Unverified50% confidenceFactExact time
258k 是 Codex 中实际可用的有效上下文上限，约为 272k 的 95%，到达此处时系统会自动触发本地或远程压缩
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/19/2026
First Seen
Valid until: 10/17/2026
Sources
Related Claims
Unverified标准蓝牙SBC编解码码率上限约328kbps68% similarVerified以LLaMA-3 70B（80层、64头、每头128维）为例，单个token的KV Cache约占2.6MB（FP16精度），32K上下文的KV Cache总量约达83GB65% similarUnverifiedRTX 5090上Qwen3.6 27B模型预填充速度从174提升到253 token/s，显存占用约18GB64% similarUnverifiedRTX 5090上Qwen3.6 35B-A3B推理速度达220 token/s，显存占用约23GB63% similarUnverified混元3的上下文窗口为256K，最大输出约8K63% similar
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