Kimi K2 Thinking API
About
Build advanced reasoning agents with Kimi K2 Thinking, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.60/1M input and $2.50/1M output tokens, native tool calling support, open weights architecture. Access Kimi K2 Thinking via the Amazon Bedrock API with up to 16K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsOpen
Limits
Context Window
262K
Tokens
Input Limit
262K
Tokens
Max Output
16K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.60
Output
$2.50
Frequently Asked Questions
Kimi K2 Thinking by Amazon Bedrock costs $0.60 per 1M input tokens and $2.50 per 1M output tokens.
Model Details
ID
moonshot.kimi-k2-thinking
Provider
Amazon BedrockFamily
kimi-thinking
Release Date
Nov 6, 2025
Knowledge Cutoff
Aug 1, 2024
API Integration
NPM Package
@ai-sdk/amazon-bedrock
Environment Variables
AWS_ACCESS_KEY_ID
AWS_SECRET_ACCESS_KEY
AWS_REGION
AWS_BEARER_TOKEN_BEDROCK