Introducing Rax 4.5: Efficient 2B Language Model with Sub-50ms Latency
Today we're excited to announce Rax 4.5, our state-of-the-art 2B parameter language model built for building agentic systems, CLI tools, smart chatbots, and process automation with sub-50ms latency.
We are thrilled to launch Rax 4.5—the latest iteration of our flagship language model designed from the ground up for high-throughput, low-latency AI applications.
In modern software architectures, response latency is critical. Rax 4.5 achieves sub-50ms latency for initial token generation, enabling seamless real-time interactions across CLI tools, developer agents, and process automation pipelines.
Key Capabilities of Rax 4.5:
1. Sub-50ms First Token Latency: Native optimization for high-concurrency API environments.
2. Agentic Task Execution: Native support for function calling, structured JSON output, and multi-step tool use.
3. 262K Extended Context Window: Seamlessly ingest large code repositories, log files, and API docs without quality degradation.
4. Native Developer SDKs: Out-of-the-box support for Python, JavaScript/TypeScript, and Flutter SDKs.
Integrating Rax 4.5 into your existing infrastructure takes just a few lines of code using our OpenAI-compatible endpoint format. Explore our documentation to start building today.
Ready to Build with Sub-50ms Latency AI?
Get started with Rax AI today. Free API key, native SDKs for Python, JS, and Flutter, and enterprise support.