Agent Arena puts GPT-5.6 Sol at +10.1% in agent-task net improvement
arena · x · 2026-07-28
Agent Arena’s latest leaderboard shows GPT-5.6 Sol at the top end of the table for agentic tasks, with a +10.1% net improvement at xHigh.
- GPT-5.6 Sol: +10.1%
- GPT-5.6 Terra: +4.0%
- GPT-5.6 Luna: +3.3%
- All three variants sit near Claude Opus 4.8 (+3.5%) on the same leaderboard.
The post highlights that the new GPT-5.6 variants are all posting positive gains in agent orchestration benchmarks, not just the headline model.
Related event: Agent Arena: Claude Opus 5 Outperforms GPT-5.6 Variants(4 posts)→
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