Arize AI records 249,028 monthly visits with +3.2% month-over-month growth and Paid, Contact for Pricing pricing. Mastra records 318,954 monthly visits with -5% growth and Freemium, Contact for Pricing pricing.
Agent observability, evaluation, and continuous improvement for production AI
The TypeScript framework for building, deploying, and observing AI agents
| Dimension / Metric | | |
|---|---|---|
| Official Domain | arize.com | mastra.ai |
| Pricing Model | Paid, Contact for Pricing | Freemium, Contact for Pricing |
| Monthly Visits | 249.03K (249,028) | 318.95K (318,954) |
| MoM Traffic Delta | +7.67K (+3.2%) | -16.74K (-5%) |
| Primary Market & Share | 🇺🇸 United States (51.6%) | 🇺🇸 United States (21.3%) |
| Direct Visits / mo | 107.84K | 139.22K |
| User Rating | 4.6 | 4.6 |
| Supported Platforms | Website | Website |
Agent observability, evaluation, and continuous improvement for production AI
Capture spans, traces, and sessions across agents and LLM calls using OpenInference conventions built on OpenTelemetry, so instrumentation stays portable.
Run evaluations at span, trace, and session level to grade retrieval quality, tool use, and final answers across large production datasets.
An in-product agent that inspects traces, diagnoses likely root causes, and proposes fixes that engineers can review before shipping.
Self-host the leading open-source tracing and eval tool when you need to keep trace data inside your own infrastructure.
The TypeScript framework for building, deploying, and observing AI agents
Define agents with instructions, models, tools, and runtime behavior, then compose typed workflow steps with retries and branching in TypeScript.
Give agents long-lived context with observational memory, semantic recall, and thread-aware storage.
Traces, metrics, logs, and datasets show every model call, tool call, and handoff in a searchable timeline.
Score agent runs against repeatable checks and experiments before changes reach production.
SpecialistA robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors.
SpecialistA robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors.
SpecialistA developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps.
SpecialistA developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps.
Free / Open-sourceA comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript.
Free / Open-sourceA comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript.
Excels at experiment tracking and model registry workflows, but is less purpose-built for real-time LLM production observability.
Excels at experiment tracking and model registry workflows, but is less purpose-built for real-time LLM production observability.
Free / Open-sourceAn open-source AI automation platform combining conversational workflow drafting, visual flow builders, and prebuilt app connectors.
Free / Open-sourceAn open-source AI automation platform combining conversational workflow drafting, visual flow builders, and prebuilt app connectors.
SpecialistAn open-source AI workspace combining visual workflows and code for building and governing agent systems.
Free / Open-sourceA popular Python-based agent framework offering modular building blocks, tailored for Python developers rather than TypeScript.
Free / Open-sourceIncludes integrated guardrails and simulation tools, but is less mature for large-scale enterprise production telemetry monitoring.
Free / Open-sourceIncludes integrated guardrails and simulation tools, but is less mature for large-scale enterprise production telemetry monitoring.
Free / Open-sourceFeatures strong testing and prompt evaluation tools, though its monitoring interface is less oriented towards massive telemetry streams.
Free / Open-sourceFeatures strong testing and prompt evaluation tools, though its monitoring interface is less oriented towards massive telemetry streams.
Focuses heavily on prompt management and versioning control, whereas Arize prioritizes end-to-end tracing and ML observability.
Focuses heavily on prompt management and versioning control, whereas Arize prioritizes end-to-end tracing and ML observability.
Offers comprehensive LLM evaluation and unit testing via DeepEval, but lacks Arize's deep production monitoring infrastructure.
Offers comprehensive LLM evaluation and unit testing via DeepEval, but lacks Arize's deep production monitoring infrastructure.
Free / Open-sourceAgent observability, evals and governance for AI platform teams
Free / Open-sourceAgent observability, evals and governance for AI platform teams
