Kimi K3.1 Pro is a distinct SKU from Kimi K3. OpenRouter dates it 23 October 2026. The endpoint CompareLLM selected is the author's moonshotai/highspeed route, not a claim about every Kimi price.
On 28 October that route listed $4 input and $20 output per million tokens, cache reads $0.20, and context 1,048,576 tokens. Median throughput was 49 tokens per second and median time to first token 4.74 seconds. The endpoint reports quantization mxfp4 and accepts text, image and video.
Artificial Analysis scores Kimi K3.1 Pro 46 on Intelligence Index v5.0. Claude Opus 5.5 scores 58. Kimi K3 itself no longer has a v5.0 page we could read, so its older v4.3 estimate is not used to rank it against this SKU.
Open weights were described in Moonshot's launch material as forthcoming. This entry does not mark the weights downloadable, because the served endpoint does not prove that the files are public.
