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Software · head to head

Comet ML vs Linear

Comet ML logo

Comet ML

Software

Platform for tracking, comparing, and optimizing ML experiments

From
Free
Rated
-
Linear logo

Linear

Software

The issue tracking tool you'll enjoy using

From
Free
Rated
-

The short version

  • Each has a real cost: Comet ML the free cloud tier caps data at 25,000 spans a month with 60 day retention; Linear no task-level Gantt chart; Timeline view is available for projects only, not individual issues
  • They diverge on capability: Comet ML covers Experiment tracking, Linear covers Fast, real-time sync.

Where they differ

Only the attributes on which Comet ML and Linear actually diverge.

Attributes where Comet ML and Linear differ
AttributeComet MLLinear
Pricing modelfreemiumUnknown
PlatformsWeb, Linux, Mac, WindowsWeb, iOS, Android, macOS, Windows
Founded20172019

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Comet ML

  • Experiment tracking
  • Code versioning
  • Model registry
  • Hyperparameter optimization
  • Production monitoring
  • PyTorch
  • TensorFlow
  • Keras

Only in Linear

  • Fast, real-time sync
  • Keyboard-first design
  • Automatic issue tracking
  • Cycles (sprints)
  • Projects & milestones
  • Custom workflows
  • API & webhooks
  • Built-in roadmaps

What people use each for

The jobs each tool is most often brought in to do.

Comet ML

  • Tracking machine learning experiments, metrics and model versionsnot Linear
  • Monitoring and evaluating LLM applications with tracingnot Linear

Linear

  • Issue management and triage, converting customer feedback into prioritized issuesnot Comet ML
  • Strategic planning via initiatives, roadmaps, and PRDs from idea to launchnot Comet ML
  • Agent-assisted development, with agents drafting docs and submitting pull requestsnot Comet ML
  • Code review with structural diffs for human and agent outputnot Comet ML
  • Progress monitoring via dashboards tracking cycle times and project healthnot Comet ML

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Comet ML

  • The free cloud tier caps data at 25,000 spans a month with 60 day retention
  • Retention stays at 60 days even on the paid Pro plan, and extending it is a $29 per 100k spans add on
  • Overage on Pro is $5 per additional 100,000 spans
  • The free MLOps tier is a single user with 100 GB of storage and training hours governed by a fair usage policy
  • Pro MLOps is $19 per user per month and caps the team at 10 users

Linear

  • No task-level Gantt chart; Timeline view is available for projects only, not individual issues
  • No native time-tracking or hour-logging feature
  • No native Linux desktop app; official FAQ states it 'may come in the future but it's not on the roadmap for now'
  • Free tier capped at 250 issues and 2 teams

Pricing, plan by plan

Comet ML

Free
  • FreeFree
    • 100 experiments
    • Basic features
    • Community support
  • Team$179/month
    • Unlimited experiments
    • Team collaboration
    • Priority support

Linear

Free
  • FreeFree
    • Unlimited members
    • 2 teams
    • 250 issues
  • Basic$10/month
    • 5 teams
    • Unlimited issues
    • Unlimited file uploads
  • Business$16/month
    • Unlimited teams
    • Private teams/guests
    • Triage Intelligence
  • Enterprise$undefined/month
    • SAML/SCIM
    • Granular admin controls
    • Invoice/PO billing

Which should you pick?

Choose Comet ML if

  • You need experiment tracking.
  • You want to start without paying.
  • You work on Web, Linux, Mac, Windows.
  • You also want code versioning.

Choose Linear if

  • You need fast, real-time sync.
  • You want to start without paying.
  • You work on Web, iOS, Android, macOS, Windows.
  • You also want keyboard-first design.

Questions people ask

Is Comet ML or Linear better?
Neither clearly leads. Comet ML starts at Free and Linear at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Comet ML or Linear?
Comet ML starts at Free and Linear at Free.
Does Comet ML or Linear run on more platforms?
Comet ML runs on Web, Linux, Mac, Windows. Linear runs on Web, iOS, Android, macOS, Windows.
Can I use Comet ML for free?
Both have a free tier, so you can try either at no cost before committing.
What is Comet ML best used for?
Comet ML is most often used for tracking machine learning experiments, metrics and model versions, monitoring and evaluating llm applications with tracing. Of those, tracking machine learning experiments, metrics and model versions and monitoring and evaluating llm applications with tracing are not what Linear is typically brought in for.
What can Comet ML do that Linear cannot?
Comet ML covers Experiment tracking, Code versioning, Model registry, Hyperparameter optimization. Linear covers Fast, real-time sync, Keyboard-first design, Automatic issue tracking, Cycles (sprints).

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