"Download: The Q1 2026 Startup Benchmarks" — @CJ Gustafson (Mostly Metrics)
Why this is in the vault
CJ's quarterly community-sourced benchmark report is the closest thing operators get to a real-time pulse on private SaaS unit economics. The Q1 2026 cut is published from the POV of operators making resource-allocation decisions (not VCs valuing the asset class), which is the lens RDCO needs for MAC and the SaaS-disruption-by-agents thesis. The body of the numbers is paywalled, but the teaser plus section structure tells us the direction of the headline metrics and what to query when the founder unlocks the PDF.
Headline signals (from the public teaser)
- CAC: up. Direction confirmed in the teaser ("hope your CAC... [is] faring better than the trends we are seeing"). Magnitude not in the free section.
- NDR: down. Same teaser line. Magnitude not in the free section.
- Public SaaS multiples: "getting ANNIHILATED." CJ's framing; he says it's "good to be private" because public multiples continue compressing.
- This is the second consecutive quarter (per recent CJ pieces) where CAC trend and NDR trend are both moving the wrong way at the same time. CAC up + NDR down is the canonical "distribution pressure on both ends" signature.
Report table of contents (what's in the 33-page PDF)
Sales Efficiency
- Revenue growth
- Retention by ARR Band
- Retention by ACV Band
- CAC Payback by ARR Band
- CAC Payback by ACV Band
- Sales vs Marketing Spend Mix
Staffing & Talent
- Headcount growth
- Headcount mix by department
- Revenue per employee
Cost Structure and Efficiency
- Gross Margin by ARR Band
- Gross Margin by company sector
- Spend as % of company sector
- Burn Multiple by ARR Band
- Rule of 40 by ARR Band
Mapping against Ray Data Co
- Reinforces SaaS-distribution-under-pressure thesis. If Q1 2026 confirms CAC up + NDR down as a multi-quarter pattern (not a one-quarter blip), it's structural — and structural means the timing window for agent-native alternatives is opening, not closing. Aligns with [[2026-02-06-stratechery-weekly-saasmageddon-super-bowl]] and [[2026-04-01-every-saas-dead-linear]].
- MAC discovery question relevance. CAC Payback by ARR Band and Retention by ARR Band are the two segmentation cuts MAC's diagnostic should mirror. If CJ's data shows a clear inflection at a specific ARR band, MAC's pricing/positioning targets that band.
- NDR-down is the more interesting signal for RDCO. CAC up could be explained by ad-cost inflation or AI-search-disruption-of-SEO. NDR down means existing customers are buying less seat expansion or churning more — that's the seat-based model breaking on the expansion side, which is the agent-replacement leading indicator.
- Action: when founder unlocks the PDF, extract actual percentages for CAC trend, NDR trend, Rule of 40 by ARR band, and Burn Multiple by ARR band. Those are the four numbers that change RDCO timing math.
Decision check: structural inflection?
The teaser doesn't quote magnitudes, so I can't apply the "CAC spike >25% or NDR drop >5pts" rule yet. Status: pending full report. If the founder picks up the paid PDF and the actual numbers cross those thresholds, this becomes decision-worthy for re-pacing the SaaS-disruption thesis in Sanity Check and adjusting MAC's go-to-market timing.
Related
- [[2026-05-11-mostlymetrics-cac-payback-calculation]] — CJ's mechanics for computing CAC Payback correctly (gross-margin adjusted, sales-cycle lagged). Pair with the benchmark numbers when they unlock.
- [[2026-05-11-mostlymetrics-ltv-cac-nickelback]] — CJ's argument for retiring LTV/CAC in favor of CAC Payback as the headline.
- [[2026-01-23-mostlymetrics-vertical-saas-metrics]] — Earlier Mostly Metrics piece on vertical SaaS unit economics; pairs with the segmentation cuts in this report.
- [[2026-05-11-cfo-secrets-ai-for-cfos-series-synthesis]] — Sister-newsletter coverage of CFO posture toward AI; same operator audience as Mostly Metrics.
- [[2026-02-06-stratechery-weekly-saasmageddon-super-bowl]] — Thompson's macro framing of public SaaS multiple compression.
- [[2026-04-01-every-saas-dead-linear]] — Agent-disruption-of-SaaS thesis Linear cited; benchmark deterioration is the operating-data signal that thesis predicts.
- [[2026-04-23-moonshots-elon-cursor-bet-claude-kills-saas-openai-databases]] — Adjacent agent-kills-SaaS framing.
- [[2026-04-03-saas-metrics-that-matter]] — General SaaS metrics reference; this Q1 report is the current-period instance.
- [[2026-05-13-shopify-enterprise-ai-search-insights-q1-2026-benchmarks]] — Adjacent Q1 2026 benchmark cut (e-commerce side); cross-quarter pattern check.
- [[2026-05-17-mostly-metrics-sector-refresh-new-nine]] — Public-comp companion (138 names, nine sectors). Use the two together: private benchmarks by ARR band + public medians by sector = full operator comp picture.