The high-speed serving variant of Kimi K3.1 Pro — the same weights, with officially claimed **2-3x** output speed for more responsive interactions. Pricing is double the standard version: **$4.00** input / **$20.00** output per million tokens, with cached input at $0.20 and cache writes at $4.00 (5 min) / $8.00 (1 h). Context and capability figures match K3.1 Pro (2.8T total / 104B active, 1M context, native multimodality, Terminal-Bench 4.0 at 65.7%). Live now alongside the standard build as kimi-k3.1-pro-highspeed; weights are promised by Nov 4, so the site logs it under the RESTRICTED convention with zero on-site runs.
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