ToneBench updates https://benchmark.towardsai.com/ Updates from the Towards AI writing benchmark and model leaderboard. en-us Wed, 12 Aug 2026 16:27:00 +0000 ToneBench update: Claude Opus 5 (max effort) leads the AI writing board https://benchmark.towardsai.com/ tonebench-board-2026-08-12 Wed, 12 Aug 2026 16:27:00 +0000 Claude Opus 5 (max effort) ranks first at 90.8/100 (Elo 2649) across 130 current models and 9 real scripts. Compare the leading AI writing models head-to-head https://benchmark.towardsai.com/compare/ tonebench-comparisons-2026-08-12 Wed, 12 Aug 2026 16:27:00 +0000 ToneBench comparisons cover overall scores, nine writing metrics, cost, consistency, and reviewed editorial verdicts.