
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: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
Market depth · Anthropic
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Book received (not venue quote time): —
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Private Companies - greatest valuation growth October 2026
Anthropic vs OpenAI - higher valuation on December 31?
Will Anthropic or OpenAI IPO first?
Will Anthropic or OpenAI introduce a US$2000 per month consumer-facing plan in 2026?
Anthropic + OpenAI vs Microsoft - higher valuation on December 31?
Will Anthropic, OpenAI and DeepMind voluntarily act in accordance with Trump’s executive order 14409 for all of 2026?
Rules
This market will resolve to the listed company with the larger percentage increase in private market valuation, as measured by the final NPM Price reported by Nasdaq Private Market, LLC (NPM), from the last trading day prior to the specified month (starting valuation) to last trading day of the specified month (ending valuation).
Free JSON for this market, no API key needed:
https://api.coinrithm.com/api/prediction-markets/events/polymarket/anthropic-vs-openai-greater-valuation-growth-october-2026AI agents: call pm_data_event on the CoinRithm MCP server:
https://mcp.coinrithm.com/mcp+77 more outcomes
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