PAS™ — Platform Activation Score — Axis Intelligence Research — First Published July 21, 2026
PAS Score
8.5%
8.5 out of every 100 registered users active on any given day
High-intent niche baseline
DAU Estimate
3.5M
US + UK combined, Nov 2025 Backlinko citing Financial Times
+52% vs Jan 2025 (2.3M)
Peak PAS (Nov 2024)
20.5%
Post-election surge anomaly 4.1M DAU / 20M registered
Burst event, not steady-state
Posts / Registered User
41.9
Posts per avg registered user across all of 2025
~1 post every 8.7 days
PAS = (Estimated DAU ÷ Total Registered Users) × 100 | (3,500,000 ÷ 41,410,000) × 100 = 8.5% | DAU: Backlinko / Financial Times, Nov 2025 | Registered users: Bluesky 2025 Transparency Report | CC BY 4.0
Interpretation: An 8.5% PAS places Bluesky in the high-intent niche network bracket — consistent with Mastodon (~10%) and well below mass platforms like Instagram (~55% DAU/MAU).
The steady DAU climb from 2.3M in January 2025 to 3.5M in November 2025 is the more meaningful signal: absolute daily engagement is growing even as registered-user growth normalises post-surge. ·
Limitation: Bluesky does not publish official DAU; the numerator is a third-party estimate. Treat PAS as a floor approximation, not a certified platform metric. ·
Updated when Bluesky discloses new DAU data or publishes its 2026 Transparency Report · CC BY 4.0
Bluesky — Growth Milestones 2021→2026
Registered Users — Growth Trajectory (Millions)
Bluesky 2025 Transparency Report (Jan 29 2026) · Bluesky Series B announcement (Mar 19 2026) · Bluesky official posts — all registered account counts include federated AT Protocol Personal Data Servers
Content Output 2025 — Posts vs Media Posts (Billions)
Bluesky 2025 Transparency Report (Jan 29 2026) · 1.41B total posts = 61% of all-time; 235M media posts = 62% of all-time media · Axis Intelligence Research: avg 3.86M posts/day
Axis Intelligence Research PAS™ = (DAU est. / Registered users) × 100 · DAU estimates: Backlinko / Skyscraper / FT · Registered users: Bluesky official · First published July 21 2026 · CC BY 4.0
Monthly Website Visits — bsky.app (Millions)
SimilarWeb analytics for bsky.app · Dec 2024 peak: 154.68M (post-election surge) · Jan 2026: 118.69M (highest outside surge window) · Via socialpilot.co and limelightdigital.co.uk citing SimilarWeb
Web Traffic by Country — bsky.app (March 2026)
SimilarWeb geographic breakdown, March 2026 · via proxidize.com · US reclaimed top position after Brazil X-ban lifted in late 2024 · Jay Graber confirmed US, Japan, Brazil as top 3 markets by user count
Age Distribution of Visitors — bsky.app (Early 2026)
SimilarWeb audience analytics for bsky.app · via proxidize.com and sociallyin.com · Web traffic estimates — not internal user data · 18-24 share declined from 42% (late 2024) to ~32% as older demographics joined
Cumulative Funding — All Rounds (USD Millions)
Bluesky Series A announcement (bsky.social, Oct 24 2024) · Bluesky Series B announcement (bsky.social, Mar 19 2026, round closed Apr 2025) · Seed: TechCrunch · Total: $123M Axis Intelligence Research compilation
Content Labels by Category (2025)
Bluesky 2025 Transparency Report (Jan 29 2026) · Total 16.49M labels · 95.34% applied by automated systems · Adult + Suggestive = 86.2% of all labels · Rude, Intolerant, Threat = 100% manual review
User-Submitted Moderation Reports by Category (2025) — 9.97 Million Total
Bluesky 2025 Transparency Report (Jan 29 2026) · 9.97M reports (+54% YoY from 6.48M in 2024) · Submitted by 1.24M users = ~3% of registered base · Reports/1,000 MAU declined 50.9% Jan→Dec 2025 — proactive moderation working
Bluesky vs Competing Social Platforms — Scale Comparison (2025–2026)
Platform
Registered / Total Users
Daily Active Users
DAU/Total Ratio
Funding / Revenue Model
Architecture
Advertising
Bluesky
41.41M registered (Dec 2025)
~3.5M est. (Nov 2025)
PAS™ 8.5%
$123M venture funding
AT Protocol (federated)
None (as of Jul 2026)
X (Twitter)
~600M registered (2024)
~250M MAU (self-reported)
~40% MAU/registered
Elon Musk acquisition ($44B)
Centralized
Yes — advertising + X Premium
Threads (Meta)
~320M MAU (Jan 2025 Meta)
Not disclosed
—
Meta internal (no standalone funding)
ActivityPub (partial)
Yes — Meta ad ecosystem
Mastodon
~10M registered
~1M active (network-wide est.)
~10%
Non-profit / donations
ActivityPub (federated)
None
Bluesky 2025 Transparency Report · Meta Q4 2024 earnings (Threads) · X self-reported metrics · Mastodon network data · Axis Intelligence Research PAS™ — CC BY 4.0
Moderation Enforcement — 2025 Key Figures
2.44M
Total items removed (accounts + content) — up 104% YoY for account takedowns
Accounts removed for suspected influence operations — majority Russian state-aligned
4,327
Verified accounts total: 3,567 by Bluesky directly + 777 by 21 Trusted Verifiers
Bluesky 2025 Transparency Report (Jan 29 2026)
Legal Requests — 2025 (1,470 Total · 5× vs 2024)
Bluesky 2025 Transparency Report (Jan 29 2026) · 90.7% compliance rate for valid requests · Top jurisdictions: Germany, United States, Japan · Legal requests rose from 238 (2024) to 1,470 (2025)
AT Protocol Ecosystem — Key Scale Indicators (March 2026)
Indicator
Value
As-of Date
Source
Context
Third-party apps (weekly active)
1,000+
Mar 2026
Bluesky Series B official
Apps interoperating on AT Protocol each week
SDK downloads (monthly)
400,000+
Mar 2026
Bluesky Series B official
Developer adoption signal
Total Atmosphere public records
~20 billion
Mar 2026
Bluesky Series B official
Posts, likes, comments, interactions across all AT Protocol apps
Domain-verified handles
309,000
Dec 2025
Bluesky 2025 Transparency Report
Accounts using a personal domain as their Bluesky username
Starter Packs created (all-time)
335,000+
Early 2025
Lancaster Univ. / TU Darmstadt / City St George's peer-reviewed study
Seeded 20%+ of all follow relationships on the platform
Funding per registered user (end-2025)
$2.97
Dec 2025
Axis Intelligence Research
$123M total ÷ 41.41M users; lean vs $10–30 typical at comparable stage
Bluesky Series B announcement (bsky.social, Mar 19 2026) · Bluesky 2025 Transparency Report (Jan 29 2026) · Lancaster University / TU Darmstadt / City St George's, 2025 (Starter Packs study, 25M users analysed) · Axis Intelligence Research funding-per-user calculation — CC BY 4.0