toolgrep / Analytics & data / Octagon

Alternatives to Octagon

Octagon: Prediction market research and analytics comparing model probabilities to live Kalshi and Polymarket prices, cited to source. 8 products similar to Octagon, compared on pricing, free tier, API, MCP server, SDK and open source. 7 of 8 have a free tier, 8 of 8 have an API, 8 of 8 offer an MCP server, 2 of 8 are open source.

• MarketMaster

  One normalized prediction market API for Kalshi and Polymarket

  APIs & backend free tierAPIMCPSDK

• pdata

  Read-only aggregator of live prediction-market data across 8 platforms, exposed via REST, MCP, and read-only Postgres.

  Analytics & data free tierAPIMCPSDK

• Knoww

  Prediction markets for every opinion

  Other free tierAPIMCP

• PMWallets

  Polymarket MCP server and CLI for AI agents: trader leaderboard, trader records, and real-time fill feed

  MCP servers free tierAPIMCPSDKopen source

• Pollen

  Make AI agents choose your store

  Other free tierAPIMCP

• Future AGI

  Open-source, end-to-end AI agent engineering platform covering simulation, evaluation, optimization, monitoring, guardrails, and gateway.

  AI agents & frameworks free tierAPIMCPSDKopen source

• Pollinations.ai

  Open infrastructure for AI-natives. Models. Agents. Tools. One API.

  AI models & inference APIMCP

• Countersignatory

  The going rate for a human minute

  AI agents & frameworks free tierAPIMCPSDK

Side by side

Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.

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