DevForth Lab Chat is a free demo for evaluating self-hosted language models that can be used in production to avoid vendor lock-in, shadow AI, and external data exposure.

You can compare models such as OpenAI GPT OSS 20B and 120B, DeepSeek R1 70B, Qwen3 32B and more, in a live chat environment using a RAG-powered knowledge base. You can also see input and output token usage, latency, throughput and generation delays.