Lepton AI leads in npm + PyPI downloads at 7.1K/mo. Compare Grammarly, Lepton AI, Neptune AI across package adoption, contributors, funding, and discussion signals.
At a glance
Current leaders
Scan the current leaders here, then use the table below for the full comparison.
Downloads/mo
Lepton AI
Next: Neptune AI
7.1K
Dependents
Neptune AI
Next: Grammarly
59
Code adoption
Neptune AI
Next: Grammarly
39
Disclosed funding
Grammarly
Next: Lepton AI
$400M
Sources: npm, PyPI, GitHub, Crunchbase, Hacker News, Reddit, and job boards. Methodology →
Comparable data synced April 5, 2026Comparison table
Core adoption signals first, supporting context second. Gaps stay visible instead of being rounded away.
← Scroll to compare all 3 companies →
| Metric | Updated Apr 5 | Lepton AI Updated Apr 5 | Updated Apr 5 |
|---|---|---|---|
Adoption & EcosystemThese signals carry the most weight for a production default. | |||
| Momentum score | 45 Moderate | 28 | 21 |
| Total package downloads (30d)Source: npm + PyPI registriesUpdates: DailyNote: Sum of npm and PyPI; excludes other package managersMethodology → | 465 | 7.1K | 2.6K |
| npm registry downloads (30d)Source: npm registryUpdates: DailyNote: Includes all package installations including CI/CD pipelines and mirrorsMethodology → | 465 | 0 | 0 |
| PyPI registry downloads (30d)Source: PyPI (pypistats.org)Updates: DailyNote: Includes all package installations including CI/CD pipelines and mirrorsMethodology → | 0 | 7.1K | 2.6K |
| Package dependentsSource: npm + PyPI registriesUpdates: DailyNote: Counts dependent packages across tracked npm and PyPI packages.Methodology → | 8 npm 8 · PyPI 0 | 8 npm 0 · PyPI 8 | 59 npm 0 · PyPI 59 |
| Active contributors/daySource: GH ArchiveUpdates: DailyNote: Tracks designated public repos per company, not all company GitHub activityMethodology → | 0 | Not tracked | Not tracked |
| Code adoption (repos)Source: ecosyste.ms Packages APIUpdates: DailyNote: Approximate count; excludes forksMethodology →Exclusive | 9 | 1 | 39 |
Community & AttentionHelpful context, but weaker than the adoption rows above. | |||
| GitHub starsSource: GitHub GraphQL + GH ArchiveUpdates: DailyNote: Stars are bookmarks - a popularity signal, not a usage indicatorMethodology → | 962 | Not tracked | Not tracked |
| Hacker News mentions (30d)Source: Hacker News (Algolia API)Updates: DailyMethodology → | 0 | 0 | 0 |
| HN discussion shareSource: Hacker News (Algolia API)Updates: DailyNote: Share of Hacker News mentions within the company's primary category.Methodology → | 55.9% | Not tracked | Not tracked |
| Reddit mentions (30d)Source: Reddit (search API)Updates: DailyNote: Counts posts and comments mentioning the company by name.Methodology →Exclusive | 1 | Not tracked | Not tracked |
Company DurabilityCapital and financing history provide context, not the whole call. | |||
| Total disclosed fundingSource: Public records / manual researchUpdates: WeeklyMethodology → | $400M | $10M | $10M |
| Last funding round | Venture Nov 2021 | Seed Nov 2023 | Series A Apr 2022 |
Data TrustCoverage and freshness stay visible instead of being hidden by the narrative. | |||
| Data confidenceSource: AI-BuzzUpdates: DailyNote: Composite score based on field completeness, metric freshness, and identifier coverage.Methodology → | Excellent (89%) | Excellent (92%) | Excellent (85%) |
| Signals trackedSource: AI-BuzzUpdates: DailyNote: Number of tracked non-null signals in the core compare dataset.Methodology → | 4/7 adoption, attention, and trust signals | 2/7 adoption, attention, and trust signals | 2/7 adoption, attention, and trust signals |
| Latest sync | Apr 5, 2026 | Apr 5, 2026 | Apr 5, 2026 |
Verdict
Neptune AI is the closest challenger, but the decision still depends on whether you care most about current footprint, durability, or upside.
Current adoption leader
Lepton AI has the largest tracked package footprint at 7.1K/mo.
Code adoption leader
Lepton AI also leads on tracked repository imports at 1 repos.
Funding cushion
Grammarly has the deepest disclosed funding base at $400M.
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npm+PyPI downloads/mo: Lepton AI 7.1K vs Neptune AI 2.6K vs Grammarly 465. code adoption repos: Neptune AI 39 vs Grammarly 9 vs Lepton AI 1. Data as of April 5, 2026. Source: AI-Buzz Developer Adoption Index, ai-buzz.com/compare/grammarly-vs-lepton-ai-vs-neptune-ai. Accessed April 5, 2026.
