Reka Flash 3
Open Weights
Reka AI
Reka AI's open-weight 21B general-purpose reasoning model (March 2025), designed for low-latency chat, coding, and function calling with a 128K context window. Released with publicly available weights under Apache 2.0, it is competitive with larger models for its size.
Strengths
- Open-weight 21B general-purpose reasoning model under Apache 2.0
- Low-latency chat, coding, and function calling
- 128K-token context window
- Competitive with larger models for its size
- Runs on a single high-end GPU
Caveats
- 21B ceiling below frontier models on the hardest tasks
- Text-only in this release
- Smaller ecosystem than the largest open models
- Vendor
- Reka AI
- Context Window
- 131,072 tokens
- License
- Apache-2.0
- Release Date
- 2025-03-11
- Modalities
- text
Capabilities
Vision
Audio
Video
Tool Use
Resources
Pricing
Open weights under Apache 2.0 - free to download and self-host; 21B runs on a single high-end GPU. Also served via the Reka API.