
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Kalshi
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · $25/MTok or below
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Related questions for context, not a comparison of equivalent contracts.
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Rules
If the Output Token Price of OpenAI GPT 5.5 on https://openai.com/api/pricing/ is at or below $25 in 2026, then the market resolves to Yes.
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/kalshi/kxgbt55oy-27AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+14 more outcomes
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