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Prefect vs Dagster

Orchestrators evaluated together whenever a data team outgrows cron.

Prefectprefect.io

Public transparency

65/100CBand C

Rank 2 of 48 in Data integration

C

  1. Data processing agreement: found
  2. Subprocessor list: found
  3. Data location stated: not found
  4. Status page with history: found
  5. Public pricing: found
  6. Certifications named: found
  7. Uptime SLA with a figure: not found
  8. HTTPS enforced with HSTS: found
  9. No third-party tracking before consent: not found
  10. security.txt (RFC 9116): not found
  11. Notice before subprocessors change: found
  12. Named privacy contact: not found

Checked 2026-10-1112 checks

39point difference5differing criteria

Dagsterdagster.io

Public transparency

26/100EBand E

Rank 25 of 48 in Data integration

E

  1. Data processing agreement: not found
  2. Subprocessor list: not found
  3. Data location stated: not found
  4. Status page with history: not found
  5. Public pricing: found
  6. Certifications named: found
  7. Uptime SLA with a figure: not found
  8. HTTPS enforced with HSTS: found
  9. No third-party tracking before consent: not found
  10. security.txt (RFC 9116): not found
  11. Notice before subprocessors change: not found
  12. Named privacy contact: found

Checked 2026-10-1312 checks

5 differences out of 12 criteria we could measure for both, last measured 2026-10-13. They match on 7 of the 12 criteria we could measure for both.

No change recorded in these results since 2026-09-11. We compare every new measurement with the one before it; one that finds the same thing is not a change.

Public transparency score, not a product or security rating. This page compares what these two vendors publish, not what their products do.

Prepare your vendor review

A source is a starting point. Check the product, plan, legal entity and date before treating it as evidence for your purchase. These questions do not change the transparency score.

Prefect

7 found · 5 not found · 0 not measured across 12 public checks.

12 of 12 criteria have a measured result from the last 30 days. Oldest dated result: 2026-10-11.

Investigate 5 open evidence questions
  1. Data location stated

    Which locations apply to our primary data, backups and support access? Which region can we select for this plan?

    Inspect this check
  2. Uptime SLA with a figure

    Which availability commitment applies to our plan? Please include the measurement window, exclusions and credit claim process.

    Inspect this check
  3. No third-party tracking before consent

    Which third-party requests occur before a visitor makes a choice, and for what purpose? Please distinguish the public website from the product.

    Inspect this check
  4. security.txt (RFC 9116)

    Where should we report a vulnerability, and what acknowledgement and follow-up process should we expect?

    Inspect this check
  5. Named privacy contact

    Which privacy contact handles requests for our account, and what escalation path should we use?

    Inspect this check

Dagster

4 found · 8 not found · 0 not measured across 12 public checks.

12 of 12 criteria have a measured result from the last 30 days. Oldest dated result: 2026-10-13.

Investigate 8 open evidence questions
  1. Data processing agreement

    Please share the current data processing agreement for the product and plan we are considering, including its annexes and signing process.

    Inspect this check
  2. Subprocessor list

    Which subprocessors apply to our product, what does each process, and in which countries? Please share the current list.

    Inspect this check
  3. Data location stated

    Which locations apply to our primary data, backups and support access? Which region can we select for this plan?

    Inspect this check
  4. Status page with history

    Where can we review incident history for the service we will use, and how do we subscribe to incident updates?

    Inspect this check
  5. Uptime SLA with a figure

    Which availability commitment applies to our plan? Please include the measurement window, exclusions and credit claim process.

    Inspect this check
  6. No third-party tracking before consent

    Which third-party requests occur before a visitor makes a choice, and for what purpose? Please distinguish the public website from the product.

    Inspect this check
  7. security.txt (RFC 9116)

    Where should we report a vulnerability, and what acknowledgement and follow-up process should we expect?

    Inspect this check
  8. Notice before subprocessors change

    How will you notify us before a subprocessor changes, with how much notice, and what response options apply to our contract?

