Langtail records 4,213 monthly visits with +10% month-over-month growth and Freemium, Paid pricing. PromptBros records 212 monthly visits with -68.9% growth and Freemium pricing.
Prompt management, evaluation, and guardrails for production LLM apps
A marketplace and workspace to store, test, and share AI prompts and agents
| Dimension / Metric | | |
|---|---|---|
| Official Domain | langtail.com | promptbros.ai |
| Pricing Model | Freemium, Paid | Freemium |
| Monthly Visits | 4.21K (4,213) | 212 (212) |
| MoM Traffic Delta | +382 (+10%) | -470 (-68.9%) |
| Primary Market & Share | 🇺🇸 United States (51.2%) | 🇹🇷 Türkiye (54.7%) |
| Direct Visits / mo | 1.68K | 85 |
| User Rating | 4.4 | 4 |
| Supported Platforms | Website | Website |
Prompt management, evaluation, and guardrails for production LLM apps
Build, test, and version prompts in a table-based editor that anyone comfortable with spreadsheets can use.
Add natural-language assertions, pattern matching, or custom code checks and run them over datasets to catch regressions.
Trace every request and response, inspect latency and cost, and diagnose why an LLM answered the way it did.
One-click AI Firewall blocks prompt injection, denial-of-service attempts, and information leaks with customisable content filtering and alerts.
A marketplace and workspace to store, test, and share AI prompts and agents
A searchable, filterable marketplace where you can discover community prompts and agents, save them, and use them with a click.
Run prompts across the latest commercial generative AI models from leading providers without switching between separate tools or accounts.
A backoffice for creating, testing, and iterating on prompts and agents, with your interactions, assets, and data kept organized in one space.
A customizable public or private profile page for showcasing your prompts, agents, and AI chats, with layouts, tags, and color options.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
SpecialistTurn lazy prompts into great ones and get more out of any large language model
SpecialistTurn lazy prompts into great ones and get more out of any large language model
GenAI-native end-to-end QA agent that plans, writes and heals tests in plain language
Analyze, optimize and organize prompts in one AI workspace
Analyze, optimize and organize prompts in one AI workspace
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Turn rough ideas into model-ready prompts in seconds
Write end-to-end test automation in plain English, no code required
Write end-to-end test automation in plain English, no code required
The collaboration layer for AI engineering teams
The collaboration layer for AI engineering teams
Standardize LLM evaluation, observability, and red teaming across your whole org
Standardize LLM evaluation, observability, and red teaming across your whole org
Free / Open-sourceOpen-source workspace for building, evaluating and shipping AI agents
Free / Open-sourceOpen-source workspace for building, evaluating and shipping AI agents
Free / Open-sourceThe open-source collaboration OS where people and AI agents work in one shared workspace.
Free / Open-sourceThe open-source collaboration OS where people and AI agents work in one shared workspace.
