Mellum by JetBrains
Explore Mellum, a family of fast language models, including a next-generation model for ultra-low-latency and high-performance inference.
Estimated origin: Czechia
Added June 20, 2026
· Last analysed June 20, 2026 · via 
StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 20 June 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.
Mellum by JetBrains ships with the launch fundamentals in place, with complete legal pages, a thorough launch checklist, and well-configured email security. What needs work: missing Permissions-Policy and Content-Security-Policy.
Launched on Product Hunt on June 20, 2026. The site is served through AWS CloudFront, with a domain registered in 2001. The crawl picked up 27 technologies on this site, covering analytics, SaaS tooling, seo, and ai api. The stack includes Astro, CookieHub, and Airtable.
For context, it's running the same core stack as 553 other launches and tighter on security headers than most Product Hunt launches.
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Tech Stack (27) · Scale-up stack
| CDN |
AWS CloudFront
|
| Cloud |
Amazon Web Services
|
| DNS |
AWS Route 53
|
| Protocol | HTTP/3 |
| Security | HSTS |
| Server |
nginx
|
| Business email |
Google Workspace
(2)
|
| Meta-framework |
Astro
|
| Analytics |
Google Analytics
(2)
|
Optimizely
(3)
|
|
| Consent |
CookieHub
|
| Marketing |
Facebook Domain Verification
|
| SEO |
Google Search Console
|
Yahoo Search
|
|
| Social |
Bluesky
|
| Tag management |
Google Tag Manager
(3)
|
Infrastructure
Email Security
Storage (14)
| Name | Lifetime | Detected as |
|---|---|---|
| cf_country-region | session | - |
| https://www.jetbrains.com_oeu1781950356512r0.3564006041748222$$26613100737$$session_state | 5mo | - |
| ncountryCodeCookie | session | - |
| optimizelyEndUserId | 5mo | Optimizely |
| optimizelySession | 5mo | Optimizely |
| Key | Size | Detected as |
|---|---|---|
| optimizely_data$$oeu1781950356512r0.3564006041748222$$26613100737$$contextual_mab | 2 B | Optimizely |
| optimizely_data$$oeu1781950356512r0.3564006041748222$$26613100737$$event_queue | 134 B | Optimizely |
| optimizely_data$$oeu1781950356512r0.3564006041748222$$26613100737$$layer_states | 494 B | Optimizely |
| optimizely_data$$oeu1781950356512r0.3564006041748222$$26613100737$$session_state | 89 B | Optimizely |
| optimizely_data$$oeu1781950356512r0.3564006041748222$$26613100737$$tracker_optimizely | 1.4 KB | Optimizely |
| optimizely_data$$oeu1781950356512r0.3564006041748222$$26613100737$$variation_map | 60 B | Optimizely |
| optimizely_data$$oeu1781950356512r0.3564006041748222$$26613100737$$visitor_profile | 845 B | Optimizely |
| Key | Size | Detected as |
|---|---|---|
| countryFrom | 2 B | - |
| sentryReplaySession | 141 B | Sentry |
Readiness Breakdown How?
Performance How?
⚠ 2 images: 1 missing alt text
Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI copy signals | +5 |
| AI palette signals | +5 |
| Recognised AI builder signature | +100 |
This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.
Possibly by the same creator
Other launches that look like they came from the same person or team.