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Decision Guide

Best A/B Testing Tool with Transparent Pricing

Updated December 2026
8 min read
TL;DR

Tools with transparent pricing: ExperimentHQ ($29/mo), PostHog (free-$450/mo), and GrowthBook (free self-hosted). Tools requiring sales calls (VWO, Optimizely, AB Tasty) typically cost $10,000-$200,000+/year. If pricing isn't on the website, assume it's expensive.

Pricing Transparency Comparison

ToolPricingTransparentSales CallVerdict
ExperimentHQ$29/moNoBest Transparent
PostHogFree - $450/moNoBest Free Tier
GrowthBookFree (self-hosted)NoBest Open Source
VWO"Contact Sales"RequiredHidden pricing
Optimizely"Contact Sales"RequiredHidden pricing
AB Tasty"Request Demo"RequiredHidden pricing

Hidden Costs to Watch For

  • • Traffic-based pricing: Costs spike with traffic growth
  • • Per-seat fees: Adding team members increases cost
  • • Annual contracts: Locked in even if you don't use it
  • • Feature gating: Basic features locked behind higher tiers
  • • Overage charges: Surprise bills for exceeding limits

Our Recommendation

Best transparent pricing: ExperimentHQ at $29/month. No traffic limits, no per-seat fees, no sales calls.

Best free option: PostHog or GrowthBook for teams with technical resources.

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