#gpt-5-6

Arena.ai says scores for GPT-6 Sol and GPT-6 Luna are coming soon

OpenAI’s two models can be tested on Arena, where votes on real-world agentic tasks feed the leaderboard. Arena.ai says petergostev has also compared GPT-6 Sol with GPT-5.6 Sol using the same prompts at max reasoning.

OpenAI says GPT-6 Sol and Luna build on Astra’s alignment advances

OpenAI says both models show improvements over their GPT-5.6 counterparts.

LangChain reports Jev matched a human reviewer vs GPT-5.6 and Claude Sonnet 4.6 as agent-eval judges

LangChain said it tested Jev against GPT-5.6 Luna, GPT-5.6 Terra, and Claude Sonnet 4.6 as agent-eval judges, reporting a human-reviewer match on every call, up to 913x lower variance, 0.44s per call, and a $0.34 full-run cost versus $28.17 with Claude Sonnet 4.6.