PromptAssay
XI.Subscription

Pricing that respects your time.

Free to start. Self-serve through Team. Contact us only when you need Enterprise controls. BYOK at every paid tier.

Free
$0/ month

For trying the editor and seeing what the AI pair does to your prompts.

  • Personal workspace
  • 500 AI calls a month — enough to explore
  • All five in-editor AI actions, on the free tier
  • 7-day version view
  • Single seat
  • BYOK: bring an Anthropic, OpenAI, or Google key
Start free
No card. Upgrade any time.
Most popular
Solo
$49/ month

For the prompt engineer who is shipping.

  • Unlimited AI calls on your keys
  • Full version history
  • Every in-editor AI action
  • Public API and TypeScript SDK
  • Single seat
Start solo
BYOK required. Cancel any time.
Team
$99/ seat / month

For teams reviewing prompts like code.

  • Everything in Solo
  • Shared org library
  • Owner, admin, member roles
  • Team evaluation suites
  • Invitations and seat management
  • 3 to 15 seats
Start a team
Minimum 3 seats. Annual billing available.
Enterprise
Contact us

For engineering orgs that need SSO and custom controls.

  • Everything in Team
  • SAML SSO
  • Unlimited seats
  • Custom tier controls
  • Data processing agreement
  • Priority support
Talk to us
Custom contract. Talk to us.
BYOK at every paid tier. Your keys. Your bill. No markup.
Why this price

Some prompt tools cost less. Here is what you get that they do not ship.

Five in-editor AI actions

Critique, improve, rewrite, brainstorm, and compare. The full pair, not a single "AI suggest" button bolted on the side.

Six-dimension critique with rationale

Clarity, completeness, structure, technique, robustness, efficiency. Each scored with a written reason. Not a single number.

Multi-provider authoring

Anthropic, OpenAI, and Google all wired into the same editor. Switch providers and re-run without changing tools.

BYOK as a principle

Your provider account, your bill, no markup on a single token. Most tools resell inference or proxy your traffic. We do neither.

Reusable context blocks

System instructions, examples, guardrails, task frames, all reusable across prompts. Edit once, propagate everywhere.

Self-serve, no demo gate

Free, Solo, and Team are all self-serve. Talk to us only for Enterprise controls.

If a cheaper tool covers what your team does, use it. We do not chase price.

XII.Marginalia

Questions, answered plainly.

Yes, on every paid tier. We never resell inference. Your provider account is where your usage is billed and where your logs live. We think this is the only honest way to run this kind of platform.

Open the editor. Write a better prompt.

Free to start. Your keys, your bill, no demo call.

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