Enterprise capability, mid-market budget.
One monthly price per plan, with seat limits by tier. On-device detection means inference costs us nothing per prompt, and that shows up in the price. Every plan starts with a conversation — we create your tenant and roll the extension out with you, so there is no self-serve trial to sign up for yet.
Not ready to pay yet? Run it free for 30 days.
We're taking on 3–5 Indian teams as design partners: the full product, up to 50 seats, no card and no auto-conversion to a paid plan. See the terms.
Three plans. One conversation.
A flat monthly price per plan, with seat limits set by tier. Detection runs on the device, so there is no per-prompt inference bill to pass on to you. Contact us for a quote scoped to your organization.
Starter
For a first rollout: see what your team is sending to AI, and stop the obvious leaks.
Professional
RecommendedFor teams that need evidence: incident correlation, an audit trail, and data they can take elsewhere.
Enterprise
For regulated organisations: single sign-on, AI security briefings, and scale.
SSO and SCIM work today, but we configure them for you rather than exposing self-serve setup. SIEM connectors are not built — event export is.
Talk to sales- Browser extension (Chrome MV3) — ChatGPT, Claude, Gemini, Copilot, Perplexity, Open WebUI
- On-device detection: credit cards (Luhn-checked), SSN, Aadhaar and PAN (checksum-validated), email, phone, AWS keys, generic high-entropy secrets, PEM private keys
- Prompt-injection & jailbreak heuristics
- Policy-as-Code DSL with YAML parser, evaluator, versioning
- Cloud escalation to Amazon Nova Pro on Amazon Bedrock (optional, fail-open)
- Go telemetry service with Postgres, self-migrating schema, SSE stream
- Admin dashboard with live prompt monitor, policy manager, analytics
- SSO via SAML 2.0 or OIDC, and SCIM 2.0 provisioning (we configure it for you)
- Event export (CSV / JSON)
- Alerting to Slack, email, webhook and PagerDuty
- On-device ML classifier (transformers.js / ONNX Runtime Web) — prompt injection
- Named Entity Recognition (transformers.js / ONNX Runtime Web) — names, organizations, locations
- Non-US phone and additional national ID formats
- Signed policy bundles (Cosign / Sigstore)
- Audit log anchored publicly to Sigstore Rekor
- Self-serve signup, trials and in-product billing
- Automated enforcement of audit-retention windows
- SIEM connectors (Splunk, Microsoft Sentinel, Datadog, Elastic)
- MDM-pushable deployment (Microsoft Intune, Jamf, ManageEngine)
- Custom ML model fine-tuning per tenant
- Document fingerprinting (MinHash) for proprietary content
- Dedicated deployment + data residency (multi-region)
- Physical isolation / on-prem option
- BYOK (customer-managed encryption keys)
- Policy simulation against historical traffic
- Multi-modal: image input scanning, voice AI
What each plan actually includes.
Availability below is checked against the plan catalogue our provisioning actually reads, so the plan you buy is the plan you are given — this table isn't written to sell. Anything marked planned is not built yet and is not included in any plan — it is listed so you can see it coming, not so you can buy it.
| Capability | Starter | Professional | Enterprise |
|---|---|---|---|
| Limits | |||
| SeatsProvisioned at plan change; larger fleets are the Custom plan | 10 | 100 | 1,000 |
| Detection and enforcement | |||
| Browser extension (Chrome MV3)ChatGPT, Claude, Gemini, Microsoft Copilot, Perplexity, Open WebUI | Included | Included | Included |
| On-device detectionAadhaar and PAN (checksum-validated), cards, SSN, email, phone, AWS keys, high-entropy secrets | Included | Included | Included |
| Prompt-injection heuristicsInstruction override, jailbreaks, indirect injection, encoding evasion | Included | Included | Included |
| Policy engineAllow, redact, warn, block — versioned, with rollback | Included | Included | Included |
| Model response scanning | Included | Included | Included |
| On-device ML classifierBuilt and tested; switched off until a model backs it | Planned | Planned | Planned |
| Visibility | |||
| Live prompt monitorStreaming decisions, filterable by tool, user and category | Included | Included | Included |
| Shadow AI discovery | Included | Included | Included |
| Threat analysisCorrelates violations into incidents and surfaces patterns | Not included | Included | Included |
| AI security briefing | Not included | Not included | Included |
| Governance and evidence | |||
| Hash-chained audit logEditing or deleting an entry breaks the chain and is detectable | Not included | Included | Included |
| Event exportCSV and JSON | Not included | Included | Included |
| SIEM connectorsSplunk, Microsoft Sentinel, Datadog, Elastic. Export is available today; the connectors are not built | Planned | Planned | Planned |
| Signed policy bundlesCosign/Sigstore verification in the extension | Planned | Planned | Planned |
| Operations | |||
| Team management and invites | Included | Included | Included |
| AlertingSlack, email, webhook and PagerDuty destinations | Included | Included | Included |
| Cloud escalationAmazon Nova Pro on Bedrock for ambiguous prompts. Off by default, fails open | Not included | Included | Included |
| SSO — SAML 2.0 or OIDCWorking today, configured by our team rather than self-serve | Not included | Not included | Included |
| SCIM 2.0 provisioning | Not included | Not included | Included |
| MDM-pushable deploymentIntune, Jamf, ManageEngine packaging | Planned | Planned | Planned |
Scroll the table sideways to compare plans
Before you buy
Audit retention is not a plan difference
Retention is configurable per tenant, but nothing automatically purges on it yet. We will not sell you a retention window we do not enforce — until the purge job ships, treat retention as “kept” rather than “deleted on schedule”.
Custom domains are not available on any plan
The field exists in our data model and you may see it referenced internally. There is no implementation behind it, so it is not part of any plan today.
We hold no compliance certifications
Not SOC 2, not ISO 27001, and we are not certified against the DPDP Act. What PromptSec gives you is a technical control and the evidence trail that supports one — never a certificate, and never an evidence package for a certification we do not hold.
Onboarding is hands-on, not self-serve
There is no self-serve signup yet. We create your tenant, deploy the extension with you, and invite your first users — which is why every plan starts with a conversation rather than a card.
Questions, answered.
AI prompt security means watching what employees send to generative AI tools like ChatGPT, Claude, and Gemini, and stepping in when it matters — catching sensitive data, secrets, and prompt-injection attempts before the prompt reaches the AI, then applying a policy-defined action: allow, redact, block, or warn. PromptSec applies this at the browser, before a prompt ever leaves the employee's device. See below for exactly what it detects today.