    Inspect this check

Criterion by criterion

CriterionPrefectDagster
Data processing agreement FoundChecked 2026-10-11
Source
  1. https://www.prefect.io/legal/data-processing-addendum
 Not found, 8 addresses checkedChecked 2026-10-13
8 addresses
  1. https://dagster.io/legal/dpa – reached, no match (HTTP 404)
  2. https://dagster.io/dpa – reached, no match (HTTP 404)
  3. https://dagster.io/legal/data-processing-agreement – reached, no match (HTTP 404)
  4. https://dagster.io/data-processing-agreement – reached, no match (HTTP 404)
  5. https://dagster.io/legal/data-processing-addendum – reached, no match (HTTP 404)
  6. https://dagster.io/legal/gdpr – reached, no match (HTTP 404)
  7. https://dagster.io/trust/dpa – reached, no match (HTTP 404)
  8. https://dagster.io/privacy/dpa – reached, no match (HTTP 404)
Subprocessor list FoundChecked 2026-10-11
Source
  1. https://www.prefect.io/sub-processors
 Not found, 7 addresses checkedChecked 2026-10-13
7 addresses
  1. https://dagster.io/legal/subprocessors – reached, no match (HTTP 404)
  2. https://dagster.io/subprocessors – reached, no match (HTTP 404)
  3. https://dagster.io/sub-processors – reached, no match (HTTP 404)
  4. https://dagster.io/legal/sub-processors – reached, no match (HTTP 404)
  5. https://dagster.io/trust/subprocessors – reached, no match (HTTP 404)
  6. https://dagster.io/privacy/subprocessors – reached, no match (HTTP 404)
  7. https://dagster.io/legal/subprocessor-list – reached, no match (HTTP 404)
Status page with history FoundChecked 2026-10-11
Source
  1. https://status.prefect.io/
 Not found, 3 addresses checkedChecked 2026-10-13
3 addresses
  1. https://status.dagster.io/ – The name "status.dagster.io" could not be resolved.
  2. https://dagster.io/status – reached, no match (HTTP 404)
  3. https://dagster.io.statuspage.io/ – Could not be fetched: fetch failed.
Notice before subprocessors change FoundChecked 2026-10-11
Source
  1. https://www.prefect.io/sub-processors
 Not found, 8 addresses checkedChecked 2026-10-13
8 addresses
  1. https://dagster.io/legal/subprocessors – reached, no match (HTTP 404)
  2. https://dagster.io/subprocessors – reached, no match (HTTP 404)
  3. https://dagster.io/sub-processors – reached, no match (HTTP 404)
  4. https://dagster.io/legal/dpa – reached, no match (HTTP 404)
  5. https://dagster.io/dpa – reached, no match (HTTP 404)
  6. https://dagster.io/legal/data-processing-agreement – reached, no match (HTTP 404)
  7. https://dagster.io/trust/subprocessors – reached, no match (HTTP 404)
  8. https://dagster.io/legal/sub-processors – reached, no match (HTTP 404)
Named privacy contact Not found, 7 addresses checkedChecked 2026-10-11
7 addresses
  1. https://prefect.io/legal/privacy – reached, no match (HTTP 404)
  2. https://prefect.io/privacy – reached, no match (HTTP 404)
  3. https://prefect.io/privacy-policy – reached, no match (HTTP 200)
  4. https://prefect.io/legal/privacy-policy – reached, no match (HTTP 200)
  5. https://prefect.io/legal/privacy-notice – reached, no match (HTTP 404)
  6. https://prefect.io/trust/privacy – reached, no match (HTTP 404)
  7. https://prefect.io/datenschutz – reached, no match (HTTP 404)
 FoundChecked 2026-10-13
Source
  1. https://dagster.io/privacy
Data location stated Not found, 7 addresses checkedChecked 2026-10-11
7 addresses
  1. https://prefect.io/security – reached, no match (HTTP 200)
  2. https://prefect.io/trust – reached, no match (HTTP 404)
  3. https://prefect.io/legal/privacy – reached, no match (HTTP 404)
  4. https://prefect.io/privacy – reached, no match (HTTP 404)
  5. https://prefect.io/privacy-policy – reached, no match (HTTP 200)
  6. https://prefect.io/compliance – reached, no match (HTTP 404)
  7. https://prefect.io/legal/privacy-policy – reached, no match (HTTP 200)
 Not found, 7 addresses checkedChecked 2026-10-13We found this behind a sign-in, so it is not published openly.
7 addresses
  1. https://dagster.io/security – found, but behind a sign-in
  2. https://dagster.io/trust – reached, no match (HTTP 404)
  3. https://dagster.io/legal/privacy – reached, no match (HTTP 404)
