Together AI Launches Kimi K3 API, Leads Key Inference Benchmarks

togethercompute · x · 2026-08-06

Together AI has launched the API for Moonshot AI's Kimi K3 model. Kimi K3 is the first open-source model in the 3-trillion-parameter class, featuring 2.8T total parameters with a sparse MoE architecture that activates 16B per token. It supports native vision and a 1-million-token context window.

According to benchmarks by Moonshot, Together AI ranks #1 or ties for #1 on 3 out of 4 major benchmarks (OCRBench, MMMU Pro Vision, and DeepSWE). Together AI emphasized that as open models like Kimi K3 achieve frontier-class quality, serving them with high-performance infrastructure becomes essential.

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