Compare

Open Token vs LangSmith

LangSmith, from LangChain, is a strong platform for tracing, evals, datasets and prompt work. It also offers an LLM gateway with real-time spend policies by organization, workspace, key or user, including for Amazon Bedrock. Paid plans start at US$39 per seat per month.

Where Open Token is different

Monitoring per agent run, feature and end customer, with loop-detection alerts today and in-path stopping on our roadmap. LangSmith's spend policies block requests today, at organization, workspace, key or user level.
Inference runs in your AWS account through a revocable role, and our attribution tags appear in your own AWS cost reports. LangSmith connects to Bedrock with a stored token.
No per-seat pricing: 20 users cost US$70 a month on Team (or nothing extra on Business), against US$780 on LangSmith Plus.
Stored AI traces at US$3.00 per 1,000 on every plan, against US$5.00 per 1,000 base traces on LangSmith (US$7.50 with extended retention). Non-AI traces, and traces that were not stored, do not count, and they do not reduce the bill.

When LangSmith is the better fit

Your team lives in evals, datasets, annotation and prompt iteration, and cost governance is secondary.
You need spend caps that block requests today.

Using both

Many teams keep LangSmith for evals and use Open Token for spend governance, with traces exported from Open Token to LangSmith.

Capability	Open Token	LangSmith
Spend caps that block requests	Partialalerts today, blocking on roadmap	Yesorg, workspace, key, user
Per-run monitoring and loop detection alerts	Yes	No
Stopping an agent run in the request path	Soon	No
Budgets and alerts per feature and end customer	Yes	No
Bedrock access without stored secrets	Yes	No
Attribution tags in your AWS cost reports	Yes	No
Costs reconciled with your AWS invoice (CUR)	Yes	No
OpenTelemetry ingest	Yes	Yes
Evals, datasets, prompts	Nointegrates	Yes
Seats	Yes10 to 50 included	NoUS$39 per seat

Spend caps that block requests

Open Token: Partialalerts today, blocking on roadmap
LangSmith: Yesorg, workspace, key, user

Per-run monitoring and loop detection alerts

Open Token: Yes
LangSmith: No

Stopping an agent run in the request path

Open Token: Soon
LangSmith: No

Budgets and alerts per feature and end customer

Open Token: Yes
LangSmith: No

Bedrock access without stored secrets

Open Token: Yes
LangSmith: No

Attribution tags in your AWS cost reports

Open Token: Yes
LangSmith: No

Costs reconciled with your AWS invoice (CUR)

Open Token: Yes
LangSmith: No

OpenTelemetry ingest

Open Token: Yes
LangSmith: Yes

Evals, datasets, prompts

Open Token: Nointegrates
LangSmith: Yes

Seats

Open Token: Yes10 to 50 included
LangSmith: NoUS$39 per seat

Based on each vendor's public documentation and pricing as of September 26, 2026. Tell us if something has changed and we'll update it.

Sources: LangSmith pricing · LangSmith LLM gateway spend policies

All comparisons

See your AI spend the way finance does

Accounts are set up by our team. Tell us which model providers you use and we'll walk you through a live workspace with your own numbers.

Book a demo See pricing