OpenRouter model
Black Forest Labs: FLUX.2 Klein 4B
FLUX.2 [klein] 4B is the fastest and most cost-effective model in the FLUX.2 family, optimized for high-throughput use cases while maintaining excellent image quality. Pricing is based on the output...
- Provider
- OpenRouter
- Availability
- Available
- Model ID
- black-forest-labs/flux.2-klein-4b
- Snapshot
- 2026-08-28
Black Forest Labs: FLUX.2 Klein 4B model overview
Black Forest Labs: FLUX.2 Klein 4B is listed in the public Swarm catalog through OpenRouter. This page summarizes the verified catalog fields used by Swarm without claiming real-time access for every provider account.
- Provider
- OpenRouter
- Family
- OpenRouter
- Context window
- 41K tokens
- Thinking support
- Not supported
- Availability status
- Available
- Catalog ID
- openrouter/black-forest-labs/flux.2-klein-4b
Public catalog snapshot. Catalog availability is not a real-time provider status or an access guarantee.