How many unique avatars are possible per avatar style?

The number below is the size of the seed-driven output space for each style at its default configuration: how many distinct avatars the seed can produce while every other option is left untouched. The count mirrors what the renderer actually does:

• Variant pick per component. Each visible component contributes one variant choice. Variants with weight: 0 are excluded because the PRNG never picks them (unless every variant has weight: 0, in which case the PRNG falls back to an unweighted pick across all of them).
• Probability. A component whose probability is strictly between 0 and 100 adds the "not rendered" branch as one extra outcome. A component with probability: 0 collapses to a single (always-absent) outcome.
• Per-component transforms. rotate, scale, and translate ranges in the definition are sampled with 4-decimal precision per component reference, so a [min, max] range contributes round((max - min) × 10000) + 1 distinct values.
• Color palettes. Color groups are evaluated jointly: notEqualTo strips the picked hex values of the referenced groups (with the renderer's "fall back to full palette when filtering empties" rule), and contrastTo reduces to a single, deterministic pick.
• Seed-derived initials. When a style renders the initial or initials variable, each output letter ranges over the Unicode \p{L} category (about 140,000 distinct uppercased characters), and initials emits up to two letters per seed.

User-supplied options (custom color palettes, variant whitelists, additional backgrounds, flip, rotate, scale, translate, borderRadius, ID randomization, …) raise the count further beyond what is reported here.

Style ↑	Unique Avatars
Adventurer	5,248,152,000
Adventurer Neutral	280,800
Avataaars	121,257,077,760,000
Avataaars Neutral	13,104
Big Ears	1,372,815,360,000
Big Ears Neutral	510,720
Big Smile	479,232
Bottts	9,430,344
Bottts Neutral	24,948
Croodles	108,241,920
Croodles Neutral	2,592
Disco	3,645
Dylan	5,040
Fun Emoji	1,350
Glass	≈ 2.29 × 10⁴⁰
Glyphs	245
Icons	2,190
Identicon	319,333
Initial Face	≈ 5.05 × 10³³
Initials	374,324,455,026
Lorelei	51,239,485,440
Lorelei Neutral	606,528
Micah	1,005,082,214,400
Miniavs	174,960
Notionists	235,572,480,000
Notionists Neutral	468,000
Open Peeps	231,336,000
Personas	169,414,560
Pixel Art	≈ 1.13 × 10¹⁶
Pixel Art Neutral	4,769,280
Rings	≈ 3.57 × 10⁴³
Shape Grid	≈ 1.44 × 10¹⁸
Shapes	≈ 1.30 × 10⁶⁸
Stripes	≈ 6.89 × 10¹⁸
Thumbs	≈ 1.84 × 10⁵¹
Toon Head	18,750,000
Triangles	618,475,290,624

If a number looks wrong, please open a discussion on GitHub.