AIClaude Opus 5 and GPT 5.6 Terra join the BALROG leaderboard
A post announcing the update places Terra between Luna and Sol and says Opus 5 comes close to GPT-6 astra, but falls short.
TLDR
Claude Opus 5 and GPT 5.6 Terra are new BALROG leaderboard entries, both at maximum reasoning effort, according to a post announcing the update. The author places Terra between Luna and Sol and describes Opus 5 as approaching—but not matching—GPT-6 astra.
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Claude Opus 5 and GPT 5.6 Terra join the BALROG leaderboard
A post announcing the update places Terra between Luna and Sol and says Opus 5 comes close to GPT-6 astra, but falls short.