Kimi k1.5
Reasoning
Moonshot's reasoning Kimi. RL-trained chain-of-thought competitive with o1 on math benchmarks; long-context strength is the Kimi signature.
Kimi k1.5 is a reasoning AI model from Moonshot AI. It costs $2.500 per million input tokens and $10.000 per million output tokens (blended $4.750/M), with a 128,000-token context window.
INPUT
$2.500/M
per million input tokens
OUTPUT
$10.000/M
per million output tokens
CONTEXT
128,000
tokens
What it is good at
- Reasoning + long context
- Strong math
- Visible thinking
- Aggressive Chinese pricing
Typical use cases
- Reasoning agents
- Long-document STEM analysis
Benchmarks
vs. best public score
Hand-curated from each provider's published reports and public leaderboards. Methodology varies across sources, treat as directional rather than authoritative.
More from Moonshot AI
See all 5 →Frequently asked questions
How much does Kimi k1.5 cost?
Kimi k1.5 costs $2.500 per million input tokens and $10.000 per million output tokens, for a blended reference rate of $4.750 per million tokens.
What is Kimi k1.5's context window?
Kimi k1.5 supports up to 128,000 tokens of context in a single request.
What is Kimi k1.5 best for?
Kimi k1.5 is well suited to Reasoning + long context, Strong math and Visible thinking.
Who makes Kimi k1.5?
Kimi k1.5 is developed and served by Moonshot AI. It was released in Jan 2025.