Summary
This video pits two of the most capable AI coding agents head-to-head in a live trading experiment: Claude Code running Opus 4.7 versus Codex CLI running GPT 5.5, each given $50 in a Polymarket wallet and one hour to generate profit trading Bitcoin 5-minute up/down contracts.
The creator walks through the full setup in detail — funding MATIC gas on both wallets, writing a shared competition prompt that pushes each model to do independent research and build an uninterrupted trading algorithm, and running both agents in plan mode before launch. Codex 5.5 settled on a ChainLink-sentiment strategy that tries to read market direction faster than the order book, while Claude Opus 4.7 took a late-window entry approach — waiting until the last seconds of each 5-minute window when the outcome is nearly decided and buying the winning side at a discount.
Before the hour-long run begins, both agents build their own real-time monitoring UIs showing PnL, balance, and time remaining, which the creator displays side by side. The video offers a practical look at how modern AI coding agents approach open-ended agentic tasks, handle financial API documentation, and diverge in strategy when given identical prompts — making it useful for anyone evaluating Claude Code versus Codex CLI for autonomous agent work.
📺 Source: All About AI · Published May 25, 2026
🏷️ Format: Comparison
