Unlock OpenAI’s gpt-oss: Run & Fine-Tune Billion-Parameter Models on Consumer Hardware

The Complete Guide to Running and Fine-Tuning OpenAI’s gpt-oss Models with Unsloth You might wonder: How can I run billion-parameter open-source models efficiently? OpenAI’s newly released gpt-oss series combined with Unsloth’s toolchain enables high-performance inference and fine-tuning on consumer hardware. What Are gpt-oss Models? In August 2025, OpenAI open-sourced two breakthrough language models: gpt-oss-120b and gpt-oss-20b. Both models feature: Apache 2.0 license for commercial use 128k context window for long-form reasoning State-of-the-art performance in reasoning, tool use, and agentic tasks Key Model Specifications Model Parameters Performance Benchmark Core Strengths gpt-oss-20b 20 billion Matches o3-mini Tool calling, chain-of-thought reasoning gpt-oss-120b 120 …