Kimi K3 Flex API
About
Build advanced reasoning agents with Kimi K3 Flex, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $1.95/1M input and $9.75/1M output tokens, native tool calling support, open weights architecture. Access Kimi K3 Flex via the Neuralwatt API with up to 1.0M output tokens.
Capabilities
Input Modalities
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Output Modalities
text
Reasoning
Yes
Structured Output
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
1.0M
Tokens
Pricing
Standard (per 1M tokens)
Input
$1.95
Output
$9.75
Caching (per 1M tokens)
Read
$0.20
Frequently Asked Questions
Kimi K3 Flex by Neuralwatt costs $1.95 per 1M input tokens and $9.75 per 1M output tokens. Cached reads cost $0.20 per 1M tokens.
Model Details
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NEURALWATT_API_KEY
API Base URL
https://api.neuralwatt.com/v1