Is Arize AI or Heroku better?

Neither clearly leads. Arize AI starts at Free and Heroku at $7/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Arize AI or Heroku?

Arize AI has a free tier; the other does not. Paid plans start at Free for Arize AI and $7/month for Heroku.

Does Arize AI or Heroku run on more platforms?

Arize AI runs on web, api. Heroku runs on Web, Api, Workers.

Can I use Arize AI for free?

Yes. Arize AI has a free tier, so you can try it without paying. Heroku starts at $7/month.

What is Arize AI best used for?

Arize AI is most often used for tracing and debugging production ai agents, running large-scale evaluations across traces and sessions, improving prompts before production rollout, storing and querying genai traces alongside a data warehouse. Of those, tracing and debugging production ai agents and running large-scale evaluations across traces and sessions are not what Heroku is typically brought in for.

What can Arize AI do that Heroku cannot?

Arize AI covers End-to-end tracing, Evaluation framework, Prompt testing and improvement, Alyx AI engineering agent. Heroku covers Git-based deployment, Buildpacks, Dynos (containers), Add-ons marketplace.

AI Tools · head to head

Arize AI vs Heroku

Arize AI

AI Tools

AI engineering platform for observability and evaluation of agents and LLM apps

From: Free
Rated: -

Full review Website

Heroku

Cloud & Infrastructure

Cloud Application Platform

From: $7/month
Rated: -

Full review Website

The short version

Only Arize AI has a free tier, so it costs nothing to try first.
Each has a real cost: Arize AI the free plan caps trace spans at 25,000 per month with only 15 days of retention.; Heroku there is no free dyno tier; the cheapest Eco dyno is $5 per month
They diverge on capability: Arize AI covers End-to-end tracing, Heroku covers Git-based deployment.

Where they differ

Only the attributes on which Arize AI and Heroku actually diverge.

Attributes where Arize AI and Heroku differ
Attribute	Arize AI	Heroku
Starting price	Free	$7/month
Pricing model	freemium	subscription
Free tier	Yes	No
Platforms	web, api	Web, Api, Workers
Category	AI Tools	Cloud & Infrastructure
Founded	Unknown	2007

Identical on both: 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 Arize AI

End-to-end tracing
Evaluation framework
Prompt testing and improvement
Alyx AI engineering agent
Custom dashboards
Data warehouse integrations

Only in Heroku

Git-based deployment
Buildpacks
Dynos (containers)
Add-ons marketplace
Postgres database
Environment variables
Logging
API

What people use each for

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

Arize AI

Tracing and debugging production AI agentsnot Heroku
Running large-scale evaluations across traces and sessionsnot Heroku
Improving prompts before production rolloutnot Heroku
Storing and querying GenAI traces alongside a data warehousenot Heroku

Heroku

Deploying and scaling web applications with git push and no server administrationnot Arize AI
Running managed Postgres, Redis and Kafka as attached data servicesnot Arize AI
Isolated production environments in a Private Space for regulated workloadsnot Arize AI

Where each one falls short

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

Arize AI

The free plan caps trace spans at 25,000 per month with only 15 days of retention.
Self-hosted deployment and Data Fabric integration are restricted to the custom-priced Enterprise tier.
Pricing beyond the $50/month Pro plan requires a custom quote, making cost planning less transparent at scale.
Advanced compliance features like HIPAA are only available on Enterprise.

Heroku

There is no free dyno tier; the cheapest Eco dyno is $5 per month
Eco dynos sleep after 30 minutes of inactivity, are restricted to personal accounts and allow only 2 process types
Free SSL and 10 process types start at the Basic dyno at $7 per month
Private and Shield dyno types require a Private Space, which is billed on top of the dynos
Private Space dynos start at $250 per month for Private-M and $500 per month for Private-L
Dyno prices are per dyno per month, so an app with several process types multiplies the bill

Pricing, plan by plan

Arize AI

Free

AX FreeFree
- 25k trace spans/month
- 1 GB storage/month
- 15-day retention
AX Pro$50/month
- 50k trace spans/month
- 10 GB storage/month
- 30-day retention
AX Enterprise$undefined/mo
- Custom trace spans, storage, and retention
- SaaS or self-hosted deployment
- Managed agents and Data Fabric

Heroku

$7/month

Hobby$7/month
- 512MB RAM
- Shared CPU
- 1 web dyno
Standard$50/month
- 512MB RAM
- Dedicated CPU
- Automatic scaling

Which should you pick?

Choose Arize AI if

You need end-to-end tracing.
You want to start without paying.
You work on web, api.
You also want evaluation framework.

Arize AI review

Choose Heroku if

You need git-based deployment.
You work on Web, Api, Workers.
You also want buildpacks.

Heroku review

Questions people ask

Is Arize AI or Heroku better?: Neither clearly leads. Arize AI starts at Free and Heroku at $7/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arize AI or Heroku?: Arize AI has a free tier; the other does not. Paid plans start at Free for Arize AI and $7/month for Heroku.
Does Arize AI or Heroku run on more platforms?: Arize AI runs on web, api. Heroku runs on Web, Api, Workers.
Can I use Arize AI for free?: Yes. Arize AI has a free tier, so you can try it without paying. Heroku starts at $7/month.
What is Arize AI best used for?: Arize AI is most often used for tracing and debugging production ai agents, running large-scale evaluations across traces and sessions, improving prompts before production rollout, storing and querying genai traces alongside a data warehouse. Of those, tracing and debugging production ai agents and running large-scale evaluations across traces and sessions are not what Heroku is typically brought in for.
What can Arize AI do that Heroku cannot?: Arize AI covers End-to-end tracing, Evaluation framework, Prompt testing and improvement, Alyx AI engineering agent. Heroku covers Git-based deployment, Buildpacks, Dynos (containers), Add-ons marketplace.

Answered from the vendors’ own pages

Arize AI: What does Arize AX cost?

Arize AX offers a free plan, a Pro plan at $50/month, and a custom-priced Enterprise plan, with pricing based on trace spans, storage, and retention needs.

Source

Arize AI: Is there a free plan, and what are its limits?

The AX Free plan includes 25,000 trace spans and 1 GB of storage per month with 15-day retention, plus unlimited users, evaluations, and experiments.

Source

Arize AI: What deployment options are available?

Free and Pro plans are SaaS-only, while Enterprise customers can choose SaaS or self-hosted deployment with custom SLAs.

Source

Arize AI vs Heroku

Arize AI

Heroku

The short version

Where they differ

What each one covers

Only in Arize AI

Only in Heroku

What people use each for

Arize AI

Heroku

Where each one falls short

Arize AI

Heroku

Pricing, plan by plan

Arize AI

Heroku

Which should you pick?

Choose Arize AI if

Choose Heroku if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Arize AI

More on Heroku

Keep looking

Other head to heads