames the release as a response to a shift already underway in 3D generative AI, where alignment and structural correctness across models have reached production quality, leaving surface detail, an engraving on armor, the scales on a dragon, the relief on a carved pillar, as the remaining gap between a generated shape and a finished asset.

The new Ultra 4K mode scales geometry generation from 2048³ to 4096³, a resolution no other 3D generative model has reached to date. Raw meshes produced by the model before simplification can reach 80 million triangles. Meshy achieved the jump by scaling up its geometry representation and generation backbone, paired with mesh extraction and simplification algorithms built to handle the higher face count in a space that spans billions of voxels.

Measuring detail

Alongside Ultra 4K, Meshy built a Detail Richness benchmark to quantify how much surface detail a generated model carries. The method renders each model from multiple viewing angles at a fixed screen resolution, then measures the share of the surface whose orientation varies enough within a single pixel to require anti-aliasing, the same graphics technique that smooths jagged edges in video games. A flat surface needs no anti-aliasing; a surface carrying detail finer than the pixel does, so the fraction of the model that needs it becomes a direct measure of surface richness at that resolution.

Meshy built the benchmark’s input set from images with rich structural detail but simple, single-color textures, similar to a high-precision 3D print pattern, to remove the ambiguity between texture and geometry that colored, textured input images introduce.

Across Tripo 3.1, Hunyuan3D 3.1, Rodin 2.5 and Hi3D 3.0, Meshy 7.1 led the Detail Richness benchmark at every render resolution tested, all models run at their maximum quality settings. At 1024 resolution, Meshy 7.1 kept 53.5% of the visible surface detailed, 2.1 points ahead of Rodin 2.5 at 51.4%. At 2048 resolution, it kept 37.4%, 2.4 points ahead of Rodin 2.5’s 35.0%. At 4096 resolution, where structure at engraving scale comes into view and every model loses most of its detailed surface, Meshy 7.1 held 23.1% against Hi3D 3.0’s 21.9%, the closest result among the five. Measured object by object at the finest resolution, Meshy 7.1’s win rate against the other four models ranged from 56% to 98%.

Meshy published three Ultra 4K examples rendered in clay to isolate geometry from texture: an orc warrior showing woven cord and a frayed, torn skirt edge; a wooden hand cannon with raised grain rings around barrel knots and stitched rows on its leather strap; and an armored war beast combining graded scales, a studded face emblem and a knotted rope holding a bone in place. Meshy said a model that only reproduces overall shape correctly would still generate the cannon, the orc and the beast, but not the stitching, the weave or the scales.

Without noise

Because surface variation alone doesn’t distinguish true geometric detail from random noise, Meshy also tracked how organized that variation is, since creases, ridges and engraved lines bend a surface consistently while noise bends it randomly. Comparing the same input character generated at Standard, Ultra 2K and Ultra 4K settings, Meshy found detail sharpening at higher resolution without a corresponding rise in noise on flat surfaces.

Meshy also found that pushing geometry resolution beyond 4096³ is unlikely to add benefit users can perceive, since a 4096-by-4096 render already detects surface variation at the limit of human vision. During benchmark calibration, the company found that the 3D compression format commonly used for Web3D streaming introduced compression noise that produced a false increase in Ultra 4K Detail Richness scores despite barely visible visual loss, and it evaluated all models on uncompressed geometry as a result.

Availability
Meshy 7.1 began rolling out in the Meshy workspace on September 10, 2026, and is reaching all users progressively. The model is open to all registered users, while Ultra 2K and Ultra 4K resolutions, along with downloads of models generated by Meshy 7.1, remain limited to subscribed users. Ultra 2K supports both single-view and multi-view generation; Ultra 4K is available for single-view generation only. Meshy said the Detail Richness benchmark introduced with this release will also be published separately as a standalone tool.