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Compare · Nightfall

Colchix vs. Nightfall

AI-native data loss prevention, with a browser extension, an endpoint agent and SaaS connectors. Strong where it stands. Under the X-ray, here's where it breaks, and what Colchix brings instead.

Its benches on the Argo
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A marble statue of Achilles with helmet, shield and spear, under an X-ray beam that finds the cracks in the stone.
  1. No coverage gap measured
  2. Classifies your text in its US cloud
  3. Coding agents watched, not masked
  4. Unmanaged devices out of reach
  5. No round trip: answers come back [REDACTED]

The benches

Nightfall's ship, and ours

Governing AI takes a whole crew: the console, the lookout, the guard, the scribe and the judge.

Nightfall

  • One consoleThe ship

    Half done.

    A console for incidents; no coverage gap measured

  • ARGUSThe lookout

    Half done.

    Sees AI only on devices rolled out by MDM

  • TALOSThe guard

    Half done.

    Redacts, but answers come back as [REDACTED]

  • ATHENAThe scribe

    Half done.

    Incidents logged; no AI Act evidence documented

  • THEMISThe judge

    Empty.

    Detection runs in its US cloud; no EU option documented

Colchix

  • Colchix OSThe ship

    Filled.

    One console for every AI tool and every team, with the gap still to cover given as a number.

  • ARGUSThe lookout

    Filled.

    Finds every AI tool on every device, personal accounts included, without reading a prompt.

  • TALOSThe guard

    Filled.

    Masks the secret, keeps the question, and puts the real values back while the answer streams.

  • ATHENAThe scribe

    Filled.

    Turns everyday AI activity into evidence for the EU AI Act, GDPR and ISO/IEC 42001.

  • THEMISThe judge

    Filled.

    Our own model, in Europe: finds and judges in one pass, a confidence for every value, under 100 ms (target).

Head to head

Nightfall and Colchix, row by row

How values are foundNightfall: Language-model and vision detectorsColchix: THEMIS finds and judges in one pass over the whole textA separate finder caps what can be protected: regex alone found 59 in 100, a finder then a judge 69.
Exact boundariesNightfall: Not publishedColchix: Trained and scored on exact spans (target: ≥ 90 in 100 protected)Half a value leaks: mask “Kestrel” in “Project Kestrel” and the project is still named.
Would masking break the request?Nightfall: Not documentedColchix: Asked for every value, and learned from examplesMask everything and the answer is useless; mask nothing and it leaks.
Confidence per valueNightfall: Not publishedColchix: A calibrated probability for every valueA threshold on an uncalibrated score is a guess.
Real values back in the replyNightfall: No: redacted values stay redactedColchix: Yes, restored while the answer streamsAnna gets a usable answer instead of [REDACTED].
Whole attachmentsNightfall: File and vision detectors; speed not publishedColchix: 16k tokens in 0.8 s (target); refuses rather than cutsPeople attach contracts and exports. A silent cut-off is a silent leak.
Speed on every sendNightfall: Not publishedColchix: Under 100 ms per message, median (target)It sits in front of the send button. Slow protection gets switched off.
Where the model runsNightfall: Its cloud, in the USColchix: Our own weights, in the EU, or in your own cloudResidency, and no new sub-processor for your DPO to object to.
Evidence for auditsNightfall: Incidents, not AI Act evidenceColchix: ATHENA files every record under the rule it provesThe EU AI Act, GDPR and ISO/IEC 42001 ask for proof, not policies.
Every AI tool, every deviceNightfall: Managed devices only, rolled out by MDMColchix: ARGUS finds them all, personal accounts includedYou can't protect what you can't see.

The same prompt

Only one answer comes back whole

Anna asks for a reminder about a late invoice, with an email and an IBAN in it.

Anna, accounts payable types

Email jane@acme.com: invoice IT60X0542811101000000123456 is late

Nightfall

The provider sawEmail [REDACTED]: invoice [REDACTED] is late

Anna read

Dear [REDACTED], invoice [REDACTED] …

Anna puts the address and the IBAN back by hand.

Colchix

The provider sawEmail <CXT_EMAIL_3f9a01c2>: invoice <CXT_IBAN_77b0e4d1> is late

Anna read

Dear jane@acme.com, invoice IT60X0542811101000000123456 is now 14 days late…

The provider never saw the email or the IBAN.

Alongside

Already on Nightfall?

Keep it for SaaS data loss prevention in Slack and Drive. Add Colchix where AI is used: answers that come back whole, a model that judges in Europe, and every AI tool on every device in one console.

Also compared: CrowdStrike · NordLayer · nexos.ai · all of them

Ready to sail with a full crew?

Every AI tool, every device, one console.

Start free, or see it on your own AI use.

Start for freeBook a demo
  • Any AI tool
  • Prompts never stored
  • Live in 5 minutes
  • ARGUS, AI Discovery Agent
  • TALOS, AI Data Protection Agent
  • ATHENA, AI Compliance Agent

ARGUSTALOSATHENA

Colchix governs the AI tools your teams already use, among them ChatGPT, Claude, Gemini, Microsoft Copilot, Cursor, Mistral, Perplexity, DeepSeek, GitHub Copilot, Grok, Notion AI, Hugging Face, Meta AI, Qwen, Ollama.

Colchix vs. Nightfall FAQs

What people ask when they put Colchix next to Nightfall.

What's the difference between Colchix and Nightfall?

Nightfall is data loss prevention extended to AI: it finds sensitive data and redacts or blocks it, and the answer comes back with the holes still in it. Colchix masks the value, keeps the question and puts the real value back in the answer, decided by THEMIS, its own model in Europe. Around that sit ARGUS, which finds every AI tool on every device, and ATHENA, which turns the activity into audit evidence.

Does Colchix send my text to the US to classify it?

No. THEMIS runs on its own weights in the EU, or in your own cloud. Nightfall's documentation describes cloud detectors with no on-device or EU option we could find.

See where Colchix runs
Can we run Colchix and Nightfall side by side?

Yes. Many teams keep their DLP for SaaS apps like Slack and Drive and add Colchix for the AI tools people use, where the round trip and the AI inventory matter most.

Nightfall's capabilities from its public documentation (nightfall.ai), checked on 30 September 2026. THEMIS figures are release targets. Something out of date? Write to hello@colchix.com.

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