Response time, close rates, and revenue impact by company size from 939 B2B companies (Q1-Q3 2025)
Enterprise companies (201+ employees) average 58 hours to respond to leads -- nearly 2x slower than SMB (31 hours). The gap stems from manual routing, approval layers, and territory conflicts. SMB teams that respond within 5 minutes achieve 35% close rate (vs 16% at average speed). Enterprise loses $180 per minute of delay on high-ACV deals (Optifai Pipeline Study, 2026, N=939 B2B SaaS companies).
Lead response time by company size: SMB (1-50 employees) 31h average, Mid-Market (51-200) 42h, Enterprise (201+) 58h. Enterprise is slowest due to manual routing and approval layers. SMB teams responding <5 min close at 35% (vs 31h average: 16%). Revenue per minute of delay: SMB loses $12/min, Mid-Market $45/min, Enterprise $180/min. Source: Optifai Sales Ops Benchmark (N=939 companies, Q1-Q3 2025)
Calculate your response time ROI
Avg Response Time
31h
Respond <5 min
28%
Close Rate (Avg Speed)
16%
Close Rate (<5 min)
35%
Revenue Lost / Min Delay
$12
Avg Response Time
42h
Respond <5 min
20%
Close Rate (Avg Speed)
14%
Close Rate (<5 min)
30%
Revenue Lost / Min Delay
$45
Avg Response Time
58h
Respond <5 min
14%
Close Rate (Avg Speed)
11%
Close Rate (<5 min)
26%
Revenue Lost / Min Delay
$180
Source: Optifai Pipeline Study (2026, N=939 B2B SaaS companies). Revenue per minute calculated from average ACV and close rate decay curve.
Leads sit in queue while managers manually route to the right rep. Territory overlap creates ownership confusion.
Fix: Auto-routing by territory + product + language. LeanData or Chili Piper.
Regulated industries (finance, healthcare) require legal review before first contact. Adds 12-24 hours minimum.
Fix: Pre-approved response templates. Compliance review for templates, not individual emails.
Only 1-2 reps cover a niche vertical or product line. If they are in meetings, leads wait.
Fix: Cross-trained backup reps. On-call rotation with SMS alerts.
Global companies receive leads overnight. No follow-the-sun coverage for inbound.
Fix: Regional SDR teams or AI auto-response with timezone-appropriate booking links.
Reps required to enrich lead data before outreach. Adds 15-30 min per lead.
Fix: Auto-enrichment (ZoomInfo, Clearbit). Contact first, enrich later.
| Team Structure | Avg Response | <5 min Rate | Common In |
|---|---|---|---|
| Dedicated SDR team with on-call rotation | 8h | 42% | SMB, high-growth |
| SDR team (no on-call) | 18h | 25% | Mid-Market |
| AEs handle own inbound | 36h | 15% | Mid-Market, Enterprise |
| Centralized lead assignment (manual) | 52h | 8% | Enterprise |
| Channel partner routing | 72h | 5% | Enterprise, indirect |
Key finding: Dedicated SDR teams with on-call rotation achieve 42% <5 min response rate, regardless of company size. The bottleneck is team structure, not company size. An enterprise company with a dedicated on-call SDR outperforms an SMB with AE-handled inbound.
Small team? Detect signals, auto-act, zero missed deals.
Turn intent into action before competitors even notice.
Source: Optifai Sales Ops Benchmark (N=939 companies, Q1-Q3 2025)
This analysis segments lead response data from 939 B2B companies by employee count (CRM company size field) between Q1-Q3 2025. Revenue per minute calculated using average ACV by segment and close rate decay regression.
View Full MethodologyData last updated: February 16, 2026
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Led by Yusuke Onishi (Founder & CEO) with 15+ years of B2B sales operations experience. Our research team analyzes pipeline data from 939+ companies to deliver actionable benchmarks for sales leaders.