Kiro records 3,330,476 monthly visits with +4.6% month-over-month growth and Freemium pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.
A spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.
High-quality human data for AI training, evaluation, and research
| Dimension / Metric | ||
|---|---|---|
| Official Domain | kiro.dev | prolific.com |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 3.33M (3,330,476) | 18.7M (18,697,671) |
| MoM Traffic Delta | +145.23K (+4.6%) | -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (16.3%) | 🇺🇸 United States (48.8%) |
| Direct Visits / mo | 1.81M | 12.98M |
| User Rating | 4.5 | 4.6 |
| Supported Platforms | Website | Website |
A spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.
You describe intent and context first; Kiro captures requirements and design as specifications, then verifies the finished implementation against them.
Kiro Crew watches your backlog, codebase, or CI, triages new work, delegates to specialized bots, and returns results for your review.
Long tasks split into checked steps so agents cannot shortcut a failed test, and review agents inspect diffs before a human approves a merge.
Use the IDE, mobile, or web, run headless in CI/CD with the CLI, or trigger Kiro from Slack, Microsoft Teams, GitHub, and GitLab.
High-quality human data for AI training, evaluation, and research
Filter participants by detailed demographic, professional, and behavioural criteria and reach narrow or representative samples rather than a generic crowd.
Collect human preference data for model fine-tuning, run safety evaluations and red-teaming, and use a feedback API to plug humans into automated pipelines.
Attention checks, honesty screening, and approval workflows help filter out careless or fraudulent responses before you analyse results.
Publish a study and begin collecting responses quickly, with tooling that supports screening, quotas, and longitudinal designs.
Provides a polished AI-first code editor experience, but lacks Kiro's native AWS spec-driven planning workflows.
Provides a polished AI-first code editor experience, but lacks Kiro's native AWS spec-driven planning workflows.
Offers powerful parallel AI coding agents across an IDE and CLI, but lacks dedicated AWS ecosystem integrations.
Offers powerful parallel AI coding agents across an IDE and CLI, but lacks dedicated AWS ecosystem integrations.
Builds and deploys full-stack apps instantly in the cloud, but lacks Kiro's local spec-driven engineering verification.
Builds and deploys full-stack apps instantly in the cloud, but lacks Kiro's local spec-driven engineering verification.
Free / Open-sourceWrite code with precision, hand bigger jobs to agents, and keep working from anywhere
Free / Open-sourceWrite code with precision, hand bigger jobs to agents, and keep working from anywhere
Reads entire codebases to execute multi-file tasks as an IDE plugin, but offers less structured spec management.
Reads entire codebases to execute multi-file tasks as an IDE plugin, but offers less structured spec management.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
SpecialistOperates fully autonomously across entire repositories to open pull requests, but lacks an integrated interactive IDE workspace.
SpecialistOperates fully autonomously across entire repositories to open pull requests, but lacks an integrated interactive IDE workspace.
Free / Open-sourceRuns multiple CLI coding agents in parallel using isolated Git worktrees, but requires manual setup over managed IDEs.
Free / Open-sourceRuns multiple CLI coding agents in parallel using isolated Git worktrees, but requires manual setup over managed IDEs.
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
Delivers a fast AI-powered IDE environment for full projects, but lacks Kiro's strict architectural spec verification.
Delivers a fast AI-powered IDE environment for full projects, but lacks Kiro's strict architectural spec verification.
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.
SpecialistAI data infrastructure for building production-grade models
SpecialistAI data infrastructure for building production-grade models
