Arize Phoenix vs Humanloop — Pricing (2026)
Compare / Arize Phoenix vs Humanloop
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Team size
25 seats

Arize Phoenix vs Humanloop

AI Observability & Evals pricing comparison · 2026

Arize Phoenix pricing ranges from $0–$1000/month, while Humanloop uses custom pricing.

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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 Arize pricing
Free plan limits → Discount programs →
Visit Humanloop pricing
Free plan limits → Discount programs →
Compare
2 products · AI Observability & Evals
Side-by-side · live
Arize Phoenix
Arize Phoenix pricing starts at $0 with two free options: the self-hosted open-source Phoe
verified 10w ago
View pricing →
Humanloop
Humanloop offers a Free Trial plan at no cost, allowing teams to evaluate the platform bef
verified 9w ago
View pricing →
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Usage-based
$10 per 1M spans
see vendor pricing for volume tiers
Pricing model unknown
Pricing model unknown
no public list price found
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 7 sourced facts
7 hidden-cost
Last verified 2mo ago
Confidence Medium confidence
Sources 6 sourced facts
5 hidden-cost · 1 contract
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
  • AX Pro Overage Charges
    $0.0008 per span, $3 per additional GB
    1 source
  • AX Enterprise Plan Cost
    $60,000/year
    1 source
  • Limited Features in Free Plans
    1 source
  • Self-Hosting Operational Costs
    1 source
  • Paid Support for Self-Hosted Phoenix
    1 source
5 documented
  • Separate AI Provider Costs
    1 source
  • Scaling Inefficiencies with Human-in-the-Loop
    1 source
  • Increased Headcount and Cognitive Load Fatigue
    1 source
  • Unsustainable Operational Overhead from Implementation Gap
    1 source
  • Self-Hosting Infrastructure and Maintenance
    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 wanting self-hosted observability
Watch out
Lack of Prompt Management and Usage Analytics
No public ratings yet
Best for
Evaluating the platform
Watch out
Cost: Humanloop was considered a "very expensive service"
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit Arize pricing
Free plan limits → Discount programs →
Visit Humanloop 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.
AI Observability & Evals

Arize Phoenix

$0–$1000
/month
4 plans · Free tier
Full pricing breakdown →
VS
AI Observability & Evals

Humanloop

Custom pricing
/custom
2 plans · Free tier
Full pricing breakdown →

Arize Phoenix and Humanloop both operate in the ai observability category. This page compares their published pricing.

Plan-by-Plan Pricing

Plan Arize Phoenix Humanloop
Phoenix (Open Source) Free /month Free /month
AX Free Free /month Custom
AX Pro $50 /month —
AX Enterprise Custom —

Hidden Costs

Beyond the sticker price — what catches buyers off guard.

Arize Phoenix 7 hidden costs

high
AX Pro Overage Charges $0.0008 per span, $3 per additional GB
high
AX Enterprise Plan Cost $60,000/year
medium
Limited Features in Free Plans
medium
Self-Hosting Operational Costs
medium
Paid Support for Self-Hosted Phoenix
See all Arize Phoenix hidden costs →

Humanloop 5 hidden costs

high
Separate AI Provider Costs
critical
Scaling Inefficiencies with Human-in-the-Loop
high
Increased Headcount and Cognitive Load Fatigue
critical
Unsustainable Operational Overhead from Implementation Gap
high
Self-Hosting Infrastructure and Maintenance
See all Humanloop hidden costs →

Continue researching

Arize Phoenix

Humanloop

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