Moonshot’s Kimi K3 is reported to target trillion-scale open weights

What is being reported

Moonshot’s upcoming Kimi K3 is being described as a multimodal open-weight model with 2.8 trillion parameters. Reporting characterizes it as China’s largest open model, placing it at the trillion-parameter frontier for open-weight releases.

Company benchmarks reportedly place Kimi K3 near GPT-5.6 Sol and Fable 5, and ahead of Opus 4.8 and GLM 5.2. The model’s full weights are slated for July 27.

Why it matters

If the reported scale and performance hold up, Kimi K3 would be a notable signal in the competition around large open-weight models. The related research frames this as a US-versus-China contest at trillion scale, where releases may serve as foundations for fine-tuning rather than as the single most powerful system.

The report also says Kimi K3 will carry notably higher pricing than its predecessor. That suggests the pricing advantage associated with open-weight options may be narrowing, making direct evaluation more important for teams weighing open models against frontier systems.

The important limit

The weights have not yet been released, and the performance comparisons are company-reported. The record assigns medium confidence and notes that the two core source items come from the same publication, so the reported benchmark position should not be treated as independently established.