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Rheostat Summit 2026 — twelve talks on shipping agents safely. Oct 14, San Francisco.

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Rheostat

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Pricing

Pay for the dial,
not the seats.

Every plan includes unlimited seats and unlimited flags. You pay for evaluations above your plan — nothing else.

Free

$0/ month

For side projects and first experiments.

Start free
  • 1M evaluations / month
  • Unlimited flags and seats
  • Percentage rollouts
  • Community support

Team

Most teams

$240/ month, billed yearly

For product teams shipping every day.

Start a 14-day trial
  • 25M evaluations / month
  • Auto-rollback rules
  • Agent traces and judges
  • Audit log · 1 year
  • Email and chat support

Enterprise

Customannual contract

For regulated and multi-team orgs.

Talk to sales
  • Volume evaluations
  • SSO, SCIM and approval flows
  • Dedicated region and keys
  • 99.99% SLA
  • Named support engineer

Every feature,
side by side.

FeatureFreeTeamEnterprise
Releases
Evaluations / month1M25MVolume
Percentage rolloutsYesYesYes
Scheduled rolloutsNoYesYes
Auto-rollback rulesNoYesYes
Agents
Agent traces7 days90 daysCustom
Judges in library20240+240+
Approval gatesNoYesYes
Security
SSO / SCIMNoNoYes
Audit log retention30 days1 yearForever
Dedicated regionNoNoYes

Only pay extra for
what you actually use.

Overages are billed at cost, never at a penalty rate. Set a hard cap and we stop, not charge.

Evaluations
$0.008
per 1,000 above plan
Agent traces
$0.20
per 1,000 spans stored
Seats
$0
always, for everyone

Worth every evaluation.

“We moved from a homegrown flag service and our bill was lower than the on-call hours it saved in month one.”

Maya OkaforHead of Platform, Northwind

“Usage pricing meant we could start on one service and grow into it. No seat maths, no surprises.”

Tomás ReyesHead of AI, Ordinal

“The hard cap is the most underrated feature. Finance loves it more than engineering does.”

Lena VogtVP Engineering, Parallax

Billing questions.

What counts as an evaluation?
One SDK call that returns a flag value. Cached reads on the client are free.
Can I change plans mid-month?
Yes. Upgrades are prorated to the day; downgrades apply at the next cycle.
Do you charge for failed requests?
No. Errors and timeouts are never billed.
Is there a startup discount?
Companies under two years old get Team at 50% for the first year.
What happens at my hard cap?
Flags keep serving their last value. New rollouts pause until you raise the cap.
Can I pay by invoice?
Enterprise plans can pay by invoice in USD, EUR or GBP.

Start on the
free plan.

One million evaluations a month, unlimited flags and seats. No card, no sales call.