
SpecialistGoogle's AI tool for generating mobile and web UI designs from prompts
SpecialistGoogle's AI tool for generating mobile and web UI designs from prompts
Flowstep records 89,017 monthly visits with -24.3% month-over-month growth and Free, Paid, Contact for Pricing pricing. OpenRouter records 19,941,437 monthly visits with -6.2% growth and Paid pricing.

The design canvas built for AI coding agents
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | flowstep.ai | openrouter.ai |
| Pricing Model | Free, Paid, Contact for Pricing | Paid |
| Monthly Visits | 89.02K (89,017) | 19.94M (19,941,437) |
| MoM Traffic Delta | -28.53K (-24.3%) | -1.33M (-6.2%) |
| Primary Market & Share | 🇺🇸 United States (17.2%) | 🇺🇸 United States (16.1%) |
| Direct Visits / mo | 42.94K | 11.96M |
| User Rating | 4.2 | 4.8 |
| Supported Platforms | Website | Website |

The design canvas built for AI coding agents
Generate complete, multi-screen interfaces from a text prompt, PRD, screenshot or pasted product URL rather than a single static screen.
Every design maps directly to code, so you can preview interactive prototypes quickly or export and ship the implementation.
Iterate by asking the AI for changes, or click any element and edit it by hand — the two modes work on the same file.
Connect Cursor, Claude Code, Windsurf or Codex so agents can generate screens and edit designs inside your editor.
One API key for hundreds of AI models from every major provider
Six hundred plus models for text, image, video, audio, transcription, embeddings, and reranking behind one OpenAI-compatible API.
Requests are rerouted to another provider on outages or rate limits by default, so you don't write custom retry logic.
The auto-router selects a model and provider per request using live marketplace performance and pricing data.
Track spend, tokens, and usage per model, provider, and team member in one place, including bring-your-own-key usage.

SpecialistGoogle's AI tool for generating mobile and web UI designs from prompts
SpecialistGoogle's AI tool for generating mobile and web UI designs from prompts

Offers robust serverless inference and GPU clusters for open models, but features a narrower selection of proprietary models.
Offers robust serverless inference and GPU clusters for open models, but features a narrower selection of proprietary models.
SpecialistA searchable library of 145,000+ real web and iOS screens for UI/UX inspiration.
SpecialistA searchable library of 145,000+ real web and iOS screens for UI/UX inspiration.
Features adaptive LLM routing and automatic failover, but lacks OpenRouter's massive ecosystem of community-rated model endpoints.
Features adaptive LLM routing and automatic failover, but lacks OpenRouter's massive ecosystem of community-rated model endpoints.
SpecialistDelivers exceptional inference speed and high-throughput performance for open models, but focuses primarily on hosted weights rather than multi-provider aggregation.

Free / Open-sourceProvides self-hosted and Python SDK control over 100+ LLMs, but requires setting up your own infrastructure.

SpecialistFrom idea or sketch to editable wireframes, hi-fi UI and code in minutes
SpecialistFrom idea or sketch to editable wireframes, hi-fi UI and code in minutes

SpecialistLow-cost serverless inference APIs for 200+ open models

One unified API for 100+ AI models, with insurance when output disappoints
One unified API for 100+ AI models, with insurance when output disappoints
SpecialistTurn flat screenshots, PDFs and slides back into editable designs and code
SpecialistTurn flat screenshots, PDFs and slides back into editable designs and code

SpecialistAI-powered UI design and prototyping for product teams
SpecialistAI-powered UI design and prototyping for product teams
One API for fast, cost-predictable inference on LLMs and multimodal models
One API for fast, cost-predictable inference on LLMs and multimodal models