True cost comparison — not just what the pricing page says
Quick Verdict
PostHog saves you 5%
Best for Twilio
Open-source product analytics suite. Generous free tier with 1M events/mo, then usage-based pricing
Best for PostHog
Cloud communications API platform. Pay-per-use pricing seems transparent, but per-message fees, phon
Cloud communications API platform. Pay-per-use pricing seems transparent, but pe...
Advertised
$0
/month
True Cost
$475
/month (typical)
Carrier Surcharges on SMS
In addition to $0.0079/SMS, carrier surcharges add $0.003-$0.006 per message. Total cost is $0.011-$...
Phone Number Monthly Fees
Each phone number costs $1.15/mo (local US) or $2-15/mo (toll-free/international). Companies with re...
Lookup & Verification Costs
Phone number lookup ($0.005/lookup), carrier lookup ($0.01), and Verify API ($0.05/verification) add...
Open-source product analytics suite. Generous free tier with 1M events/mo, then ...
Advertised
$0
/month
True Cost
$180
/month (typical)
Multiple Billing Meters
PostHog bills separately for: analytics events ($0.00031/event), session replays ($0.005/recording),...
Session Replay Storage Costs
Session replays cost $0.005/recording after free 5K/mo. High-traffic sites recording 50K sessions/mo...
Data Pipeline Add-On
Exporting data to external data warehouses (BigQuery, Snowflake, S3) requires the data pipeline add-...
PostHog advertises $0/mo. Twilio advertises $0/mo.
PostHog has 3 documented hidden fees. Twilio has 3.
PostHog confidence: 75%. Twilio confidence: 74%.
| Metric | Twilio | PostHog | Winner |
|---|---|---|---|
| Advertised Price | $0/mo | $0/mo | Twilio |
| True Monthly Cost | $475/mo | $180/mo | PostHog |
| Hidden Fee Total | +$475/mo | +$180/mo | PostHog |
| # Hidden Fees | 3 | 3 | Twilio |
| Confidence Score | 74% | 75% | PostHog |
| Pricing Tiers | 2 | 2 | — |
| Affiliate Program | None | None | — |
Twilio advertises $0/mo and PostHog advertises $0/mo. However, when you include hidden fees, Twilio has 3 documented hidden fees adding +$475/mo, while PostHog has 3 hidden fees adding +$180/mo. Based on true cost, PostHog is typically 5% cheaper.
Twilio has 3 documented hidden fees: Carrier Surcharges on SMS, Phone Number Monthly Fees, Lookup & Verification Costs. These add approximately +$475/mo on top of the $0/mo advertised price.
PostHog has 3 documented hidden fees: Multiple Billing Meters, Session Replay Storage Costs, Data Pipeline Add-On. These add approximately +$180/mo on top of the $0/mo advertised price.
Choose Twilio if: Open-source product analytics suite. Generous free tier with 1M events/mo, then usage-based pricing . Choose PostHog if: Cloud communications API platform. Pay-per-use pricing seems transparent, but per-message fees, phon. The right choice depends on your team size, usage volume, and which features you need most.
This comparison is based on manual research of official pricing pages, terms of service, and user reports. Twilio data has a 74% confidence score and PostHog has 75%. Prices were last verified in April 2026. For the most accurate estimate, enter your specific usage in our calculator.
Enter your usage to see personalized pricing for both tools
Use Free Calculator