Artificial intelligence · July 2026

Kimi K3

The largest open-weight model yet, at 2.8 trillion parameters.

Moonshot AI's Kimi K3 has 2.8 trillion parameters and a 1M-token context. It ranked first in Arena's frontend coding board with 1,679, ahead of Claude Fable 5.

See it in the living tree Wikipedia Source

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 1

Kimi K2 open MoE 2025

Related measurements

The dashed line marks when it first worked.

Best AI score on GPQA Diamond Latest: 95.8 % correct (2026) Source: Epoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv); Anthropic: Claude 3 public launch (March 4, 2024)

Training compute of notable AI models Source: Epoch AI, Notable AI Models (CC BY 4.0)