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CloudWatch vs Comet ML

CloudWatch logo

CloudWatch

Logging

AWS Monitoring and Observability

From
Free
Rated
-
Full reviewWebsite
Comet ML logo

Comet ML

Machine Learning

Platform for tracking, comparing, and optimizing ML experiments

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: CloudWatch the free tier covers 5 GB of log ingestion and 10 custom metrics a month, after which log ingestion is $0.50 per GB from 5 to 30 GB; Comet ML the free cloud tier caps data at 25,000 spans a month with 60 day retention
  • They diverge on capability: CloudWatch covers Metrics collection, Comet ML covers Experiment tracking.

Where they differ

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

Attributes where CloudWatch and Comet ML differ
AttributeCloudWatchComet ML
Pricing modelusage-basedfreemium
PlatformsWeb, ApiWeb, Linux, Mac, Windows
CategoryLoggingMachine Learning
Founded20062017

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

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 CloudWatch

  • Metrics collection
  • Log aggregation
  • Dashboards
  • Alarms and notifications
  • API
  • Webhooks
  • REST
  • Api support

Only in Comet ML

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

Both cover

  • Web support

What people use each for

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

CloudWatch

  • Metrics and log collection for AWS workloadsnot Comet ML
  • Alarming on thresholds across AWS servicesnot Comet ML
  • Querying logs with Logs Insightsnot Comet ML
  • Live tailing logs during an incidentnot Comet ML
  • Distributed tracing alongside X-Raynot Comet ML

Comet ML

  • LLM observability and monitoringnot CloudWatch
  • AI agent testing and debuggingnot CloudWatch
  • Experiment tracking for machine learningnot CloudWatch
  • Model registry and version managementnot CloudWatch
  • ML model training monitoringnot CloudWatch

Where each one falls short

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

CloudWatch

  • The free tier covers 5 GB of log ingestion and 10 custom metrics a month, after which log ingestion is $0.50 per GB from 5 to 30 GB
  • Custom metrics are $0.30 each for the first 10,000, so instrumenting broadly gets expensive before volume discounts apply
  • Each custom dashboard beyond the free three is $3 a month
  • Alarms are billed at $0.10 per alarm metric a month, with high-resolution alarms costing more
  • Log storage beyond the free 5 GB is $0.03 per GB per month on top of the ingestion charge

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

Pricing, plan by plan

CloudWatch

Free
  • Pay-as-you-goFree
    • Logs ingestion: $0.50/GB (first 5GB free), down to $0.05/GB at scale
    • Logs storage: $0.03/GB/month
    • Live Tail: $0.01/minute after 1,800 free minutes
  • Free tierFree
    • 5GB logs ingestion per month
    • 10 custom metrics
    • 3 custom dashboards

Comet ML

Free
  • Free CloudFree
    • Up to 10 team members
    • 25,000 spans per month
    • 60-day data retention
  • Pro Cloud$19/month
    • Up to 50 team members
    • 100,000 spans per month
    • 60-day data retention
  • MLOps FreeFree
    • 1 user with fair usage policy
    • Experiment tracking
    • Dataset management
  • MLOps Pro$19/user/month
    • Up to 10 users
    • 1,500 training hours included
    • 500GB storage included

Which should you pick?

Choose CloudWatch if

  • You need metrics collection.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want log aggregation.
CloudWatch review

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.
Comet ML review

Questions people ask

Is CloudWatch or Comet ML better?
Neither clearly leads. CloudWatch starts at Free and Comet ML at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CloudWatch or Comet ML?
CloudWatch starts at Free and Comet ML at Free.
Does CloudWatch or Comet ML run on more platforms?
CloudWatch runs on Web, Api. Comet ML runs on Web, Linux, Mac, Windows.
Can I use CloudWatch for free?
Both have a free tier, so you can try either at no cost before committing.
What is CloudWatch best used for?
CloudWatch is most often used for metrics and log collection for aws workloads, alarming on thresholds across aws services, querying logs with logs insights, live tailing logs during an incident. Of those, metrics and log collection for aws workloads and alarming on thresholds across aws services are not what Comet ML is typically brought in for.
What can CloudWatch do that Comet ML cannot?
CloudWatch covers Metrics collection, Log aggregation, Dashboards, Alarms and notifications. Comet ML covers Experiment tracking, Code versioning, Model registry, Hyperparameter optimization. Both handle Web support.

Answered from the vendors’ own pages

CloudWatch: How much does Amazon CloudWatch cost?

CloudWatch uses pay-as-you-go pricing with no upfront commitment. Logs ingestion costs $0.50/GB (first 5GB free), logs storage is $0.03/GB/month, custom metrics cost $0.30/metric/month (first 10,000), custom dashboards are $3/month, and standard alarms are $0.10/metric/month.

Source
Comet ML: Does Comet.ml offer a free plan?

Yes, Comet.ml offers free tiers for both Opik (cloud observability) and MLOps platforms. Free Cloud Opik includes up to 10 team members and 25,000 spans/month. Free MLOps tier is limited to 1 user.

Source
CloudWatch: Does CloudWatch offer a free tier?

Yes, CloudWatch free tier includes 5GB logs ingestion, 10 custom metrics, 3 custom dashboards, and 10 alarm metrics per month at no charge. Usage beyond these limits incurs pay-as-you-go fees.

Source
Comet ML: How many team members can use the free Comet.ml tier?

Free Cloud supports up to 10 team members. The Pro Cloud plan supports up to 50 team members at $19/month.

Source
CloudWatch: What are CloudWatch's pricing tiers for high-volume usage?

CloudWatch offers tiered pricing with volume discounts: logs ingestion starts at $0.50/GB and decreases to $0.05/GB at higher volumes; custom metrics start at $0.30/metric/month and decline to $0.05 at higher volumes; Application Signals cost $1.50 per million traces initially, declining to $0.30.

Source
Comet ML: What is a span in Comet.ml pricing?

A span represents a single tracked operation such as model requests or function calls. Free Cloud tier includes 25,000 spans per month.

Source
Comet ML: Does Comet.ml offer academic pricing?

Yes, a free Pro plan is available for academic users; verification is required via signup.

Source
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