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Langbot vs OptionSpace

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 OptionSpace
DetailLangbot logo LangbotOptionSpace logo OptionSpace
What it doesData and simulation layer for prediction markets on Kalshi and Polymarket Volatility data and research tools powered by a market-maker-grade fitting and pricing engine
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFreemium Freemium
PricingFree ($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 sample plan with no card required. Retail subscription available for individual personal use in the United States with daily limits on API credits. Institutional plans available at contact pricing for any business use with annual licenses invoiced monthly via ACH or wire. Higher-frequency data
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
  • Fitted volatility surfaces with bid-ask-weighted curves across every expiration
  • Accounts for American-style options with early exercise, discrete dividends, and implied borrow rates
  • One-minute granularity historical data across 140+ symbols spanning 10 years
  • Realized volatility calculations from 385 intraday returns per day
  • Vol Screener, Vol Premium, Skew Scanner, and Earnings Vol analysis tools
  • Historical simulation using actual bid-ask prices and fitted vol surfaces
  • Python package for research workflows
  • Interactive visual dashboards for surface inspection and event studies
  • Model Context Protocol (MCP) integration for AI agent workflows
  • Greeks and constant-maturity metrics via API and dashboards
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
  • Arbitrage-free fitted volatility wings extending beyond quoted book using Lee-moment discipline
  • Accessible to quantitative researchers and AI workflows through Python, API, and MCP without requiring market-maker infrastructure
  • 10 years of consistent historical data at one-minute granularity across 140+ symbols for rigorous backtesting
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)00
Referring domains (Majestic)00

5 details filled in for both companies.

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