OpenAI ships closed-weight GPT-6.1 Sol at $2 input, $10 output per 1M tokens

OpenAI 发布闭源模型 GPT-6.1 Sol，定价为输入 $2 / 输出 $10 每 1M tokens

OpenAI released the closed-weight model GPT-6.1 Sol on September 29, 2026, priced at $2 per 1M input tokens and $10 per 1M output tokens. Listed top scores include 94% on FrontierMath Tiers 1-3 (v2), 100% on FrontierMath Tier 4 (v2) and 96% on GPQA Diamond. Parameter count, training compute and knowledge cutoff are all marked unknown.

Why it matters: Output tokens cost five times input tokens, so GPT-6.1 Sol bills are more sensitive to how much the model writes.