
Offers vastly more powerful database and project management features, but is less visually polished for simple note-taking.
Arize AI records 249,028 monthly visits with +3.2% month-over-month growth and Paid, Contact for Pricing pricing. Craft records 703,417 monthly visits with +8.9% growth and Freemium pricing.

Agent observability, evaluation, and continuous improvement for production AI
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | arize.com | craft.do |
| Pricing Model | Paid, Contact for Pricing | Freemium |
| Monthly Visits | 249.03K (249,028) | 703.42K (703,417) |
| MoM Traffic Delta | +7.67K (+3.2%) | +57.54K (+8.9%) |
| Primary Market & Share | 🇺🇸 United States (51.6%) | 🇺🇸 United States (21.2%) |
| Direct Visits / mo | 107.84K | 368.32K |
| 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.
A polished space for notes, tasks, and documents that follows you across every device.
Embed tasks directly inside documents and pair them with a calendar view so planning and execution stay connected.
Choose the structure that matches your thinking — separate work and personal spaces, nested folders, tags, or database-style collections.
Draft, refine, rewrite and summarize content without leaving the document.
Apps for iPhone, iPad, Mac, Vision Pro, Windows and Android with local access when you're offline.

Offers vastly more powerful database and project management features, but is less visually polished for simple note-taking.

SpecialistHandwritten notes, PDF markup, and AI study tools on one canvas
SpecialistHandwritten notes, PDF markup, and AI study tools on one canvas

SpecialistAn extendable launcher that puts your tools, AI, and automations one keystroke away
SpecialistAn extendable launcher that puts your tools, AI, and automations one keystroke away

SpecialistAutomates task scheduling and calendar management with AI, but lacks Craft's elegant document and note-taking canvas.
SpecialistAutomates task scheduling and calendar management with AI, but lacks Craft's elegant document and note-taking canvas.

Organizes notes into connected typed objects rather than traditional pages, offering a different but structured knowledge system.
Organizes notes into connected typed objects rather than traditional pages, offering a different but structured knowledge system.

Combines documents and relational tables with powerful automation, but has a steeper learning curve than Craft's clean UI.
Combines documents and relational tables with powerful automation, but has a steeper learning curve than Craft's clean UI.

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.

SpecialistADHD-friendly AI assistant for notes, email and tasks
SpecialistADHD-friendly AI assistant for notes, email and tasks

SpecialistTasks, calendar and an AI sidekick in one time-blocking planner
SpecialistTasks, calendar and an AI sidekick in one time-blocking planner

Unifies files, notes, and search into an AI cloud drive, but lacks Craft's structured page-and-block document hierarchy.
Unifies files, notes, and search into an AI cloud drive, but lacks Craft's structured page-and-block document hierarchy.

Unifies tasks, calendars, and notes into a daily planner workflow, but focuses more on time management than document editing.
Unifies tasks, calendars, and notes into a daily planner workflow, but focuses more on time management than document editing.

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.