LangSmith vs Braintrust — Pricing (2026)
Compare / LangSmith vs Braintrust
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Team size
25 seats

LangSmith vs Braintrust

AI Observability & Evals pricing comparison · 2026

LangSmith pricing ranges from $0–$39/seat/month + per trace, while Braintrust ranges from $0–$249/month. LangSmith is typically 84% 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 LangSmith pricing
Free plan limits → Discount programs →
Visit Braintrust pricing
Free plan limits → Discount programs →
Compare
2 products · AI Observability & Evals
Side-by-side · live
LangSmith
LangSmith pricing starts at $0/month on the Developer plan, offering LLM tracing, prompt v
verified 10w ago
View pricing →
Braintrust
Braintrust pricing starts with a permanently free Starter plan at $0/month, suitable for i
verified 11w ago
View pricing →
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Usage-based
$1.5 per LCU
see vendor pricing for volume tiers
Usage-based
$4 per GB
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 4 sourced facts
2 hidden-cost · 2 contract
Last verified 2mo ago
Confidence Limited confidence
Sources 3 sourced facts
1 hidden-cost · 2 contract
Last verified 2mo ago
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
2 documented
  • LangGraph Platform Separate Pricing
    10-25% of license costs
    1 source
  • Hosted Platform Features Not Disclosed Pre-Login
    $39/month
    1 source
1 documented
  • Opaque Enterprise Pricing
    5-15% of license costs
    1 source
REF · 04

Contract terms

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

LangSmith
Braintrust
Auto-renewal
Yes
Yes
Cancellation
30 days before the end of the current term (Enterprise plans); until the end of the current billing period (Developer and Plus plans)
30 days before the renewal date
Commitment
minimum annual usage commitment, billed in advance (Enterprise tier)
$249 per month for Pro plan; custom annual contract for Enterprise
Price escalation
—
—
Can downgrade
—
—
Based on 4 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
No public ratings yet
Best for
Solo developers getting started
Watch out
Premium pricing relative to open-source self-hosted alternatives like Langfuse
No public ratings yet
Best for
Solo developers and small evaluations
Watch out
Sales team is reportedly reluctant to discuss pricing details, described as 'offstandish' by at least one team evaluating alternatives
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit LangSmith pricing
Free plan limits → Discount programs →
Visit Braintrust 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

LangSmith

$0–$39
/seat/month + per trace
3 plans · Free tier
Full pricing breakdown →
VS
AI Observability & Evals

Braintrust

$0–$249
/month
3 plans · Free tier
Full pricing breakdown →

LangSmith and Braintrust both operate in the ai observability category. This page compares their published pricing.

Plan-by-Plan Pricing

Plan LangSmith Braintrust
Developer Free /seat/month Free /month
Plus $39 /seat/month $249 /month
Enterprise Custom Custom

Cost at Scale

Total cost of ownership — licenses, implementation, and hidden costs included.

LangSmith

4 scenarios
$0/month (Developer plan)
Solo Developer
$39/month (Plus plan)
Small Dev Team
$117
Small Team (3–5 Developers)
$195/month (3–5 users × $39/user/month on Plus plan)
See all 4 scenarios →

Braintrust

3 scenarios
$0/month
Solo Developer or Small Team
$249/month ($2,988/year)
Growing AI Team on Pro
Custom — contact sales
Enterprise Deployment

Contract Terms

Term LangSmith Braintrust
Auto-renewal Yes Yes
Cancellation 30 days before the end of the current term (Enterprise plans); until the end of the current billing period (Developer and Plus plans) 30 days before the renewal date
Minimum commitment minimum annual usage commitment, billed in advance (Enterprise tier) $249 per month for Pro plan; custom annual contract for Enterprise

Continue researching

LangSmith

Braintrust

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