Offers advanced no-code form customization and robust database integrations, but with slightly less automated AI generation.
Arize AI records 249,028 monthly visits with +3.2% month-over-month growth and Paid, Contact for Pricing pricing. forms.app records 987,157 monthly visits with -11.2% growth and Freemium, Paid pricing.

Agent observability, evaluation, and continuous improvement for production AI
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | arize.com | forms.app |
| Pricing Model | Paid, Contact for Pricing | Freemium, Paid |
| Monthly Visits | 249.03K (249,028) | 987.16K (987,157) |
| MoM Traffic Delta | +7.67K (+3.2%) | -124.04K (-11.2%) |
| Primary Market & Share | 🇺🇸 United States (51.6%) | 🇧🇷 Brazil (26.1%) |
| Direct Visits / mo | 107.84K | 595.53K |
| User Rating | 4.6 | 4.2 |
| 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.
Build forms, surveys and quizzes in seconds — with unlimited free responses
Assemble forms, surveys, quizzes and polls visually, then brand them with custom themes and your own domain.
Describe what you need and the AI drafts the full form; it can also rephrase questions and generate multiple-choice answer options.
Automate the path from submission to spreadsheet, CRM or internal system without manual copying.
Start from reviewed templates for applications, bookings, feedback, HR, events and interactive quizzes.
Offers advanced no-code form customization and robust database integrations, but with slightly less automated AI generation.

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.
SpecialistFocuses heavily on end-to-end encryption and privacy, trading some ease of design for high-security data collection.
SpecialistFocuses heavily on end-to-end encryption and privacy, trading some ease of design for high-security data collection.

Provides seamless AI-native form generation from text prompts, matching forms.app's speed with cleaner modern layouts.

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.

SpecialistExcels at building interactive quizzes and polls for lead capture, offering richer marketing funnel features than forms.app.
SpecialistExcels at building interactive quizzes and polls for lead capture, offering richer marketing funnel features than forms.app.

Free AI form builder for humans and AI agents

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-sourceAn open-source form builder offering AI assistance and unlimited submissions, ideal for self-hosting and data privacy.

Free / Open-sourceAgent observability, evals and governance for AI platform teams
Free / Open-sourceAgent observability, evals and governance for AI platform teams