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Persona

Last updated 2026-06-28 · benchmark measured 2026-09-12 — deterministic & reproducible

Persona.js is a vanilla JavaScript UI library for building agentic chat interfaces on the web.

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To cite this score: legit.show/s/persona-chat-dev/2026-09-12. That address never changes; this page moves with every re-measure.

Legit.Show scored Persona 67/100 on 2026-09-12, measured across 6 of 7 frames from its public surface. legit.show/s/persona-chat-dev/2026-09-12

Is Persona production-ready?

Legit.Show scores Persona 67 out of 100 — the simple average of its 6 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Persona (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. 6 of the seven frames returned a score; Accessibility was not measurable on this service and is recorded as null — not as zero. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 80/100
• Accessibility — not measurable on this service (null — not scored as 0)
• Security — 45/100
  How this compares across the catalogue: The Web Security Baseline
• Privacy — 25/100
  How this compares across the catalogue: The Privacy Gap
• Reliability — 100/100
• Standards — 75/100
• Discoverability — 75/100

What we measured

• Security headers present: HSTS.
• No Content-Security-Policy.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 162 ms to first byte.
• Returns a proper 404 for unknown routes.
• 3 of 3 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.

Who it's for

Web developers · AI/agent integration teams · JavaScript developers · Product teams building AI assistants

Sources and updates

Description

Taken from persona-chat.dev's own website on 2026-06-28.

Benchmark

Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-09-12.

Put together from public information, without Persona's involvement. If anything here is wrong, tell us and a person will check it.

Visit Persona → · Alternatives to Persona → · How this was measured →