pgvector vs MongoDB Atlas Vector Search: Vector Databases Pricing (2026)
Compare / pgvector vs MongoDB Atlas Vector Search
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Team size
25 seats

pgvector vs MongoDB Atlas Vector Search

Vector Databases pricing comparison · 2026

pgvector is free, while MongoDB Atlas Vector Search is usage-based from $0.011 per hour.

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See pricing on each vendor's site
Above-the-fold path — each link opens the vendor's pricing page in a new tab.
Visit pgvector pricing
Free plan limits → Discount programs →
Visit MongoDB pricing
Free plan limits → Discount programs →
Compare
2 products · Vector Databases
Side-by-side · live
P
pgvector
pgvector is a free, open-source PostgreSQL extension that adds vector similarity search to
verified 3mo ago
View pricing →
MongoDB Atlas Vector Search
MongoDB Atlas Vector Search pricing starts at $0/month on the M0 Free tier, which provides
verified 10w ago
View pricing →
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Pricing model unknown
Pricing model unknown
no public list price found
Usage-based
$0.011 per hour
see vendor pricing for volume tiers
REF · 01

Sources & confidence

Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.

Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources 10 sourced facts
8 hidden-cost · 1 contract · 1 review platform
Last verified 3mo ago
Confidence Limited confidence
Sources 11 sourced facts
8 hidden-cost · 2 contract · 1 review platform
Last verified 2mo ago
Confidence Medium confidence
REF · 02

Plans at a glance

Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.

Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 03

Hidden costs

Each cost is severity-ranked, with the dollar range quoted from its source (Vendr, Reddit, TrustRadius, BBB, official docs) — never our estimate.

Beyond the sticker
Severity-ranked, sourced
5 documented
  • pgvector Resource Utilization
    $560/month
    1 source
  • Self-Hosting Setup & Maintenance
    $4,000–$8,000 one-time
    1 source
  • Embedding & Inference Fees
    $0.08 per million tokens
    1 source
  • Reindexing Costs
    $8,000–$15,000 one-time
    1 source
  • Query Cost Scaling
    1 source
5 documented
  • Unpredictable Scaling Costs
    5-15% of license costs
    2 sources
  • Dedicated Cluster Cost Cliff
    $600-$700/month
    1 source
  • Developer Support Subscription Continues After Cluster Deletion
    $5/month
    1 source
  • Paid Technical Support Required for Complex Issues
    5-15% of license costs
    2 sources
  • Forced Version Upgrades May Require More Expensive Cluster Tiers
    $56.94/month
    2 sources
REF · 04

Contract terms

The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.

pgvector
MongoDB
Auto-renewal
Yes
Yes
Cancellation
30, 60, or 90 days before the renewal date
—
Commitment
—
—
Price escalation
—
—
Can downgrade
—
—
Based on 3 verified sources (Vendr · TrustRadius · BBB)
REF · 05

What users say

Aggregated, with sample sizes. We use whichever review platform has data.

User reviews
TrustRadius · Trustpilot · G2
G2
3.8out of 5 (12)
Best for
Teams already running Postgres who want vector search without a separate database
Watch out
Steep learning curve for configuration
Trustpilot
1.1out of 5 (11)
Best for
Learning and exploring MongoDB in a cloud environment
Watch out
Poor and unresponsive customer support during critical outages, limited to documentation links
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit pgvector pricing
Free plan limits → Discount programs →
Visit MongoDB pricing
Free plan limits → Discount programs →
License cost is computed from publicly listed plans (real math, list price × seats). Median annual cost is from Vendr's deal flow when available — see source badges. Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
Vector Databases

pgvector

Free
1 plan · Free tier
Full pricing breakdown →
VS
Vector Databases

MongoDB Atlas Vector Search

Free tier; usage-based, from $0.011 per hour
3 plans · Free tier
Full pricing breakdown →

pgvector and MongoDB Atlas Vector Search are both vector databases competitors. This page compares their list pricing tier by tier so you can see which is cheaper for your workload shape.

Plan-by-Plan Pricing

Plan pgvector MongoDB Atlas Vector Search
Open Source (Free) Free /month Free /hour
Flex — $8 /hour
Dedicated (M10+) — $56.94 /hour

What Users Say

pgvector

G2
3.8out of 5 (12)
Top complaints
  • Steep learning curve for configuration
  • Resource-intensive setup and management

MongoDB Atlas Vector Search

Trustpilot
1.1out of 5 (11)
Top complaints
  • Poor and unresponsive customer support during critical outages, limited to documentation links
  • Data loss and prolonged inaccessibility during regional AWS outages due to same-region backup defaults
  • Complicated multi-step account cancellation process spanning 72+ hours with time-sensitive codes

Hidden Costs

Beyond the sticker price — what catches buyers off guard.

pgvector 8 hidden costs

medium
pgvector Resource Utilization $560/month
high
Self-Hosting Setup & Maintenance $4,000–$8,000 one-time
high
Embedding & Inference Fees $0.08 per million tokens (source dated Jun 2026)
high
Reindexing Costs $8,000–$15,000 one-time
high
Query Cost Scaling
See all pgvector hidden costs →

MongoDB Atlas Vector Search 5 hidden costs

medium
Unpredictable Scaling Costs 5-15% of license costs
high
Dedicated Cluster Cost Cliff
medium
Developer Support Subscription Continues After Cluster Deletion $5/month
high
Paid Technical Support Required for Complex Issues 5-15% of license costs
high
Forced Version Upgrades May Require More Expensive Cluster Tiers $56.94/month
See all MongoDB Atlas Vector Search hidden costs →

Contract Terms

Term pgvector MongoDB Atlas Vector Search
Auto-renewal Yes Yes
Cancellation 30, 60, or 90 days before the renewal date —
Minimum commitment — —

Continue researching

pgvector

MongoDB Atlas Vector Search

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