GPT-5.6 Sol xHigh

GPT-5.6 Sol xHigh stands as OpenAI's highest-ranking model on the LMSYS Arena text leaderboard, earning an Elo rating of 1485 across 38,490 independent evaluations. Announced in October 2026, the model features an industry-leading 1.1-million-token context window and an overall capability index of 69.4. Standard API pricing is configured between $4.00 and $8.00 per 1M input tokens, while GPT-5.6 Sol excels in agentic tool orchestration, real-time code execution, and high-fidelity enterprise data synthesis, cementing OpenAI's foundational role in widespread production deployments.

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