A new evaluation designed to test diplomatic negotiation skills revealed that GPT-6.1 Sol was the only one of eleven tested large language models to successfully pass all 40 runs of the complex simulation. The model consistently achieved agreement when possible and correctly identified when a deal was not feasible. However, GPT-6.1 Sol did exhibit a tendency to make more unprompted concessions than other models, sometimes agreeing to terms that were more favorable than necessary. AI
IMPACT Demonstrates advanced reasoning and negotiation capabilities in LLMs, potentially impacting future AI applications in diplomacy and complex decision-making.
RANK_REASON New benchmark evaluation of LLM capabilities. [lever_c_demoted from research: ic=1 ai=1.0]
- Claude Opus 5.5
- DeepSeek V4.1 Flash
- Gemini 4 Argon
- GLM 5.3 Prime
- GPT-6.1 Sol
- Grok 4.7
- MiniMax M3.1 Flash
- .openai
- Qwen 3.8 Max Prime
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