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 pricing ranges from $0–$0/month, while MongoDB Atlas Vector Search ranges from $0–$56.94/per hour. pgvector is typically 100% more affordable, though your actual cost depends on tier and team size.

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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
pgvector
pgvector is a free, open-source PostgreSQL extension that adds vector similarity search to
verified 16d ago
View pricing →
MongoDB Atlas Vector Search
MongoDB Atlas Vector Search pricing starts at $0/month on the M0 Free tier, which provides
verified today
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 No structured sources
Last verified 2w ago
Confidence Limited confidence
Sources 3 sourced facts
3 hidden-cost
Last verified today
Confidence Limited 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
No hidden costs documented
2 documented
  • Unpredictable Scaling Costs
    5-15% of license costs
    2 sources
  • Dedicated Cluster Cost Cliff
    $600-$700/month
    1 source
REF · 05

What users say

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

User reviews
TrustRadius · Trustpilot · G2
No public ratings yet
Best for
Teams already running Postgres who want vector search without a separate database
No public ratings yet
Best for
Learning and exploring MongoDB in a cloud environment
Watch out
Pricing perceived as expensive compared to alternatives, especially at the dedicated tier
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

$0–$0
/month
1 plan · Free tier
Full pricing breakdown →
VS
Vector Databases

MongoDB Atlas Vector Search

$0–$56.94
/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

Continue researching

pgvector

MongoDB Atlas Vector Search

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