Langbot vs MarketPlays

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Langbot compared with MarketPlays
Detail	Langbot	MarketPlays
What it does	Data and simulation layer for prediction markets on Kalshi and Polymarket	You call the theme, we build the basket.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Freemium	Freemium
Pricing	Free ($0/month) with 60-second delay on live data, 60 API requests/minute, 1 concurrent stream, 5 subscriptions, 20 sim runs/month; Builder ($49/month) with 10-second delay, 600 requests/minute, 5 streams, 25 subscriptions, 100 sim runs/month; Standard ($199/month) with 2-second delay, 3,000 request	Free: create account, pick themes, build portfolio, join discussions, connect 1 brokerage, place 1 trade, access AI research and watchlists. Pro: $9.99/month on web (7-day free trial), $11.99/month on Android, $14.99/month on iPhone; yearly plans save about 30%. Pro includes unlimited themes from 35
Key features	Order-book history with outcomes and rules for every market on Kalshi and Polymarket Live context synchronized on one clock: speech, official text and data releases Simulator with venue's real fees and timing for backtesting Full REST, WebSocket and SSE access with signed webhooks Python and TypeScript SDKs and CLI for programmatic access MCP server with phrase and market subscription tools Fair-value and live probability models for markets Signed receipts and provenance reports for evidence Paper trading mode on live record before switching to real exchange keys Timestamped facts for resolved market outcomes with speaker attribution	350+ investment themes Customizable ETF and crowd blend Real portfolio syncing via SnapTrade AI stock research Community discussions One-click basket investing Connects to 9 brokerages Portfolio change history Live intraday chart (Pro) Daily portfolio updates (Pro)
What makes it different	Synchronized context on the same clock: order books, market rules, and every speech or data release that moves prices Speaker attribution and verdict for each phrase: whether it counts under market rules Live recording of order books for every open market rolling out No trading signals: users control all decisions and trades with their own exchange keys	Blend real ETF holdings with actual investor holdings to see where money is moving No copying a single investor or fund; uses aggregated anonymous investor data Money and positions stay in your existing brokerage No personalized investment advice or automatic trading Explore unlimited themes and research for free
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	10 no change since last check
Trust Flow (Majestic)	0	4
Citation Flow (Majestic)	0	23
Referring domains (Majestic)	0	29

5 details filled in for both companies.

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