Kimi K3
Moonshot AI's 2.7-trillion-parameter flagship, released in July 2026 as the largest open-weight model published to date and the first Chinese model widely treated as competitive with the top US frontier systems. It runs an always-on reasoning mode Moonshot calls "thinking mode", handles a 1M-token context window, and understands images natively. Two variants shipped: K3 Max for chat and agent work, K3 Swarm Max for large-scale parallel processing.
Kimi K3 is a frontier AI model from Moonshot AI. It costs $3.000 per million input tokens and $15.000 per million output tokens (blended $6.600/M), with a 1,049,000-token context window.
- Largest open-weight model released to date (2.7T parameters)
- Always-on "thinking mode" reasoning
- 1M-token context
- Native visual understanding
- Strong competitive coding performance
- Frontier-class reasoning without US-vendor lock-in
- Self-hosted deployments where weights matter
- Agentic coding
- Long-context analysis
Benchmarks
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See all 5 →Frequently asked questions
How much does Kimi K3 cost?
Kimi K3 costs $3.000 per million input tokens and $15.000 per million output tokens, for a blended reference rate of $6.600 per million tokens.
What is Kimi K3's context window?
Kimi K3 supports up to 1,049,000 tokens of context in a single request.
What is Kimi K3 best for?
Kimi K3 is well suited to Largest open-weight model released to date (2.7T parameters), Always-on "thinking mode" reasoning and 1M-token context.
Who makes Kimi K3?
Kimi K3 is developed and served by Moonshot AI. It was released in Jul 2026.