Pricing

Priced by spans. Never by seat.

Every plan runs the full engine: Foresight, Steer, X-Ray, Replay & Fork, Guard and MCP are never upsells, and Mission Control, push to your phone and the fleet views come with them. You pay for volume, retention and the things a team needs around it.

Free

$0 forever

Everything the engine does, hosted. For side projects and first agents.

Included
1M spans / month
Retention
14 days
Past the cap
Hard cap
  • Foresight, Steer, X-Ray, Replay & Fork and Guard
  • Mission Control and fleet views
  • Email and push alerts
  • 3 projects, 3 members
Start free

Team

$349 / month

For companies that answer to auditors.

Included
200M spans / month
Retention
90 days
Past the cap
$1.50 / 1M spans, opt-in
  • Everything in Pro
  • Notarized ledger and evidence packs
  • SSO (OIDC) and audit log
  • 99.9% uptime SLA
Start on Team

Enterprise

Custom annual contract

For contracts: custom volume, retention and rate limits.

Included
Custom volume
Retention
Custom (1 year+)
Past the cap
Custom
  • Everything in Team
  • Retention from one year
  • 99.95% uptime SLA
Talk to us
  • No per-seat pricing. Invite the whole team.
  • No export or egress fees. Export stays on even when capped or unpaid.
  • A hard cap by default. At the cap ingest pauses; reads keep working; nothing is deleted early.
  • The same engine you can run yourself. Leave with your data any time.

What would a month cost?

The same arithmetic billing uses, from the same price table.

Type a number like 2.5M, 750K or 1,200,000. One span is one operation: a model call, a tool call, an HTTP request.

Free
$0

Ingest pauses at 1M; upgrade to keep ingesting. Reads and export keep working.

Pro Lowest cost
$69

$49 + $20 for 10M spans past the included 20M.

Team
$349

Within the included 200M.

Enterprise
Custom

Volume, retention and terms by contract.

Per month, before tax. Overage is metered per span and rounded up to the cent.

Every plan, side by side.

Traza Cloud plans compared
Feature FreeProTeamEnterprise
Price $0 / mo $49 / mo $349 / mo Custom (annual)
Spans per month, included 1M spans / month 20M spans / month 200M spans / month Custom volume
Overage (opt-in; default is a hard cap) — $2.00 / 1M spans $1.50 / 1M spans Custom
Retention 14 days 30 days 90 days Custom (1 year+)
Projects 3 Unlimited Unlimited Unlimited
Members 3 Unlimited Unlimited Unlimited
Foresight · Steer · X-Ray · Replay & Fork · Guard · TQL · MCP Included Included Included Included
Mission Control: live runs across projects, with Approve, Kill and Nudge Included Included Included Included
Fleet views: Foresight board, change digest, coding agents Included Included Included Included
Alerts (push with Approve, Kill and Nudge) Email, push Email, push, interactive Slack, webhook Email, push, interactive Slack, webhook Email, push, interactive Slack, webhook
Share links and proof links — Included Included Included
Notarized ledger and evidence packs — — Included Included
SSO (OIDC) and audit log — — Included Included
Rate limit per project (req/s / burst) 50 / 200 500 / 2,000 2,000 / 8,000 Custom
Support Community Email (2 business days) Priority (1 business day), 99.9% SLA Dedicated, 99.95% SLA

As of October 2026

What others charge.

List prices as each vendor’s own pricing page stated them on October 17, 2026. No discounts, commitments or enterprise terms. Units differ — a LangSmith trace is a whole request with all its steps, a Langfuse unit counts traces, observations and scores separately, Braintrust meters gigabytes — so we list each in the vendor’s own unit rather than convert it into a comparison none of them publishes. Prices change; follow the source links. Something out of date? Write to hello@trazadb.com and we will fix it.

