FLUX.2 Klein 4B API
About
Process massive datasets with FLUX.2 Klein 4B, featuring an expansive 128K context window for long-document analysis. This model delivers cost-effective pricing at $1.00/1M input and $1.00/1M output tokens, open weights architecture. Access FLUX.2 Klein 4B via the NEAR AI Cloud API with up to 128K output tokens.
Capabilities
Input Modalities
text
Output Modalities
image
Reasoning
No
Structured Output
No
Tool Use
No
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
128K
Tokens
Input Limit
128K
Tokens
Max Output
128K
Tokens
Pricing
Standard (per 1M tokens)
Input
$1.00
Output
$1.00
Frequently Asked Questions
FLUX.2 Klein 4B by NEAR AI Cloud costs $1.00 per 1M input tokens and $1.00 per 1M output tokens.
Model Details
ID
black-forest-labs/FLUX.2-klein-4B
Provider
NEAR AI CloudFamily
flux
Release Date
Jan 14, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NEARAI_API_KEY
API Base URL
https://cloud-api.near.ai/v1