{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "FastBD 2026 Empirical B2B Client Acquisition & Outreach Benchmarks",
  "description": "Comprehensive empirical dataset covering Upwork proposal conversion metrics, LinkedIn connection rates with account safety limits, and local SMB technical flaw audit responses.",
  "version": "2026.3.0",
  "releaseDate": "2026-09-30",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "publisher": {
    "name": "FastBD Research Labs",
    "url": "https://fast-bd.com",
    "repository": "https://github.com/kylehffu/fastbd-ihpi-benchmark"
  },
  "citation": {
    "apa": "FastBD Research Labs. (2026). State of B2B AI Outreach Benchmark Report: Cross-Platform Analysis of 2,500 Proposals, 14,200 LinkedIn Inquiries, and 8,600 SMB Audits. FastBD.",
    "bibtex": "@techreport{fastbd2026benchmarks,\n  title={State of B2B AI Outreach Benchmark Report},\n  author={{FastBD Research Labs}},\n  year={2026},\n  institution={FastBD Suite},\n  url={https://fast-bd.com/report-2026}\n}"
  },
  "benchmarks": {
    "ihpi": {
      "name": "Inbox Hook Preview Index",
      "slug": "ihpi",
      "url": "https://fast-bd.com/ihpi",
      "sampleSize": 2500,
      "viewportConstraintChars": 160,
      "formula": "IHPI = min(100, max(0, [(C_proof + 2.5 * C_name - C_fluff) / 160] * 100))",
      "tiers": [
        {
          "tier": "Commodity Fluff",
          "scoreRange": "0-39",
          "shareOfProposals": 0.624,
          "avgReplyRate": 0.048,
          "sampleSnippet": "Dear Hiring Manager, I am a passionate Full-Stack developer with 5+ years of experience in React..."
        },
        {
          "tier": "Standard Qualified",
          "scoreRange": "40-69",
          "shareOfProposals": 0.248,
          "avgReplyRate": 0.126,
          "sampleSnippet": "Hi there, I reviewed your Next.js repo issue and have resolved similar caching bugs before..."
        },
        {
          "tier": "High-Signal Hook",
          "scoreRange": "70-87",
          "shareOfProposals": 0.096,
          "avgReplyRate": 0.234,
          "sampleSnippet": "Hi Michael, your auth edge middleware is triggering 401s on token refresh. I shipped a patch for this..."
        },
        {
          "tier": "Elite Conversion",
          "scoreRange": "88-100",
          "shareOfProposals": 0.032,
          "avgReplyRate": 0.382,
          "sampleSnippet": "Michael, checked your Stripe webhook signature verification: your secret key formatting is missing the test prefix..."
        }
      ]
    },
    "cnrr": {
      "name": "Client Name Recovery Rate",
      "slug": "cnrr",
      "url": "https://fast-bd.com/cnrr",
      "reviewsAnalyzed": 18400,
      "overallRecoveryRate": 0.734,
      "conversionLift": 2.40,
      "patterns": [
        {
          "patternName": "Direct Gratitude",
          "frequencyShare": 0.421,
          "regex": "(?:thanks|thank you|huge thanks to)\\s+([A-Z][a-z]+)",
          "example": "Thanks Michael for the prompt communication and clear specs!"
        },
        {
          "patternName": "Relational Appraisal",
          "frequencyShare": 0.314,
          "regex": "(?:working with|pleasure working with)\\s+([A-Z][a-z]+)",
          "example": "Working with Sarah was an absolute pleasure from day one."
        },
        {
          "patternName": "Third-Person Character Reference",
          "frequencyShare": 0.186,
          "regex": "^([A-Z][a-z]+)\\s+is an?\\s+(?:exceptional|great|responsive|fantastic)",
          "example": "David is an exceptional founder who gives structured design feedback."
        },
        {
          "patternName": "Post-Contract Signoff",
          "frequencyShare": 0.061,
          "regex": "(?:all the best to|wishing)\\s+([A-Z][a-z]+)",
          "example": "All the best to Elena and the legal team on their launch!"
