Kimi K3 Review

Moonshot's 2.8T-param open frontier model

At a glance

Category: Text & Copy. Pricing: free with paid upgrades available.

Moonshot AI's most capable model (July 2026): a 2.8-trillion-parameter model built on Kimi Delta Attention and Attention Residuals, with native vision and a 1-million-token context window. The world's first open 3T-class model, tuned for long-horizon coding, knowledge work, and reasoning, with open weights on Hugging Face.

Strengths

• Open 2.8T frontier model
• 1M-token context
• Native vision

Weaknesses

• Trails top proprietary models
• Enormous compute to self-host

Best for

• Long-horizon coding
• Large-repo agentic work
• Deep research

Use cases

• Long-horizon coding
• Large-repo agentic work
• Deep research

What is Kimi K3?

Kimi K3 is a text & copy tool. Moonshot's 2.8T-param open frontier model.

How much does Kimi K3 cost?

Kimi K3 is free with paid upgrades available. Pricing can change, always check the vendor's site for the latest plans before signing up.

Is Kimi K3 free?

Kimi K3 offers a free tier with basic features. To unlock the full feature set you'll need a paid plan.

What can I use Kimi K3 for?

Common use cases include Long-horizon coding, Large-repo agentic work, and Deep research.

What is Kimi K3 best at?

Reviewers single out Open 2.8T frontier model; 1M-token context; Native vision.