AI Tools · head to head
Arize AI vs Buildkite

Arize AI
AI Tools
AI engineering platform for observability and evaluation of agents and LLM apps
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Arize AI the free plan caps trace spans at 25,000 per month with only 15 days of retention.; Buildkite free plan caps at 5 users and 10 concurrent jobs, with 2,000 Linux vCPU minutes per month and 30 day build retention
Where they differ
Only the attributes on which Arize AI and Buildkite actually diverge.
Identical on both: starting price (Free), pricing model (freemium), 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 Arize AI
- End-to-end tracing
- Evaluation framework
- Prompt testing and improvement
- Alyx AI engineering agent
- Custom dashboards
- Data warehouse integrations
Only in Buildkite
Nothing recorded that Arize AI does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Arize AI
- Tracing and debugging production AI agentsnot Buildkite
- Running large-scale evaluations across traces and sessionsnot Buildkite
- Improving prompts before production rolloutnot Buildkite
- Storing and querying GenAI traces alongside a data warehousenot Buildkite
Buildkite
No use cases recorded yet. See the Buildkite review.
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.
Buildkite
- Free plan caps at 5 users and 10 concurrent jobs, with 2,000 Linux vCPU minutes per month and 30 day build retention
- Pro plan is $30 per active user per month, capped at 50 users, with only 10 of the up to 250 concurrent agents included before extra usage
- Enterprise plan enforces a 30 user minimum even though pricing itself is custom
- Hosted compute beyond included minutes is metered at $0.004 per vCPU minute on Linux and $0.02 per vCPU minute on Mac
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
Buildkite
FreeNo published plan breakdown. See the Buildkite review.
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.
Questions people ask
- Is Arize AI or Buildkite better?
- Neither clearly leads. Arize AI starts at Free and Buildkite at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Arize AI or Buildkite?
- Arize AI starts at Free and Buildkite at Free.
- Does Arize AI or Buildkite run on more platforms?
- Arize AI runs on web, api. Buildkite runs on Web.
- Can I use Arize AI for free?
- Both have a free tier, so you can try either at no cost before committing.
- 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 Buildkite is typically brought in for.
- What can Arize AI do that Buildkite cannot?
- Arize AI covers End-to-end tracing, Evaluation framework, Prompt testing and improvement, Alyx AI engineering agent.
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.
SourceArize 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.
SourceArize 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.
SourceRelated pages
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- Buildkite vs Together AI
- Buildkite vs AI21 Labs
- Buildkite vs Copy.ai
- Buildkite vs HeyGen
- Buildkite vs ESLint
- Buildkite vs pnpm
- Buildkite vs Turborepo
- Buildkite vs GitHub Copilot
- Buildkite vs Eclipse IDE
- Buildkite vs Yarn
- Buildkite vs CodeSandbox
- Buildkite vs Daytona
- Buildkite vs Ansible
- Buildkite vs Prettier
- Buildkite vs StackBlitz
- Buildkite vs Vite
- Buildkite vs Webpack
- Buildkite vs Argo CD
- Buildkite vs Azure DevOps
- Buildkite vs Bitbucket
- Buildkite vs Claude Code
- Buildkite vs Coder