  4. https://dagster.io/privacy – reached, no match (HTTP 200)
  5. https://dagster.io/privacy-policy – reached, no match (HTTP 404)
  6. https://dagster.io/compliance – reached, no match (HTTP 404)
  7. https://dagster.io/legal/privacy-policy – reached, no match (HTTP 404)
Public pricing FoundChecked 2026-10-11
Source
  1. https://www.prefect.io/pricing
 FoundChecked 2026-10-13
Source
  1. https://dagster.io/pricing
HTTPS enforced with HSTS FoundChecked 2026-10-11
Source
  1. https://prefect.io/
 FoundChecked 2026-10-13
Source
  1. https://dagster.io/
No third-party tracking before consent Not found, 1 address checkedChecked 2026-10-11
1 address
  1. https://prefect.io/ – third-party requests before any interaction: cmp.osano.com
 Not found, 1 address checkedChecked 2026-10-13
1 address
  1. https://dagster.io/ – third-party requests before any interaction: api.segment.io, bzr.openai.com, bzrcdn.openai.com, cdn.segment.com, cmp.osano.com, data.sequel.io, forms.hscollectedforms.net, js.hs-banner.com, js.hs-scripts.com, js.hscollectedforms.net, js.hsforms.net, js.zi-scripts.com, o4509731398877184.ingest.us.sentry.io, pagead2.googlesyndication.com, prod-assets.sequelvideo.com, region1.google-analytics.com, ws-assets.zoominfo.com, ws.zoominfo.com, www.googletagmanager.com
Certifications named FoundChecked 2026-10-11
Source
  1. https://www.prefect.io/security
 FoundChecked 2026-10-13
Source
  1. https://dagster.io/security
Uptime SLA with a figure Not found, 6 addresses checkedChecked 2026-10-11
6 addresses
  1. https://prefect.io/legal/sla – reached, no match (HTTP 404)
  2. https://prefect.io/sla – reached, no match (HTTP 404)
  3. https://prefect.io/legal/service-level-agreement – reached, no match (HTTP 404)
  4. https://prefect.io/trust/sla – reached, no match (HTTP 404)
  5. https://prefect.io/uptime – reached, no match (HTTP 404)
  6. https://prefect.io/legal/uptime-sla – reached, no match (HTTP 404)
 Not found, 6 addresses checkedChecked 2026-10-13
6 addresses
  1. https://dagster.io/legal/sla – reached, no match (HTTP 404)
  2. https://dagster.io/sla – reached, no match (HTTP 404)
  3. https://dagster.io/legal/service-level-agreement – reached, no match (HTTP 404)
  4. https://dagster.io/trust/sla – reached, no match (HTTP 404)
  5. https://dagster.io/uptime – reached, no match (HTTP 404)
  6. https://dagster.io/legal/uptime-sla – reached, no match (HTTP 404)
security.txt (RFC 9116) Not found, 1 address checkedChecked 2026-10-11
1 address
  1. https://prefect.io/.well-known/security.txt – reached, no match (HTTP 404)
 Not found, 1 address checkedChecked 2026-10-13
1 address
  1. https://dagster.io/.well-known/security.txt – reached, no match (HTTP 404)

Differences first, then by weight. A cross is what we found at the addresses we checked on that date, not a statement about what either vendor has.

The full labels

Every criterion with its weight, and the band each vendor lands in.

Transparency labelsaas-ranking.com

Prefect

prefect.io · Data integration

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
C 65of 100 Rank 2 of 48

Published commitments6 of 9 found

Measured behaviour1 of 3 found

Checked 2026-10-11. Every line links the page we found it on. A cross means we found nothing at the addresses we checked, not that the vendor has no such document. A transparency score, not a product rating.

Transparency labelsaas-ranking.com

Dagster

dagster.io · Data integration

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
E 26of 100 Rank 25 of 48

Published commitments3 of 9 found

Measured behaviour1 of 3 found

Checked 2026-10-13. Every line links the page we found it on. A cross means we found nothing at the addresses we checked, not that the vendor has no such document. A transparency score, not a product rating.

Take it with you

Both vendors in one file, with every address we checked and every sentence we read, for a procurement file.

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Keep going

The order of the two names is the order of our editorial list. It is not a ranking, and no vendor pays to appear here or to appear first. See how we measure.