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Software · head to head

Sematext vs Axiom

Sematext logo

Sematext

Software

Full Stack Observability Platform

From
Free
Rated
-
Full reviewWebsite
Axiom logo

Axiom

Software

Serverless Log Analytics and Observability

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Sematext the $5 Basic plan caps ingestion at 500 MB a day and retains logs for 7 days; Axiom no self-hosted or air-gapped deployment option for compliance-sensitive workloads
  • They diverge on capability: Sematext covers APM, Axiom covers Serverless architecture.

Where they differ

Only the attributes on which Sematext and Axiom actually diverge.

Attributes where Sematext and Axiom differ
AttributeSematextAxiom
Pricing modelusage-basedUnknown
PlatformsWeb, ApiWeb (Chrome, Edge, Firefox, Safari), API
Founded20072017

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 Sematext

  • APM
  • Metrics monitoring
  • Anomaly detection

Only in Axiom

  • Serverless architecture
  • Real-time processing
  • AplLog query language
  • Cost-effective indexing

Both cover

  • Log aggregation
  • API
  • Webhooks
  • REST
  • Web support
  • Api support

What people use each for

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

Sematext

  • Centralised log management and search across servicesnot Axiom
  • Infrastructure and application monitoring alongside logsnot Axiom

Axiom

  • Log monitoringnot Sematext
  • Application performancenot Sematext
  • Security analyticsnot Sematext
  • Troubleshootingnot Sematext

Where each one falls short

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

Sematext

  • The $5 Basic plan caps ingestion at 500 MB a day and retains logs for 7 days
  • Ingestion and storage are billed on separate meters, at $0.10 per GB received and $0.15 per GB stored
  • Retention is a plan property rather than a setting, so keeping logs longer means moving tier
  • The published pricing page renders Standard and Pro figures from unresolved template placeholders, so only the Basic numbers are actually readable

Axiom

  • No self-hosted or air-gapped deployment option for compliance-sensitive workloads
  • Vendor lock-in due to APL (Axiom Processing Language) not transferring to other platforms
  • Proprietary storage format limits data portability and external analytics access
  • Complex pricing model with multiple cost dimensions (ingestion, compute, storage) makes budgeting difficult at scale
  • Limited ecosystem integration; does not integrate deeply with existing observability stacks like Grafana for metrics and Jaeger for traces

Pricing, plan by plan

Sematext

Free
  • FreeFree
    • Log aggregation
    • APM
    • Metrics monitoring

Axiom

Free
  • PersonalFree
    • 500GB/month data loading
    • 10 GB-hours query compute
    • 25GB storage
  • Axiom Cloud$25/month
    • 1TB/month data loading included
    • 100 GB-hours compute included
    • 100GB storage included

Which should you pick?

Choose Sematext if

  • You need apm.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want metrics monitoring.
Sematext review

Choose Axiom if

  • You need serverless architecture.
  • You want to start without paying.
  • You work on Web (Chrome, Edge, Firefox, Safari), API.
  • You also want real-time processing.
Axiom review

Questions people ask

Is Sematext or Axiom better?
Neither clearly leads. Sematext starts at Free and Axiom at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Sematext or Axiom?
Sematext starts at Free and Axiom at Free.
Does Sematext or Axiom run on more platforms?
Sematext runs on Web, Api. Axiom runs on Web (Chrome, Edge, Firefox, Safari), API.
Can I use Sematext for free?
Both have a free tier, so you can try either at no cost before committing.
What is Sematext best used for?
Sematext is most often used for centralised log management and search across services, infrastructure and application monitoring alongside logs. Of those, centralised log management and search across services and infrastructure and application monitoring alongside logs are not what Axiom is typically brought in for.
What can Sematext do that Axiom cannot?
Sematext covers APM, Metrics monitoring, Anomaly detection. Axiom covers Serverless architecture, Real-time processing, AplLog query language, Cost-effective indexing. Both handle Log aggregation, API, Webhooks, REST.

Answered from the vendors’ own pages

Axiom: Does Axiom offer a free tier with no time limit?

Yes, Axiom's Personal plan is permanently free and includes 500GB of data ingest per month, 10 GB-hours of query compute, and 25GB storage with 30-day retention. No credit card is required.

Source
Axiom: Can I self-host Axiom or use my own cloud infrastructure?

No, Axiom is cloud-only. There is no self-hosted option, air-gapped deployment, or Bring Your Own Cloud available. The platform is a fully managed service.

Source
Axiom: What is Axiom's query language and does it work with SQL?

Axiom uses APL (Axiom Processing Language), based on Kusto Query Language. It is not standard SQL, and APL skills and queries do not transfer to other platforms, creating vendor lock-in.

Source
Axiom: What integrations does Axiom support for alerting?

Axiom supports pre-built integrations with Slack and PagerDuty, plus custom webhooks. Alerts can be configured via threshold-based, anomaly detection, or match-based monitors.

Source
Axiom: How does Axiom's pricing scale with data volume?

Axiom uses consumption-based pricing with automatic volume discounts. Costs depend on data loading volume, query compute usage (measured in GB-hours), and storage. The Team plan starts at $25/month with included allowances, then overage charges apply per unit with volume-based discounts.

Source
Axiom: What platforms can access Axiom's web interface?

Axiom's web app supports Chrome, Edge, Firefox, and Safari. Mobile access is supported on iOS and Android, but some features like moving dashboard elements are unavailable on mobile.

Source
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