Meat Grader
Predicted Grade: Prime
Confidence: 92%
Requires Human Review: No
Reasoning Summary: The uploaded image presents a ribeye cross-section with clearly abundant and well-dispersed marbling that strongly aligns with the traits described for Prime grade. The marbling network is dense, with fat interwoven throughout the lean, leaving no substantial unbroken lean regions. This pattern is consistent with the rubric's description for Prime and matches high-confidence reference examples. The color and texture also appear bright and fine-grained.
Marbling Estimate: Abundant and dense—fine, closely spaced streaks present throughout the ribeye muscle
Fat Distribution: Evenly distributed intramuscular fat; visible across both central and peripheral muscle sections
Color Notes: Bright cherry-red lean, consistent with high-quality beef; fat remains bright white
Texture Notes: Fine muscle texture, with no coarse or patchy irregularities visible
- Dense and frequent thin white marbling streaks are distributed throughout the ribeye muscle
- Very few large, uninterrupted lean areas—marbling interrupts the muscle consistently
- Fat flecks are fine and evenly distributed, closely matching Prime reference images (such as 00-usda-prime-ref-1.png and 00-usda-prime-ref-2.png)
- Marbling extends through both the central and outer portions of the ribeye—patterns align with abundant marbling traits
- As with all photo-based evaluations, true carcass firmness, maturity, and anatomical exactness cannot be confirmed
- Lighting and trimming might exaggerate or reduce the perceived marbling slightly
- Grade assessment is limited to this view and excludes factors like muscle firmness or external fat
Predicted Grade: Choice
Confidence: 90%
Requires Human Review: No
Reasoning Summary: The steak shows moderate marbling – more than Select, but not as dense or evenly distributed as Prime. The fat streaks are clearly present and well distributed, but there are large sections of uninterrupted lean muscle, matching classic Choice grade visuals (see reference images 5-8, 14, 15). The marbling does not reach the density or fineness required for Prime, nor is it sparse enough for Select. Color and texture are appropriate and typical for Choice, with a bright cherry-red lean and fine muscle structure.
Marbling Estimate: Moderate; fat streaks spaced apart across the muscle, not densely packed.
Fat Distribution: Marbling is visible in most zones, with some gaps; distribution is uneven but present throughout.
Color Notes: Bright cherry-red lean, indicating freshness. No discoloration or oxidation seen.
Texture Notes: Fine grain muscle texture; no coarse separation or patchiness.
- Moderate marbling with visible white fat streaks spaced throughout the ribeye muscle.
- Lean muscle areas are continuous in several regions, not heavily broken up by fat.
- Marbling appears more separated and less dense than Prime, but more than Select.
- Several areas in the muscle remain mostly uninterrupted red lean.
- Retail cut position may vary from true grading location (12th–13th rib).
- Image quality is generally good, but exact marbling fineness is slightly less distinct than in some references.
- Marbling distribution might vary through the rest of the cut not shown here.
Predicted Grade: Select
Confidence: 93%
Requires Human Review: No
Reasoning Summary: The marbling is clearly sparse, with only minimal streaks of intramuscular fat—similar to reference images 02-usda-select-ref-1.png and 14-marbling-small-ref.png. There are large unbroken lean regions and the faint, scattered presence of marbling, which matches the 'Select' criteria in the rubric. There is no evidence of the moderate or dense marbling present in Choice or Prime grades.
Marbling Estimate: Sparse (slight) marbling, composed of small, thin, and widely spaced streaks with extensive lean muscle dominating the appearance.
Fat Distribution: Marbling is isolated and not interconnected, with fat mostly limited to the periphery and small areas within the muscle.
Color Notes: Lean is a bright to moderate cherry-red; typical and supportive of healthy ribeye muscle but not influencing the grade.
Texture Notes: Muscle texture appears fine; no coarse or patchy grain, consistent with expectations for select beef, but texture is not the determining factor.
- Lean muscle is dominant across the steak, with large uninterrupted red areas.
- Marbling is sparse and appears as thin, small, and widely spaced fat streaks.
- Few, mostly isolated fat flecks within the ribeye muscle.
- No network of interconnected or dense marbling; fat is not evenly distributed throughout.
- Photos cannot capture all carcass characteristics (maturity, firmness, etc.).
- Lighting, image exposure, and trimming may alter the visual perception slightly.
- Image is clear, but final grading should be confirmed by a trained human if precise certification is required.