---
title: "Syntax.fm Observed Sponsors & Category CPM Benchmark (2026 Estimate) | SponsorRadar"
canonical_url: "https://www.sponsorradar.io/#pricing"
markdown_twin_url: "https://www.sponsorradar.io/#pricing.md"
category: "Full-Stack Web Development (Sentry)"
rack_cpm_usd: 56
floor_3flight_cpm_usd: "LOCKED ($0 Email)"
est_monthly_spend_usd: 39200
---

# Syntax.fm Observed Sponsors & Category CPM Benchmark (2026 Estimate)

> **Answer-First Summary**: Public sponsorship index for Syntax.fm in Full-Stack Web Development (Sentry) (13 brands observed renewing 3+ times). Category CPM figures (~$56 CPM / ~$9,800 Verified placements average **$56 Rack CPM** vs. **3-Flight Floor CPM: Locked ($0 Email)** across **~$39,200/month** tracked spend.

## 1. Live Deterministic Benchmark & KPI Baseline (SponsorRadar)
Pitch the buyer, not dead inboxes. 109 Verified Buyer & Agency Desk Rows • Save $2,400 overpay with -18% 3-flight floor CPMs.

| Metric | Verified Baseline | Target Post-Remediation |
| :--- | :--- | :--- |
| **Page-Specific Ad Rate & Spend** | $56 Rack CPM (~$39,200/mo) | 3-Flight Floor CPM: Locked ($0 Email) |
| **Repeat Renewal Score** | 97/100 | 3+ Repeat Bookings |
| **Est. Monthly Ad Spend** | $1,340,000 | Across Tracked Shows |
| **Rack vs. 3x Floor CPM** | $49 / $40 | -18% Negotiated 3-Flight Floor |
| **Host-Read CTR Lift** | 2.0% CTR | ~$2.00 Implied Floor CPC |

## 2. Production Remediation Diff
```diff
What we found: Paying published media-kit rack rates costs +18% to +28% more than the negotiated 3-flight agency floor, while cold-emailing generic info@ addresses gets a 1.1% reply rate.
How SponsorRadar pays for itself on 1 booking: Unlocks all 109 Verified Buyer & Agency Desk Rows (.CSV), the negotiated CPM floor ledger (.CSV), and ready-to-send counter-offer & pilot scripts (.EML).
```

## 3. Related Verified Benchmarks & Playbooks
- [Founders Podcast Observed Sponsors & Category CPM Benchmark (2026 Estimate)](https://www.sponsorradar.io/seo/founders-podcast-sponsors-and-cpm-rates) ([.md](https://www.sponsorradar.io/seo/founders-podcast-sponsors-and-cpm-rates.md)): Public sponsorship index for Founders Podcast in Biographies of Great Entrepreneurs (12 brands observed renewing 3+ times). Category CPM figures (~$76 CPM / ~
- [Refactoring Observed Sponsors & Category CPM Benchmark (2026 Estimate)](https://www.sponsorradar.io/seo/refactoring-luca-sponsors-and-cpm-rates) ([.md](https://www.sponsorradar.io/seo/refactoring-luca-sponsors-and-cpm-rates.md)): Public sponsorship index for Refactoring in Engineering Management & Dev Productivity (12 brands observed renewing 3+ times). Category CPM figures (~$64 CPM /
- [The Changelog Observed Sponsors & Category CPM Benchmark (2026 Estimate)](https://www.sponsorradar.io/seo/changelog-sponsors-and-cpm-rates) ([.md](https://www.sponsorradar.io/seo/changelog-sponsors-and-cpm-rates.md)): Public sponsorship index for The Changelog in Open Source, Systems & Software Craft (11 brands observed renewing 3+ times). Category CPM figures (~$57 CPM / ~
- [Dense Discovery Observed Sponsors & Category CPM Benchmark (2026 Estimate)](https://www.sponsorradar.io/seo/dense-discovery-sponsors-and-cpm-rates) ([.md](https://www.sponsorradar.io/seo/dense-discovery-sponsors-and-cpm-rates.md)): Public sponsorship index for Dense Discovery in Design Systems, Web Craft & Creative Tech (9 brands observed renewing 3+ times). Category CPM figures (~$49 CP
- [Superhuman AI Newsletter Observed Sponsors & Category CPM Benchmark (2026 Estimate)](https://www.sponsorradar.io/seo/superhuman-ai-news-sponsors-and-cpm-rates) ([.md](https://www.sponsorradar.io/seo/superhuman-ai-news-sponsors-and-cpm-rates.md)): Public sponsorship index for Superhuman AI Newsletter in Enterprise AI Adoption & Productivity (16 brands observed renewing 3+ times). Category CPM figures (~
- [DTC Health, Biohacking & Sleep Podcast Sponsors (AG1, Eight Sleep, LMNT, WHOOP)](https://www.sponsorradar.io/seo/dtc-health-and-wellness-podcast-sponsors-3x-renewed) ([.md](https://www.sponsorradar.io/seo/dtc-health-and-wellness-podcast-sponsors-3x-renewed.md)): Comprehensive 2026 media-buying ledger for Health & Performance. Tracks $3.47M in verified monthly creator spend at a $43 blended CPM across 3x+ renewed podca
- [How Media Buyers Track Competitor Podcast Ad Spend, Vanity URLs & 3x Renewals](https://www.sponsorradar.io/seo/how-to-track-competitor-podcast-ad-spend-and-promo-codes) ([.md](https://www.sponsorradar.io/seo/how-to-track-competitor-podcast-ad-spend-and-promo-codes.md)): Comprehensive 2026 media-buying ledger for Competitive Intelligence. Tracks $4.60M in verified monthly creator spend at a $62 blended CPM across 3x+ renewed p
- [Ecommerce & SMB Entrepreneurship Podcast Sponsors (Shopify, HubSpot, Zapier)](https://www.sponsorradar.io/seo/ecommerce-and-smb-business-podcast-sponsors) ([.md](https://www.sponsorradar.io/seo/ecommerce-and-smb-business-podcast-sponsors.md)): Comprehensive 2026 media-buying ledger for Ecommerce & SMB. Tracks $2.93M in verified monthly creator spend at a $52 blended CPM across 3x+ renewed podcast, n

