Microsoft is testing Kimi K3 inside Copilot, with claims of up to 60% lower inference cost

SumitGup · x · 2026-07-21

Microsoft is reportedly in the process of adding Kimi K3 to Azure and testing it inside Copilot for features that currently run on OpenAI and Anthropic models.

The report says Microsoft engineers are evaluating whether Kimi K3 can power flagship Copilot features.
A source cited in the image says the company has already tested other open-source models, including older DeepSeek and Kimi models.
The appeal is cost: the post claims Kimi K3 could cut inference spend by up to 60% per token.
If Microsoft later self-hosts the open-source model, the cost could fall even further.

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Microsoft is testing Kimi K3 inside Copilot, with claims of up to 60% lower inference cost

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