Published list prices of LLM observability products, as of October 2026
Product · plan List price Included Additional usage Retention
Traza Cloud · spans
Free $0 1M spans / mo Not available (hard cap) 14 days
Pro $49 / mo 20M spans / mo $2.00 / 1M spans, opt-in 30 days
Team $349 / mo 200M spans / mo $1.50 / 1M spans, opt-in 90 days
Langfuse Cloud · Units: any tracing data point — traces, observations (spans, events, generations) and scores each count. source
Hobby $0 50k units / mo — 30 days data access
Core $29 / mo 100k units / mo $8 / 100k units, lower with volume 90 days data access
Pro $199 / mo 100k units / mo $8 / 100k units, lower with volume 3 years data access
Enterprise $2,499 / mo 100k units / mo $8 / 100k units, lower with volume 3 years data access
Graduated overage: $8 / 100k up to 1M units, $7 to 10M, $6.50 to 50M, $6 beyond. Open source and self-hostable.
LangSmith · Traces (a trace is one request with all of its steps), plus seats on Plus. source
Developer $0 / seat (1 seat) 5k base traces / mo 0.005 LSU per base trace 14 days (base)
Plus $39 / seat / mo 10k base traces / mo 0.005 LSU per base trace 14 days (base)
Enterprise Custom Custom Custom Custom
1 LSU = $1.00, so 0.005 LSU is $5.00 per 1,000 base traces. Upgrading a trace to extended retention (180 days) adds 0.0025 LSU.
Braintrust · Processed data (GB) and scores, plus model credits. source
Starter $0 / mo 1 GB processed data, 10k scores +$4 / GB, +$2.50 / 1k scores 14 days
Pro $249 / mo 5 GB processed data, 50k scores +$3 / GB, +$1.50 / 1k scores 30 days (+$0.50 / GB / mo extended)
Enterprise Custom Custom Custom Custom
Datadog LLM Observability · LLM spans. source
Free $0 / mo Up to 40K LLM spans / mo — 15 days
Pro $160 / mo billed annually ($200 month-to-month, $240 on-demand) 100K LLM spans / mo $3.50 / 10K LLM spans annually ($4.20 month-to-month, $5 on-demand) 15 days
Listed on the pricing page as Agent Observability. Longer trace retention is a priced add-on.
Pydantic Logfire · Records: spans, logs and metrics on one meter. source
Personal Free 10M records / mo Not allowed (ingestion pauses) 30 days
Team $49 / mo 10M records / mo $2 / M 30 days
Growth $249 / mo 10M records / mo $2 / M Up to 90 days
Enterprise Custom Custom Custom Custom
Team includes 5 seats, then $25 per extra seat.
Arize AX · Trace spans and ingestion volume (GB). source
AX Free $0 25k spans / mo, 1 GB Not published 15 days
AX Pro $50 / mo 50k spans / mo, 10 GB Not published 30 days
AX Enterprise Custom Custom Custom Custom
Arize also publishes Phoenix, an open-source tracing and evaluation tool, with no listed price.

Questions

What counts as a span?

One recorded operation with a start and an end: a model call, a tool call, an agent step, an HTTP request. A span is counted when the engine admits it, so a batch refused at the cap is not billed. Retries of a span the store already holds are counted again, because they were sent again.

What happens when we reach the included spans?

With overage off (the default), ingest pauses: the engine answers new batches with HTTP 429 and a Retry-After header, and OpenTelemetry exporters back off and retry. Reads, exports, replays and erasure keep working, and nothing is deleted early. The cap is per organization across all of its projects; metering runs every minute, so ingest can run past the cap by up to a minute's worth of traffic before the pause takes effect.

How does overage work?

Pro and Team can turn on overage from the billing page: $2.00 per million spans on Pro, $1.50 on Team, metered per span and reported hourly. Set a spend cap to bound it. Without a spend cap the allowance is 10x the included spans on top of them (on Pro, 220M spans a month in total), after which ingest pauses as it does with overage off.

Do you charge per seat?

Never. Paid plans include unlimited members; Free allows 3 members and 3 projects. Viewers, members, admins and owners all cost the same: nothing.

Are there export or egress fees?

No. Export is always on, on every plan, including when you are capped or a payment has failed. GET /v1/export streams one span per line in Traza's native JSON and ends with a trailer that says whether the export is complete; the native ingest route of your own traza-server reads those lines. The export guide shows how to check completeness and how to bring along the large payloads and annotations the export does not carry.

Can we move to self-hosted later, or back?

Yes. Traza Cloud runs the open traza-server binary, so a self-hosted server stores and answers exactly the same way. Export from the cloud, check that the export is complete, POST the lines to your own server in batches, and point your exporters at it; large payloads and annotations come separately, as the export guide describes. Going the other way works the same with an ingest key; strip $tenant from the lines first if your server used tenants, because a project key accepts only its own.

What does retention mean here?

Spans older than your plan's retention (14 days on Free, 30 on Pro, 90 on Team) are expired by the engine, which checks every minute. Retention follows the plan you are on: after a downgrade, spans older than the new window expire, so export first if you need them.

When does a billing period start?

Paid plans follow your subscription period. Free follows the calendar month in UTC.

How do we pay, and where are invoices?

Upgrades go through Stripe Checkout. Payment methods, invoices and cancellation live in the Stripe billing portal, one click from the console's billing page. Switching between Pro and Team is prorated; a downgrade from Team to Pro takes effect at the end of the period.

What if a payment fails?

The organization is marked past due, and any billing alert rules you have set up fire. After a seven-day grace period ingest is paused until the invoice is paid. Reads and exports keep working throughout.

What is in Enterprise?

Everything in Team, plus retention from one year, custom rate limits, a 99.95% uptime SLA, dedicated support and volume set by an annual contract. Write to hello@trazadb.com with your volume and what you need, and we will put it together.

Start on Free. Upgrade when the cap says so.