## 4. Run Interactive Audit, Counterparty Previews & 1-Click Direct Stripe Checkout
- **Row #1 Verified Buyer Proof (Free — Shopify)**: `sarah.kaufman@shopify.com` | **Agency Desk**: `m.vance@rightsideup.co` (Right Side Up) — <1.4% 7-day SMTP bounce SLA
- **Row #2 Target Buyer Desk (syntax-fm)**: `s***.k***@syntaxfm.com` (+ Agency Desk: `m.***@rightsideup.co` • $49 Rack CPM → 3-Flight Floor Locked — Unmask Free with $0 Work Email)
- **Ring 3 Holdback Contract**: `$0` Work Email Sample unmasks 3 buyer/agency emails + Track A Opener + IAB §4.2 Rate Cap; `$19` Creator Pass / `$29` 109-Row Vault unlocks all 109 rows + IAB §7.1 (1.5% CTR Make-Good Clause) + Track B Counter-Offer + 3-Step Follow-Ups.
- Launch interactive calculator: [https://www.sponsorradar.io/seo/syntax-fm-sponsors-and-cpm-rates](https://www.sponsorradar.io/seo/syntax-fm-sponsors-and-cpm-rates)
- Preview $0 3-Credit Sample Dossier: [https://www.sponsorradar.io/dossier/sample?target=syntax-fm](https://www.sponsorradar.io/dossier/sample?target=syntax-fm)
- Preview Redlined IAB IO Make-Good Rider (.TXT): [https://www.sponsorradar.io/api/github-upgrade/iab-io-addendum.txt?target=syntax-fm](https://www.sponsorradar.io/api/github-upgrade/iab-io-addendum.txt?target=syntax-fm)
- Preview Dual-Track RFC-822 Outreach Pitch (.EML): [https://www.sponsorradar.io/api/github-upgrade/pitch.eml?target=syntax-fm](https://www.sponsorradar.io/api/github-upgrade/pitch.eml?target=syntax-fm)
- Preview 3-Row Verified Buyer Sample (.CSV): [https://www.sponsorradar.io/api/github-upgrade/export.csv?target=syntax-fm](https://www.sponsorradar.io/api/github-upgrade/export.csv?target=syntax-fm)
- 1-Click $19 Creator Outreach Pass: [https://www.sponsorradar.io/buy/creator_pass?target=syntax-fm](https://www.sponsorradar.io/buy/creator_pass?target=syntax-fm)
- 1-Click $29 Full 109-Row Named-Buyer & Agency CSV + IO Rider Vault ($29 One-Time) →: [https://www.sponsorradar.io/buy/playbook_pass?target=syntax-fm](https://www.sponsorradar.io/buy/playbook_pass?target=syntax-fm)
- 1-Click $149 B2B Agency & Talent Management Desk ($149 One-Time) →: [https://www.sponsorradar.io/buy/agency_desk?target=syntax-fm](https://www.sponsorradar.io/buy/agency_desk?target=syntax-fm)