        }
      ],
      "salutationReplyRates": {
        "generic": { "rate": 0.084, "lift": "Baseline (0%)" },
        "neutral": { "rate": 0.142, "lift": "+69%" },
        "verifiedFirstName": { "rate": 0.286, "lift": "+240%" }
      }
    },
    "cbr": {
      "name": "Connects Burn Rate",
      "slug": "cbr",
      "url": "https://fast-bd.com/cbr",
      "sampleSize": 2500,
      "costPerConnectUsd": 0.15,
      "formula": "CBR = Total_Connects_Spent / Contracts_Won; CAC = CBR * 0.15",
      "tiers": [
        {
          "tier": "Commodity (IHPI < 40)",
          "connectsPerWin": 340,
          "cacUsd": 51.00,
          "avgBidPerProposal": 16.2
        },
        {
          "tier": "Standard (IHPI 40-69)",
          "connectsPerWin": 175,
          "cacUsd": 26.25,
          "avgBidPerProposal": 16.0
        },
        {
          "tier": "High-Signal (IHPI 70-87)",
          "connectsPerWin": 98,
          "cacUsd": 14.70,
          "avgBidPerProposal": 15.8
        },
        {
          "tier": "Elite (IHPI 88-100)",
          "connectsPerWin": 62,
          "cacUsd": 9.30,
          "avgBidPerProposal": 15.5
        }
      ],
      "costReduction": 0.818
    },
    "lcr": {
      "name": "LinkedIn Connection Rate & ALPS Safety",
      "slug": "lcr",
      "url": "https://fast-bd.com/lcr",
      "requestsAnalyzed": 14200,
      "characterLimit": 300,
      "hookAcceptanceRates": [
        {
          "category": "Immediate Sales Pitch (>200 chars)",
          "acceptanceRate": 0.142,
          "rejectionRate": 0.615,
          "ghostRate": 0.243,
          "banRisk": "High (ALPS < 50)"
        },
        {
          "category": "Blank / No Note",
          "acceptanceRate": 0.284,
          "rejectionRate": 0.321,
          "ghostRate": 0.395,
          "banRisk": "Moderate (ALPS ~70)"
        },
        {
          "category": "Peer Compliment (120-180 chars)",
          "acceptanceRate": 0.318,
          "rejectionRate": 0.264,
          "ghostRate": 0.418,
          "banRisk": "Low (ALPS ~85)"
        },
        {
          "category": "Hyper-Concise Observation Hook (60-120 chars)",
          "acceptanceRate": 0.437,
          "rejectionRate": 0.182,
          "ghostRate": 0.381,
          "banRisk": "Negligible (ALPS > 92)"
        }
      ],
      "alpsFormula": "ALPS = max(0, min(100, 100 - (P_pitch * 45 + P_link * 30 + P_len * 25)))"
    },
    "mvvr": {
      "name": "Mobile Viewport Vulnerability Rate",
      "slug": "mvvr",
      "url": "https://fast-bd.com/mvvr",
      "domainsAudited": 8600,
      "industriesCovered": ["Roofing", "Dental", "HVAC", "Plumbing", "Legal"],
      "vulnerabilityDistribution": {
        "mobileViewportOverflow": 0.412,
        "missingSslOrMixedContent": 0.189,
        "lcpOver4Seconds": 0.587,
        "missingOnlineBookingOrClickToCall": 0.524
      },
      "outboundResponseRates": {
        "genericPitch": { "replyRate": 0.012, "description": "'Hi, we are a leading web development agency...'" },
        "templatedPortfolio": { "replyRate": 0.038, "description": "'Saw your website, here is our recent portfolio...'" },
        "technicalFlawTeardown": { "replyRate": 0.246, "description": "'Noticed mobile horizontal scroll breaking button on iPhone 14 + 4.8s LCP delay...'" }
      },
      "replyRateLift": 19.50
    }
  }
}