Backplain vs Perplexity Enterprise Pro: what's actually different.
Perplexity is the strongest answer engine of record for cited web research. Backplain sits next to it: the same prompt across up to 10 frontier models, side by side, behind a patent-pending AI Firewall — for one flat $129/seat/mo.
| Perplexity Enterprise Pro | Backplain Business | |
|---|---|---|
| Per seat / month | $40 (monthly) · $400/yr (~$33/mo annual) | $129 — flat, listed |
| Annual cost (10 seats) | $4,000/yr — plus per-credit overage on top of 500 included credits/seat/mo | $15,480 — all-in, no overage |
| Minimum commitment | No hard minimum (self-serve); 250+ seats requires custom quote | 10 seats — monthly or annual |
| Token / credit pricing | 500 Computer credits included per seat/mo, then metered per-credit overage | Unlimited token usage — no meter, no caps |
| Model coverage | Curated set behind Perplexity's answer engine (GPT, Claude, Gemini variants — tier-gated) | 47 models across 9 providers |
| Multi-model comparison | Gated to Enterprise Max ($325/seat/mo) — 'Model council' | Up to 10 models side by side in one prompt — included |
| AI Firewall | — | Yes (patent-pending) — PII redaction before any model sees the prompt |
| Custom PII filtering | — | Yes |
| Prompt-level audit logs | Gated to 50+ seats or 1 Enterprise Max seat | Every prompt, every session, from seat one |
| Hosting flexibility | Perplexity-hosted SaaS only | SaaS → BYO cloud → bare metal |
| Compliance posture | SOC 2 Type II; GDPR; PCI DSS — no public HIPAA, FedRAMP, or CMMC posture listed | SOC 2 Type II in progress (target Q3 2026); HIPAA BAA available on Enterprise; NIST 800-53 / 800-171 (CMMC L2 baseline) controls mapped; FedRAMP pursuing — not yet listed on the Marketplace |
| Best fit | Teams that need cited research across the web and connected apps | Teams that want vendor-agnostic comparison and a hard PII boundary at one flat seat price |
This isn't Perplexity or Backplain. Keep Perplexity for what it does best — cited research across the web and your connected apps. Add Backplain next to it to pressure-test any answer against GPT-5.x, Claude, Gemini, Llama, Mistral, and others in a single prompt.
The core workflow is the one we offer everywhere else on this site: take a single prompt and run it across up to 10 models simultaneously and compare the answers in one view. For teams already on Perplexity Enterprise Pro, that turns Backplain into a second-opinion engine — no Enterprise Max upgrade required to put a "model council" in front of a researcher.
The other half is the AI Firewall. Every prompt that leaves Backplain passes through a patent-pending software-layer firewall with custom PII redaction before any model — Perplexity-curated or otherwise — sees it. Combined with prompt-level audit logs from seat one and a flat $129/seat/mo with no credit meter, Backplain fits cleanly alongside Perplexity for teams that want vendor-agnostic comparison and a hard compliance boundary, without giving up the cited-research workflow they already pay for.
Pricing source: Enterprise Pro listed at $40/seat/mo on Perplexity's Enterprise pricing page. Enterprise Max at $325/seat/mo is reported by TestingCatalog, Perplexity launches Enterprise Max for organizations, testingcatalog.com, and corroborated by Sasanova's 2026 pricing tracker (sasanova.com).