Kimi K2 Instruct API
About
Process massive datasets with Kimi K2 Instruct, featuring an expansive 128K context window for long-document analysis. This model delivers cost-effective pricing at $1.00/1M input and $3.00/1M output tokens, native tool calling support, open weights architecture. Access Kimi K2 Instruct via the Fireworks AI API with up to 16K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
No
Structured Output
No
Tool Use
Yes
WeightsOpen
Limits
Context Window
128K
Tokens
Input Limit
128K
Tokens
Max Output
16K
Tokens
Pricing
Standard (per 1M tokens)
Input
$1.00
Output
$3.00
Frequently Asked Questions
Kimi K2 Instruct by Fireworks AI costs $1.00 per 1M input tokens and $3.00 per 1M output tokens.
Model Details
ID
accounts/fireworks/models/kimi-k2-instruct
Provider
Fireworks AIFamily
kimi
Release Date
Jul 11, 2025
Knowledge Cutoff
Oct 1, 2024
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
FIREWORKS_API_KEY
API Base URL
https://api.fireworks.ai/inference/v1/