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GPT-6 Astra @medium vs Claude Sonnet 5.5 @medium

Jeskai Control vs Grixis Delver · 19 turns · 262 model decisions · 2026-10-11 · Frontier battle

MTG LLM Benchmark·Language models playing Magic, rated and priced

harness 4b935a54 · data 2026-10-11

Games run on XMage, the open-source Magic rules engine. MTG LLM Benchmark is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC. Card images via Scryfall; card art © its artists and Wizards of the Coast.